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organization · Reporting owner

CCMP Capital, LP

Disclosed activity across 5 companies

Tapewire entity
113399
SEC CIK
0001372939

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Reported relationships

Latest disclosed role at each company.

No relationships currently tracked through insider filings.

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

No balances currently tracked through insider filings.

Past disclosures · reporting ended (5)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Ecovyst Inc.

Report date March 07, 2023 · Filed March 07, 2023

Jointly reported with Quartz Co-Invest, L.P., CCMP Co-Invest III A GP, LLC

Section 16 reporting ended · disclosed 2023-03-07. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy CCMP Capital Investors III, L.P.0 Reported balance After 2023-03-07 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2023-03-07 · Sale · Disposed 5,446,572 · Balance 0

F1: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectBy CCMP Capital Investors III (Employee), L.P.0 Reported balance After 2023-03-07 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2023-03-07 · Sale · Disposed 552,064 · Balance 0

F1: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectCCMP Capital Investors III (AV-7), L.P.0 Reported balance After 2023-03-07 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2023-03-07 · Sale · Disposed 1,660,544 · Balance 0

F1: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectCCMP Capital Investors III (AV-8), L.P.0 Reported balance After 2023-03-07 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2023-03-07 · Sale · Disposed 93,947 · Balance 0

F1: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectCCMP Capital Investors III (AV-9), L.P.0 Reported balance After 2023-03-07 transaction · row 5 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 5 · 2023-03-07 · Sale · Disposed 1,878,125 · Balance 0

F1: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectCCMP Capital Investors III (AV-10), L.P.0 Reported balance After 2023-03-07 transaction · row 6 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 6 · 2023-03-07 · Sale · Disposed 123,059 · Balance 0

F1: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectQuartz Co-Invest L.P.0 Reported balance After 2023-03-07 transaction · row 7 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 7 · 2023-03-07 · Sale · Disposed 1,736,133 · Balance 0

F2: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of Quartz Co-Invest, L.P. ("Quartz" and, together with the CCMP Capital Funds, the "CCMP Investors").

F3: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Filing footnotes · ownership attribution and instrument terms

F1: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of Quartz Co-Invest, L.P. ("Quartz" and, together with the CCMP Capital Funds, the "CCMP Investors").

F3: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Section 16 reporting ended · disclosed 2023-05-12. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy CCMP Capital Investors III, L.P.13,557,066 Last balance in matching sequence After 2023-05-12 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2023-05-10 · Sale · Disposed 12,789,809 · Balance 15,475,537

F1: Shares sold by the reporting person were part of an underwritten secondary offering (the "Offering") of 21,000,000 shares of the Issuer's common stock which closed on May 10, 2023.

F3: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

Row 3 · 2023-05-12 · Sale · Disposed 1,918,471 · Balance 13,557,066

F2: Shares sold by the reporting person were part of the underwriter's complete exercise of the option to purchase an additional 3,150,000 shares of the Issuer's common stock in connection with the Offering.

F3: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

Common StockSEC Table I · non-derivativeIndirectBy CCMP Capital Investors III (Employee), L.P.836,843 Last balance in matching sequence After 2023-05-12 transaction · row 4 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 2 · 2023-05-10 · Sale · Disposed 789,484 · Balance 955,266

F1: Shares sold by the reporting person were part of an underwritten secondary offering (the "Offering") of 21,000,000 shares of the Issuer's common stock which closed on May 10, 2023.

F3: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

Row 4 · 2023-05-12 · Sale · Disposed 118,423 · Balance 836,843

F2: Shares sold by the reporting person were part of the underwriter's complete exercise of the option to purchase an additional 3,150,000 shares of the Issuer's common stock in connection with the Offering.

F3: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

Filing footnotes · ownership attribution and instrument terms

F1: Shares sold by the reporting person were part of an underwritten secondary offering (the "Offering") of 21,000,000 shares of the Issuer's common stock which closed on May 10, 2023.

F2: Shares sold by the reporting person were part of the underwriter's complete exercise of the option to purchase an additional 3,150,000 shares of the Issuer's common stock in connection with the Offering.

