organization · Reporting owner

New Mountain Investments III, LLC

Disclosed activity across 1 company

Tapewire entity: 145444
SEC CIK: 0001515175

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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 (1)

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

Avantor, Inc.

Report date November 10, 2020 · Filed November 10, 2020

Jointly reported with New Mountain Partners III LP, New Mountain Capital, L.L.C., New Mountain Capital Group, L.P., NM Holdings GP, L.L.C., KLINSKY STEVEN B

Section 16 reporting ended · disclosed 2020-11-10. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee Footnote	28,000,000	Reported balance After 2020-11-10 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2020-11-10 · Sale · Disposed 36,016,093 · Balance 28,000,000 F1: This amount represents the $25.25 public offering price per share of common stock of the Issuer ("Common Stock"), less the underwriting discount of $0.441875 per share of Common Stock. F2: These securities are directly held by New Mountain Partners III, L.P. The general partner of New Mountain Partners III, L.P. is New Mountain Investments III, L.L.C. and the manager of New Mountain Partners III, L.P. is New Mountain Capital, L.L.C. Steven B. Klinsky is the managing member of New Mountain Investments III, L.L.C. The managing member of New Mountain Capital, L.L.C. is New Mountain Capital Group, L.P. The general partner of New Mountain Capital Group, L.P. is NM Holdings GP, L.L.C. Steven B. Klinsky is the managing member of NM Holdings GP, L.L.C. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Filing footnotes · ownership attribution and instrument terms

F1: This amount represents the $25.25 public offering price per share of common stock of the Issuer ("Common Stock"), less the underwriting discount of $0.441875 per share of Common Stock.

F2: These securities are directly held by New Mountain Partners III, L.P. The general partner of New Mountain Partners III, L.P. is New Mountain Investments III, L.L.C. and the manager of New Mountain Partners III, L.P. is New Mountain Capital, L.L.C. Steven B. Klinsky is the managing member of New Mountain Investments III, L.L.C. The managing member of New Mountain Capital, L.L.C. is New Mountain Capital Group, L.P. The general partner of New Mountain Capital Group, L.P. is NM Holdings GP, L.L.C. Steven B. Klinsky is the managing member of NM Holdings GP, L.L.C. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