F3: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

Section 16 reporting ended · disclosed 2023-05-17. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy CCMP Capital Investors III, L.P.0 Reported balance After 2023-05-15 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2023-05-15 · Sale · Disposed 16,263,437 · Balance 0

F1: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of CCMP Co-Invest III A, L.P. ("CCMP Co-Invest"). CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors") and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors and CCMP Co-Invest, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hillman Solutions Corp. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hillman Solutions Corp. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectBy CCMP Capital Investors III (Employee), L.P.0 Reported balance After 2023-05-15 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2023-05-15 · Sale · Disposed 975,677 · Balance 0

F1: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of CCMP Co-Invest III A, L.P. ("CCMP Co-Invest"). CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors") and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors and CCMP Co-Invest, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hillman Solutions Corp. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hillman Solutions Corp. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectBy CCMP Co-Invest III A, L.P.0 Reported balance After 2023-05-15 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2023-05-15 · Sale · Disposed 5,215,886 · Balance 0

F1: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of CCMP Co-Invest III A, L.P. ("CCMP Co-Invest"). CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors") and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors and CCMP Co-Invest, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hillman Solutions Corp. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hillman Solutions Corp. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Filing footnotes · ownership attribution and instrument terms

F1: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of CCMP Co-Invest III A, L.P. ("CCMP Co-Invest"). CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors") and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors and CCMP Co-Invest, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hillman Solutions Corp. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hillman Solutions Corp. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Section 16 reporting ended · disclosed 2017-11-21. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.01 per share ("Common Stock")SEC Table I · non-derivativeIndirectBy CCMP Capital Investors II, L.P.0 Reported balance After 2017-11-21 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2017-11-21 · Sale · Disposed 9,683,401 · Balance 0

F1: CCMP Capital Associates, L.P is the general partner of each of CCMP Capital Investors II, L.P. and CCMP Capital Investors (Cayman) II, L.P. (together with CCMP Capital Investors II, L.P., the "CCMP Capital Funds"). The general partner of CCMP Capital Associates, L.P. is CCMP Capital Associates GP, LLC. CCMP Capital Associates GP, LLC is wholly-owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. As a result, each of CCMP Capital Associates, L.P., CCMP Capital Associates GP, LLC, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds.

F2: Footnote 1 Continued: Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Common StockSEC Table I · non-derivativeIndirectBy CCMP Capital Investors (Cayman) II, L.P.0 Reported balance After 2017-11-21 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2017-11-21 · Sale · Disposed 1,290,692 · Balance 0

F1: CCMP Capital Associates, L.P is the general partner of each of CCMP Capital Investors II, L.P. and CCMP Capital Investors (Cayman) II, L.P. (together with CCMP Capital Investors II, L.P., the "CCMP Capital Funds"). The general partner of CCMP Capital Associates, L.P. is CCMP Capital Associates GP, LLC. CCMP Capital Associates GP, LLC is wholly-owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. As a result, each of CCMP Capital Associates, L.P., CCMP Capital Associates GP, LLC, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds.

F2: Footnote 1 Continued: Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Filing footnotes · ownership attribution and instrument terms

F1: CCMP Capital Associates, L.P is the general partner of each of CCMP Capital Investors II, L.P. and CCMP Capital Investors (Cayman) II, L.P. (together with CCMP Capital Investors II, L.P., the "CCMP Capital Funds"). The general partner of CCMP Capital Associates, L.P. is CCMP Capital Associates GP, LLC. CCMP Capital Associates GP, LLC is wholly-owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. As a result, each of CCMP Capital Associates, L.P., CCMP Capital Associates GP, LLC, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds.

F2: Footnote 1 Continued: Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Section 16 reporting ended · disclosed 2016-09-13. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.001 per share ("Common Stock")SEC Table I · non-derivativeDirect0 Reported balance After 2016-09-12 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2016-09-12 · Sale · Disposed 13,725,798 · Balance 0

F6: The shares of Common Stock were sold by the Reporting Persons in a registered underwritten secondary offering pursuant to an underwriting agreement entered into on September 6, 2016.

F7: Represents public offering price of $26.07 per share.

F1: This Form 4 is being filed by (i) CCMP Capital Investors II, L.P. ("CCMP Capital Investors"), (ii) CCMP Capital Investors (Cayman) II, L.P. ("CCMP Cayman" and together with CCMP Capital Investors, the "CCMP Capital Funds"), (iii) CCMP Capital Associates, L.P. ("CCMP Capital Associates"), the general partner of the CCMP Capital Funds, (iv) CCMP Capital Associates GP, LLC ("CCMP Capital Associates GP"), the general partner of CCMP Capital Associates, (v) CCMP Capital, LP ("CCMP Capital"), the owner of CCMP Capital Associates GP, and (vi) CCMP Capital GP, LLC ("CCMP Capital GP"), the general partner of CCMP Capital (CCMP Capital GP and CCMP Capital, together with the CCMP Capital Funds, CCMP Capital Associates and CCMP Capital Associates GP, the "Reporting Persons"). The amount of securities indicated in the first row of Table I reflects the aggregate amount of shares beneficially owned by the CCMP Capital Funds. See footnotes (4) and (5).

F2: Each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital and CCMP Capital GP may be deemed, pursuant to Rule 13d-3 under the Securities Exchange Act of 1934 (the "Exchange Act"), to beneficially own the Common Stock of Ollie's Bargain Outlet Holdings, Inc. (the "Issuer") reported herein held by the CCMP Capital Funds. The actual pro rata portion of beneficial ownership of any such shares held by the CCMP Capital Funds that may be deemed attributable to CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital and CCMP Capital GP is not readily determinable because it is subject to several variables, including the internal rate of return within the CCMP Capital Funds.

F3: The Reporting Persons disclaim beneficial ownership of the securities to the extent it exceeds their pecuniary interest therein and the inclusion of the shares in this report shall not be deemed to be an admission of beneficial ownership of the reported shares for the purposes of Section 16 of the Exchange Act or otherwise. The amount shown represents the beneficial ownership of the Issuer's Common Stock held by the Reporting Persons as a group. Information with respect to each Reporting Person is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

Common StockSEC Table I · non-derivativeDirect0 Reported balance After 2016-09-12 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2016-09-12 · Sale · Disposed 12,111,471 · Balance 0

F6: The shares of Common Stock were sold by the Reporting Persons in a registered underwritten secondary offering pursuant to an underwriting agreement entered into on September 6, 2016.

F7: Represents public offering price of $26.07 per share.

F1: This Form 4 is being filed by (i) CCMP Capital Investors II, L.P. ("CCMP Capital Investors"), (ii) CCMP Capital Investors (Cayman) II, L.P. ("CCMP Cayman" and together with CCMP Capital Investors, the "CCMP Capital Funds"), (iii) CCMP Capital Associates, L.P. ("CCMP Capital Associates"), the general partner of the CCMP Capital Funds, (iv) CCMP Capital Associates GP, LLC ("CCMP Capital Associates GP"), the general partner of CCMP Capital Associates, (v) CCMP Capital, LP ("CCMP Capital"), the owner of CCMP Capital Associates GP, and (vi) CCMP Capital GP, LLC ("CCMP Capital GP"), the general partner of CCMP Capital (CCMP Capital GP and CCMP Capital, together with the CCMP Capital Funds, CCMP Capital Associates and CCMP Capital Associates GP, the "Reporting Persons"). The amount of securities indicated in the first row of Table I reflects the aggregate amount of shares beneficially owned by the CCMP Capital Funds. See footnotes (4) and (5).

F2: Each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital and CCMP Capital GP may be deemed, pursuant to Rule 13d-3 under the Securities Exchange Act of 1934 (the "Exchange Act"), to beneficially own the Common Stock of Ollie's Bargain Outlet Holdings, Inc. (the "Issuer") reported herein held by the CCMP Capital Funds. The actual pro rata portion of beneficial ownership of any such shares held by the CCMP Capital Funds that may be deemed attributable to CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital and CCMP Capital GP is not readily determinable because it is subject to several variables, including the internal rate of return within the CCMP Capital Funds.

F3: The Reporting Persons disclaim beneficial ownership of the securities to the extent it exceeds their pecuniary interest therein and the inclusion of the shares in this report shall not be deemed to be an admission of beneficial ownership of the reported shares for the purposes of Section 16 of the Exchange Act or otherwise. The amount shown represents the beneficial ownership of the Issuer's Common Stock held by the Reporting Persons as a group. Information with respect to each Reporting Person is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F4: The amount shown represents the beneficial ownership of shares of the Issuer's Common Stock owned by CCMP Capital Investors II, L.P.

Common StockSEC Table I · non-derivativeDirect0 Reported balance After 2016-09-12 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2016-09-12 · Sale · Disposed 1,614,327 · Balance 0

F6: The shares of Common Stock were sold by the Reporting Persons in a registered underwritten secondary offering pursuant to an underwriting agreement entered into on September 6, 2016.

F7: Represents public offering price of $26.07 per share.

F1: This Form 4 is being filed by (i) CCMP Capital Investors II, L.P. ("CCMP Capital Investors"), (ii) CCMP Capital Investors (Cayman) II, L.P. ("CCMP Cayman" and together with CCMP Capital Investors, the "CCMP Capital Funds"), (iii) CCMP Capital Associates, L.P. ("CCMP Capital Associates"), the general partner of the CCMP Capital Funds, (iv) CCMP Capital Associates GP, LLC ("CCMP Capital Associates GP"), the general partner of CCMP Capital Associates, (v) CCMP Capital, LP ("CCMP Capital"), the owner of CCMP Capital Associates GP, and (vi) CCMP Capital GP, LLC ("CCMP Capital GP"), the general partner of CCMP Capital (CCMP Capital GP and CCMP Capital, together with the CCMP Capital Funds, CCMP Capital Associates and CCMP Capital Associates GP, the "Reporting Persons"). The amount of securities indicated in the first row of Table I reflects the aggregate amount of shares beneficially owned by the CCMP Capital Funds. See footnotes (4) and (5).