Transaction history

JSON API

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 date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
November 10, 2020 Filed Nov 10, 2020 21:24 UTC	Avantor, Inc. AVTR · Entity 3546	SaleCommon Stock	36,016,093	$24.81	$893,490,836.75	Disclosure SEC source: 0000899243-20-030762 · doc4.xml · nonDerivative · entry 1 New Mountain Investments III, LLC · CIK 0001515175 · 10% owner New Mountain Partners III LP · CIK 0001403510 · 10% owner New Mountain Capital, L.L.C. · CIK 0001407718 · 10% owner New Mountain Capital Group, L.P. · CIK 0001777024 · 10% owner NM Holdings GP, L.L.C. · CIK 0001776766 · 10% owner KLINSKY STEVEN B · CIK 0001018327 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 28,000,000 F1 · price: This amount represents the $25.25 public offering price per share of common stock of the Issuer ("Common Stock"), less the underwriting discount of $0.441875 per share of Common Stock. F2 · ownership.nature: These securities are directly held by New Mountain Partners III, L.P. The general partner of New Mountain Partners III, L.P. is New Mountain Investments III, L.L.C. and the manager of New Mountain Partners III, L.P. is New Mountain Capital, L.L.C. Steven B. Klinsky is the managing member of New Mountain Investments III, L.L.C. The managing member of New Mountain Capital, L.L.C. is New Mountain Capital Group, L.P. The general partner of New Mountain Capital Group, L.P. is NM Holdings GP, L.L.C. Steven B. Klinsky is the managing member of NM Holdings GP, L.L.C. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein. Read SEC document
August 21, 2020 Filed Aug 25, 2020 17:08 UTC	Avantor, Inc. AVTR · Entity 3546	SaleCommon Stock	25,575,472	$19.51	$498,887,944.57	Disclosure SEC source: 0000899243-20-023373 · doc4.xml · nonDerivative · entry 1 New Mountain Investments III, LLC · CIK 0001515175 · 10% owner New Mountain Partners III LP · CIK 0001403510 · 10% owner New Mountain Capital, L.L.C. · CIK 0001407718 · 10% owner New Mountain Capital Group, L.P. · CIK 0001777024 · 10% owner NM Holdings GP, L.L.C. · CIK 0001776766 · 10% owner KLINSKY STEVEN B · CIK 0001018327 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 64,016,093 F1 · price: This amount represents the $19.5065 sale price per share of the Common Stock of the Issuer received by the Reporting Persons in connection with a secondary block trade which closed on August 21, 2020. F2 · ownership.nature: These securities are directly held by New Mountain Partners III, L.P. The general partner of New Mountain Partners III, L.P. is New Mountain Investments III, L.L.C. and the manager of New Mountain Partners III, L.P. is New Mountain Capital, L.L.C. Steven B. Klinsky is the managing member of New Mountain Investments III, L.L.C. The managing member of New Mountain Capital, L.L.C. is New Mountain Capital Group, L.P. The general partner of New Mountain Capital Group, L.P. is NM Holdings GP, L.L.C. Steven B. Klinsky is the managing member of NM Holdings GP, L.L.C. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein. Read SEC document
May 26, 2020 Filed May 28, 2020 18:01 UTC	Avantor, Inc. AVTR · Entity 3546	SaleCommon Stock	20,886,424	$15.90	$332,192,307.79	Disclosure SEC source: 0000899243-20-014436 · doc4.xml · nonDerivative · entry 1 New Mountain Investments III, LLC · CIK 0001515175 · 10% owner New Mountain Partners III LP · CIK 0001403510 · 10% owner New Mountain Capital, L.L.C. · CIK 0001407718 · 10% owner New Mountain Capital Group, L.P. · CIK 0001777024 · 10% owner NM Holdings GP, L.L.C. · CIK 0001776766 · 10% owner KLINSKY STEVEN B · CIK 0001018327 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 89,591,565 F1 · price: This amount represents the $16.25 sale price per share of the Common Stock of the Issuer, less the underwriting discount of $0.3453125 per share. F2 · ownership.nature: These securities are directly held by New Mountain Partners III, L.P. The general partner of New Mountain Partners III, L.P. is New Mountain Investments III, L.L.C. and the manager of New Mountain Partners III, L.P. is New Mountain Capital, L.L.C. Steven B. Klinsky is the managing member of New Mountain Investments III, L.L.C. The managing member of New Mountain Capital, L.L.C. is New Mountain Capital Group, L.P. The general partner of New Mountain Capital Group, L.P. is NM Holdings GP, L.L.C. Steven B. Klinsky is the managing member of NM Holdings GP, L.L.C. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein. Read SEC document
May 21, 2019 Filed May 23, 2019 19:31 UTC	Avantor, Inc. AVTR · Entity 3546	SaleCommon Stock	100	$14.00	$1,400.00	Disclosure SEC source: 0000899243-19-014609 · doc4.xml · nonDerivative · entry 1 New Mountain Investments III, LLC · CIK 0001515175 · 10% owner New Mountain Partners III LP · CIK 0001403510 · 10% owner New Mountain Capital, L.L.C. · CIK 0001407718 · 10% owner New Mountain Capital Group, L.P. · CIK 0001777024 · 10% owner NM Holdings GP, L.L.C. · CIK 0001776766 · 10% owner KLINSKY STEVEN B · CIK 0001018327 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 110,477,989 F1 · ownership.nature: These securities are directly held by New Mountain Partners III, L.P. The general partner of New Mountain Partners III, L.P. is New Mountain Investments III, L.L.C. and the manager of New Mountain Partners III, L.P. is New Mountain Capital, L.L.C. Steven B. Klinsky is the managing member of New Mountain Investments III, L.L.C. The managing member of New Mountain Capital, L.L.C. is New Mountain Capital Group, L.P. The general partner of New Mountain Capital Group, L.P. is NM Holdings GP, L.L.C. Steven B. Klinsky is the managing member of NM Holdings GP, L.L.C. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein. Read SEC document

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