F2: Each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital and CCMP Capital GP may be deemed, pursuant to Rule 13d-3 under the Securities Exchange Act of 1934 (the "Exchange Act"), to beneficially own the Common Stock of Ollie's Bargain Outlet Holdings, Inc. (the "Issuer") reported herein held by the CCMP Capital Funds. The actual pro rata portion of beneficial ownership of any such shares held by the CCMP Capital Funds that may be deemed attributable to CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital and CCMP Capital GP is not readily determinable because it is subject to several variables, including the internal rate of return within the CCMP Capital Funds.

F3: The Reporting Persons disclaim beneficial ownership of the securities to the extent it exceeds their pecuniary interest therein and the inclusion of the shares in this report shall not be deemed to be an admission of beneficial ownership of the reported shares for the purposes of Section 16 of the Exchange Act or otherwise. The amount shown represents the beneficial ownership of the Issuer's Common Stock held by the Reporting Persons as a group. Information with respect to each Reporting Person is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F5: The amount shown represents the beneficial ownership of shares of the Issuer's Common Stock owned by CCMP Capital Investors (Cayman) II, L.P.

Filing footnotes · ownership attribution and instrument terms

F1: This Form 4 is being filed by (i) CCMP Capital Investors II, L.P. ("CCMP Capital Investors"), (ii) CCMP Capital Investors (Cayman) II, L.P. ("CCMP Cayman" and together with CCMP Capital Investors, the "CCMP Capital Funds"), (iii) CCMP Capital Associates, L.P. ("CCMP Capital Associates"), the general partner of the CCMP Capital Funds, (iv) CCMP Capital Associates GP, LLC ("CCMP Capital Associates GP"), the general partner of CCMP Capital Associates, (v) CCMP Capital, LP ("CCMP Capital"), the owner of CCMP Capital Associates GP, and (vi) CCMP Capital GP, LLC ("CCMP Capital GP"), the general partner of CCMP Capital (CCMP Capital GP and CCMP Capital, together with the CCMP Capital Funds, CCMP Capital Associates and CCMP Capital Associates GP, the "Reporting Persons"). The amount of securities indicated in the first row of Table I reflects the aggregate amount of shares beneficially owned by the CCMP Capital Funds. See footnotes (4) and (5).

F2: Each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital and CCMP Capital GP may be deemed, pursuant to Rule 13d-3 under the Securities Exchange Act of 1934 (the "Exchange Act"), to beneficially own the Common Stock of Ollie's Bargain Outlet Holdings, Inc. (the "Issuer") reported herein held by the CCMP Capital Funds. The actual pro rata portion of beneficial ownership of any such shares held by the CCMP Capital Funds that may be deemed attributable to CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital and CCMP Capital GP is not readily determinable because it is subject to several variables, including the internal rate of return within the CCMP Capital Funds.

F3: The Reporting Persons disclaim beneficial ownership of the securities to the extent it exceeds their pecuniary interest therein and the inclusion of the shares in this report shall not be deemed to be an admission of beneficial ownership of the reported shares for the purposes of Section 16 of the Exchange Act or otherwise. The amount shown represents the beneficial ownership of the Issuer's Common Stock held by the Reporting Persons as a group. Information with respect to each Reporting Person is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.

F4: The amount shown represents the beneficial ownership of shares of the Issuer's Common Stock owned by CCMP Capital Investors II, L.P.

F5: The amount shown represents the beneficial ownership of shares of the Issuer's Common Stock owned by CCMP Capital Investors (Cayman) II, L.P.

F6: The shares of Common Stock were sold by the Reporting Persons in a registered underwritten secondary offering pursuant to an underwriting agreement entered into on September 6, 2016.

F7: Represents public offering price of $26.07 per share.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
November 23, 2021 Filed Nov 23, 2021 16:30 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 789,459 $9.12 $7,199,866.08
Disclosure

SEC source: 0000899243-21-045783 · doc4.xml · nonDerivative · entry 7

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Quartz Co-Invest L.P.

Disclosed balance after: 7,154,160

F2 · ownership.nature: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of Quartz Co-Invest, L.P. ("Quartz" and, together with the CCMP Capital Funds, the "CCMP Investors").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:30 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 55,958 $9.12 $510,336.96
Disclosure

SEC source: 0000899243-21-045783 · doc4.xml · nonDerivative · entry 6

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-10), L.P.

Disclosed balance after: 507,093

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:30 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 854,026 $9.12 $7,788,717.12
Disclosure

SEC source: 0000899243-21-045783 · doc4.xml · nonDerivative · entry 5

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-9), L.P.

Disclosed balance after: 7,739,276

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:30 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 42,720 $9.12 $389,606.40
Disclosure

SEC source: 0000899243-21-045783 · doc4.xml · nonDerivative · entry 4

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-8), L.P.

Disclosed balance after: 387,129

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:30 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 755,087 $9.12 $6,886,393.44
Disclosure

SEC source: 0000899243-21-045783 · doc4.xml · nonDerivative · entry 3

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-7), L.P.

Disclosed balance after: 6,842,680

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:30 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 251,036 $9.12 $2,289,448.32
Disclosure

SEC source: 0000899243-21-045783 · doc4.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 2,274,919

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:30 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 2,476,680 $9.12 $22,587,321.60
Disclosure

SEC source: 0000899243-21-045783 · doc4.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 22,443,932

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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November 23, 2021 Filed Nov 23, 2021 16:35 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 789,459 $9.12 $7,199,866.08
Disclosure

SEC source: 0000899243-21-045787 · doc4.xml · nonDerivative · entry 7

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Quartz Co-Invest L.P.

Disclosed balance after: 7,154,160

F2 · ownership.nature: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of Quartz Co-Invest, L.P. ("Quartz" and, together with the CCMP Capital Funds, the "CCMP Investors").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:35 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 55,958 $9.12 $510,336.96
Disclosure

SEC source: 0000899243-21-045787 · doc4.xml · nonDerivative · entry 6

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-10), L.P.

Disclosed balance after: 507,093

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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November 23, 2021 Filed Nov 23, 2021 16:35 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 854,026 $9.12 $7,788,717.12
Disclosure

SEC source: 0000899243-21-045787 · doc4.xml · nonDerivative · entry 5

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-9), L.P.

Disclosed balance after: 7,739,276

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:35 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 42,720 $9.12 $389,606.40
Disclosure

SEC source: 0000899243-21-045787 · doc4.xml · nonDerivative · entry 4

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-8), L.P.

Disclosed balance after: 387,129

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:35 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 755,087 $9.12 $6,886,393.44
Disclosure

SEC source: 0000899243-21-045787 · doc4.xml · nonDerivative · entry 3

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-7), L.P.

Disclosed balance after: 6,842,680

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:35 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 251,036 $9.12 $2,289,448.32
Disclosure

SEC source: 0000899243-21-045787 · doc4.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 2,274,919

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
November 23, 2021 Filed Nov 23, 2021 16:35 UTC Ecovyst Inc. ECVT · Entity 4897 SaleCommon Stock 2,476,680 $9.12 $22,587,321.60
Disclosure

SEC source: 0000899243-21-045787 · doc4.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 22,443,932

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Ecovyst Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Ecovyst Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:16 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 185,029 $13.44 $2,486,789.76
Disclosure

SEC source: 0000899243-21-018348 · doc4.xml · nonDerivative · entry 7

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Quartz Co-Invest L.P.

Disclosed balance after: 7,943,619

F2 · ownership.nature: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of Quartz Co-Invest, L.P. ("Quartz" and, together with the CCMP Capital Funds, the "CCMP Investors").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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May 05, 2021 Filed May 5, 2021 16:16 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 13,115 $13.44 $176,265.60
Disclosure

SEC source: 0000899243-21-018348 · doc4.xml · nonDerivative · entry 6

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-10), L.P.

Disclosed balance after: 563,051

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:16 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 200,162 $13.44 $2,690,177.28
Disclosure

SEC source: 0000899243-21-018348 · doc4.xml · nonDerivative · entry 5

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-9), L.P.

Disclosed balance after: 8,593,302

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:16 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 10,012 $13.44 $134,561.28
Disclosure

SEC source: 0000899243-21-018348 · doc4.xml · nonDerivative · entry 4

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-8), L.P.

Disclosed balance after: 429,849

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:16 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 176,974 $13.44 $2,378,530.56
Disclosure

SEC source: 0000899243-21-018348 · doc4.xml · nonDerivative · entry 3

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-7), L.P.

Disclosed balance after: 7,597,767

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:16 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 58,838 $13.44 $790,782.72
Disclosure

SEC source: 0000899243-21-018348 · doc4.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 2,525,955

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:16 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 580,472 $13.44 $7,801,543.68
Disclosure

SEC source: 0000899243-21-018348 · doc4.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 24,920,612

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 185,029 $13.44 $2,486,789.76
Disclosure

SEC source: 0000899243-21-018351 · doc4.xml · nonDerivative · entry 7

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Quartz Co-Invest L.P.

Disclosed balance after: 7,943,619

F2 · ownership.nature: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of Quartz Co-Invest, L.P. ("Quartz" and, together with the CCMP Capital Funds, the "CCMP Investors").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 13,115 $13.44 $176,265.60
Disclosure

SEC source: 0000899243-21-018351 · doc4.xml · nonDerivative · entry 6

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-10), L.P.

Disclosed balance after: 563,051

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 200,162 $13.44 $2,690,177.28
Disclosure

SEC source: 0000899243-21-018351 · doc4.xml · nonDerivative · entry 5

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-9), L.P.

Disclosed balance after: 8,593,302

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 10,012 $13.44 $134,561.28
Disclosure

SEC source: 0000899243-21-018351 · doc4.xml · nonDerivative · entry 4

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-8), L.P.

Disclosed balance after: 429,849

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 176,974 $13.44 $2,378,530.56
Disclosure

SEC source: 0000899243-21-018351 · doc4.xml · nonDerivative · entry 3

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-7), L.P.

Disclosed balance after: 7,597,767

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 05, 2021 Filed May 5, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 58,838 $13.44 $790,782.72
Disclosure

SEC source: 0000899243-21-018351 · doc4.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 2,525,955

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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May 05, 2021 Filed May 5, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 580,472 $13.44 $7,801,543.68
Disclosure

SEC source: 0000899243-21-018351 · doc4.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 24,920,612

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:22 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 1,233,530 $13.44 $16,578,643.20
Disclosure

SEC source: 0000899243-21-017747 · doc4.xml · nonDerivative · entry 7

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Quartz Co-Invest L.P.

Disclosed balance after: 8,128,648

F2 · ownership.nature: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of Quartz Co-Invest, L.P. ("Quartz" and, together with the CCMP Capital Funds, the "CCMP Investors").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:22 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 87,434 $13.44 $1,175,112.96
Disclosure

SEC source: 0000899243-21-017747 · doc4.xml · nonDerivative · entry 6

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-10), L.P.

Disclosed balance after: 576,166

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:22 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 1,334,416 $13.44 $17,934,551.04
Disclosure

SEC source: 0000899243-21-017747 · doc4.xml · nonDerivative · entry 5

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-9), L.P.

Disclosed balance after: 8,793,464

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:22 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 66,749 $13.44 $897,106.56
Disclosure

SEC source: 0000899243-21-017747 · doc4.xml · nonDerivative · entry 4

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-8), L.P.

Disclosed balance after: 439,861

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:22 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 1,179,824 $13.44 $15,856,834.56
Disclosure

SEC source: 0000899243-21-017747 · doc4.xml · nonDerivative · entry 3

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-7), L.P.

Disclosed balance after: 7,774,741

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:22 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 392,244 $13.44 $5,271,759.36
Disclosure

SEC source: 0000899243-21-017747 · doc4.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 2,584,793

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:22 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 3,869,813 $13.44 $52,010,286.72
Disclosure

SEC source: 0000899243-21-017747 · doc4.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

CCMP Co-Invest III A GP, LLC · CIK 0001718021 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 25,501,084

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 1,233,530 $13.44 $16,578,643.20
Disclosure

SEC source: 0000899243-21-017746 · doc4.xml · nonDerivative · entry 7

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Quartz Co-Invest L.P.

Disclosed balance after: 8,128,648

F2 · ownership.nature: CCMP Co-Invest III A GP, LLC ("CCMP Co-Invest GP") is the general partner of Quartz Co-Invest, L.P. ("Quartz" and, together with the CCMP Capital Funds, the "CCMP Investors").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 87,434 $13.44 $1,175,112.96
Disclosure

SEC source: 0000899243-21-017746 · doc4.xml · nonDerivative · entry 6

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-10), L.P.

Disclosed balance after: 576,166

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 1,334,416 $13.44 $17,934,551.04
Disclosure

SEC source: 0000899243-21-017746 · doc4.xml · nonDerivative · entry 5

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-9), L.P.

Disclosed balance after: 8,793,464

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Read SEC document
May 03, 2021 Filed May 3, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 66,749 $13.44 $897,106.56
Disclosure

SEC source: 0000899243-21-017746 · doc4.xml · nonDerivative · entry 4

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-8), L.P.

Disclosed balance after: 439,861

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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May 03, 2021 Filed May 3, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 1,179,824 $13.44 $15,856,834.56
Disclosure

SEC source: 0000899243-21-017746 · doc4.xml · nonDerivative · entry 3

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · CCMP Capital Investors III (AV-7), L.P.

Disclosed balance after: 7,774,741

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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May 03, 2021 Filed May 3, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 392,244 $13.44 $5,271,759.36
Disclosure

SEC source: 0000899243-21-017746 · doc4.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 2,584,793

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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May 03, 2021 Filed May 3, 2021 16:20 UTC Ecovyst Inc. PQG · Entity 4897 SaleCommon Stock 3,869,813 $13.44 $52,010,286.72
Disclosure

SEC source: 0000899243-21-017746 · doc4.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Investors III (AV-7), L.P. · CIK 0001718031 · 10% owner

CCMP Capital Investors III (AV-8), L.P. · CIK 0001718033 · 10% owner

CCMP Capital Investors III (AV-9), L.P. · CIK 0001718030 · 10% owner

CCMP Capital Investors III (AV-10), L.P. · CIK 0001718032 · 10% owner

Quartz Co-Invest, L.P. · CIK 0001620042 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 25,501,084

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), CCMP Capital Investors III (Employee), L.P. ("CCMP Employee"), CCMP Capital Investors III (AV-7), L.P. ("CCMP AV-7"), CCMP Capital Investors III (AV-8), L.P. ("CCMP AV-8"), CCMP Capital Investors III (AV-9), L.P. ("CCMP AV-9") and CCMP Capital Investors III (AV-10), L.P. ("CCMP AV-10" and, together with CCMP Capital Investors, CCMP Employee, CCMP AV-7, CCMP AV-8 and CCMP AV-9, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F3 · ownership.nature: CCMP Capital Associates GP and CCMP Co-Invest GP are each wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Co-Invest GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of PQ Group Holdings Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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April 13, 2021 Filed Apr 13, 2021 18:37 UTC Hayward Holdings, Inc. HAYW · Entity 768 SaleCommon Stock 65,118 $16.07 $1,046,120.67
Disclosure

SEC source: 0001104659-21-049875 · tm2112870-1_4seq1.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 4,159,137

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F3 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors have entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the issuer and certain affiliates of MSD Partners, L.P. ("MSD") and Alberta Investment Management Corporation ("AIMCo") pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them, and AIMCo has also agreed to certain restrictions on the transfer of its shares of Common Stock. By virtue of the Stockholders' Agreement, the CCMP Investors, MSD and AIMCo may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F4 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD and AIMCo except as reported as beneficially owned by the reporting persons in this Form 4.

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April 13, 2021 Filed Apr 13, 2021 18:37 UTC Hayward Holdings, Inc. HAYW · Entity 768 SaleCommon Stock 1,054,926 $16.07 $16,947,386.19
Disclosure

SEC source: 0001104659-21-049875 · tm2112870-1_4seq1.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 67,378,948

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F3 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors have entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the issuer and certain affiliates of MSD Partners, L.P. ("MSD") and Alberta Investment Management Corporation ("AIMCo") pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them, and AIMCo has also agreed to certain restrictions on the transfer of its shares of Common Stock. By virtue of the Stockholders' Agreement, the CCMP Investors, MSD and AIMCo may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F4 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD and AIMCo except as reported as beneficially owned by the reporting persons in this Form 4.

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March 16, 2021 Filed Mar 16, 2021 18:13 UTC Hayward Holdings, Inc. HAYW · Entity 768 SaleCommon Stock 418,053 $16.07 $6,716,021.45
Disclosure

SEC source: 0001104659-21-037265 · tm219858-1_4seq1.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 4,224,255

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F3 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Capital Funds have entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the issuer and certain affiliates of MSD Partners, L.P. ("MSD") and Alberta Investment Management Corporation ("AIMCo") pursuant to which the CCMP Capital Funds and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them, and AIMCo has also agreed to certain restrictions on the transfer of its shares of Common Stock. By virtue of the Stockholders' Agreement, the CCMP Capital Funds, MSD and AIMCo may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F4 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD and AIMCo except as reported as beneficially owned by the reporting persons in this Form 4.

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March 16, 2021 Filed Mar 16, 2021 18:13 UTC Hayward Holdings, Inc. HAYW · Entity 768 SaleCommon Stock 6,772,545 $16.07 $108,800,935.43
Disclosure

SEC source: 0001104659-21-037265 · tm219858-1_4seq1.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 68,433,874

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Capital Funds"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F3 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Capital Funds have entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the issuer and certain affiliates of MSD Partners, L.P. ("MSD") and Alberta Investment Management Corporation ("AIMCo") pursuant to which the CCMP Capital Funds and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them, and AIMCo has also agreed to certain restrictions on the transfer of its shares of Common Stock. By virtue of the Stockholders' Agreement, the CCMP Capital Funds, MSD and AIMCo may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F4 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD and AIMCo except as reported as beneficially owned by the reporting persons in this Form 4.

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November 21, 2017 Filed Nov 21, 2017 17:29 UTC Milacron Holdings Corp. MCRN · Entity 153592 SaleCommon Stock 1,290,692 $16.00 $20,651,072.00
Disclosure

SEC source: 0000904454-17-000688 · edgar.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors II, L.P. · CIK 0001372942 · 10% owner

CCMP Capital Investors (Cayman) II, L.P. · CIK 0001373028 · 10% owner

CCMP Capital Associates, L.P. · CIK 0001372941 · 10% owner

CCMP Capital Associates GP, LLC · CIK 0001372940 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors (Cayman) II, L.P.

Disclosed balance after: 0

F1 · ownership.nature: CCMP Capital Associates, L.P is the general partner of each of CCMP Capital Investors II, L.P. and CCMP Capital Investors (Cayman) II, L.P. (together with CCMP Capital Investors II, L.P., the "CCMP Capital Funds"). The general partner of CCMP Capital Associates, L.P. is CCMP Capital Associates GP, LLC. CCMP Capital Associates GP, LLC is wholly-owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. As a result, each of CCMP Capital Associates, L.P., CCMP Capital Associates GP, LLC, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds.

F2 · ownership.nature: Footnote 1 Continued: Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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November 21, 2017 Filed Nov 21, 2017 17:29 UTC Milacron Holdings Corp. MCRN · Entity 153592 SaleCommon Stock, par value $0.01 per share ("Common Stock") 9,683,401 $16.00 $154,934,416.00
Disclosure

SEC source: 0000904454-17-000688 · edgar.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors II, L.P. · CIK 0001372942 · 10% owner

CCMP Capital Investors (Cayman) II, L.P. · CIK 0001373028 · 10% owner

CCMP Capital Associates, L.P. · CIK 0001372941 · 10% owner

CCMP Capital Associates GP, LLC · CIK 0001372940 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors II, L.P.

Disclosed balance after: 0

F1 · ownership.nature: CCMP Capital Associates, L.P is the general partner of each of CCMP Capital Investors II, L.P. and CCMP Capital Investors (Cayman) II, L.P. (together with CCMP Capital Investors II, L.P., the "CCMP Capital Funds"). The general partner of CCMP Capital Associates, L.P. is CCMP Capital Associates GP, LLC. CCMP Capital Associates GP, LLC is wholly-owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. As a result, each of CCMP Capital Associates, L.P., CCMP Capital Associates GP, LLC, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds.

F2 · ownership.nature: Footnote 1 Continued: Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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August 15, 2017 Filed Aug 15, 2017 16:18 UTC Milacron Holdings Corp. MCRN · Entity 153592 SaleCommon Stock 887,402 $16.71 $14,828,487.42
Disclosure

SEC source: 0000904454-17-000569 · edgar.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors II, L.P. · CIK 0001372942 · 10% owner

CCMP Capital Investors (Cayman) II, L.P. · CIK 0001373028 · 10% owner

CCMP Capital Associates, L.P. · CIK 0001372941 · 10% owner

CCMP Capital Associates GP, LLC · CIK 0001372940 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors (Cayman) II, L.P.

Disclosed balance after: 1,290,692

F1 · ownership.nature: 1. CCMP Capital Associates, L.P is the general partner of each of CCMP Capital Investors II, L.P. and CCMP Capital Investors (Cayman) II, L.P. (together with CCMP Capital Investors II, L.P., the "CCMP Capital Funds"). The general partner of CCMP Capital Associates, L.P. is CCMP Capital Associates GP, LLC. CCMP Capital Associates GP, LLC is wholly-owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. As a result, each of CCMP Capital Associates, L.P., CCMP Capital Associates GP, LLC, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. (Continued in Footnote 2)

F2 · ownership.nature: Footnote 1 Continued: Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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August 15, 2017 Filed Aug 15, 2017 16:18 UTC Milacron Holdings Corp. MCRN · Entity 153592 SaleCommon Stock, par value $0.01 per share ("Common Stock") 6,657,722 $16.71 $111,250,534.62
Disclosure

SEC source: 0000904454-17-000569 · edgar.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors II, L.P. · CIK 0001372942 · 10% owner

CCMP Capital Investors (Cayman) II, L.P. · CIK 0001373028 · 10% owner

CCMP Capital Associates, L.P. · CIK 0001372941 · 10% owner

CCMP Capital Associates GP, LLC · CIK 0001372940 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors II, L.P.

Disclosed balance after: 9,683,401

F1 · ownership.nature: 1. CCMP Capital Associates, L.P is the general partner of each of CCMP Capital Investors II, L.P. and CCMP Capital Investors (Cayman) II, L.P. (together with CCMP Capital Investors II, L.P., the "CCMP Capital Funds"). The general partner of CCMP Capital Associates, L.P. is CCMP Capital Associates GP, LLC. CCMP Capital Associates GP, LLC is wholly-owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. As a result, each of CCMP Capital Associates, L.P., CCMP Capital Associates GP, LLC, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to the shares of common stock of Milacron Holdings Corp. held by the CCMP Capital Funds. (Continued in Footnote 2)

F2 · ownership.nature: Footnote 1 Continued: Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.