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person · Reporting owner

KLINSKY STEVEN B

Disclosed activity across 10 companies

Tapewire entity
61359
SEC CIK
0001018327

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Bellerophon Therapeutics, Inc.BLPH · Entity 10898210% ownerMarch 18, 2021March 22, 2021
New Mountain Finance CorpNMFC · Entity 5211Director · 10% ownerMarch 10, 2026March 12, 2026
New Mountain Guardian IV Income Fund, L.L.C.NONE · Entity 6878510% ownerMay 02, 2024May 06, 2024
New Mountain Private Credit FundNONE · Entity 8320710% ownerDecember 17, 2024February 14, 2025
Signify Health, Inc.SGFY · Entity 114996Director · 10% ownerMay 19, 2022May 23, 2022
VWR CorpVWR · Entity 17161910% ownerMay 04, 2017May 15, 2017

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.

Bellerophon Therapeutics, Inc.

Report date March 18, 2021 · Filed March 22, 2021

Jointly reported with New Mountain Investments II, LLC, New Mountain Capital, L.L.C.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect609,231 Reported balance After 2021-03-18 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2021-03-18 · Sale · Disposed 400,000 · Balance 609,231

F1: Consists of 43,496 shares held by Allegheny New Mountain Partners, L.P., 10,049 shares held by New Mountain Affiliated Investors II, L.P., 481,714 shares held by New Mountain Partners II (AIV-A), L.P. and 73,972 shares held by New Mountain Partners II (AIV-B), L.P. (such holders collectively, the "New Mountain Entities"). New Mountain Investments II, L.L.C. is the general partner of each of Allegheny New Mountain Partners, L.P., New Mountain Affiliated Investors II, L.P., New Mountain Partners II (AIV-A), L.P. and New Mountain Partners II (AIV-B), L.P. (collectively, the "New Mountain Funds"). (Continued in footnote 2.)

F2: New Mountain Capital, L.L.C. is the manager of each of the New Mountain Funds and a wholly owned subsidiary of New Mountain Capital Group, L.P. (formerly known as New Mountain Capital Group, LLC). NM Holdings GP, L.L.C. is the general partner of New Mountain Capital Group, L.P. Mr. Steven B. Klinsky is the managing member of each of New Mountain Investments II, L.L.C. and NM Holdings GP, L.L.C., the chief executive officer of New Mountain Capital, L.L.C., and the managing partner of New Mountain Capital Group, L.P. Each of the Reporting Persons disclaims beneficial ownership of these securities, except to the extent of its pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Consists of 43,496 shares held by Allegheny New Mountain Partners, L.P., 10,049 shares held by New Mountain Affiliated Investors II, L.P., 481,714 shares held by New Mountain Partners II (AIV-A), L.P. and 73,972 shares held by New Mountain Partners II (AIV-B), L.P. (such holders collectively, the "New Mountain Entities"). New Mountain Investments II, L.L.C. is the general partner of each of Allegheny New Mountain Partners, L.P., New Mountain Affiliated Investors II, L.P., New Mountain Partners II (AIV-A), L.P. and New Mountain Partners II (AIV-B), L.P. (collectively, the "New Mountain Funds"). (Continued in footnote 2.)

F2: New Mountain Capital, L.L.C. is the manager of each of the New Mountain Funds and a wholly owned subsidiary of New Mountain Capital Group, L.P. (formerly known as New Mountain Capital Group, LLC). NM Holdings GP, L.L.C. is the general partner of New Mountain Capital Group, L.P. Mr. Steven B. Klinsky is the managing member of each of New Mountain Investments II, L.L.C. and NM Holdings GP, L.L.C., the chief executive officer of New Mountain Capital, L.L.C., and the managing partner of New Mountain Capital Group, L.P. Each of the Reporting Persons disclaims beneficial ownership of these securities, except to the extent of its pecuniary interest therein.

New Mountain Finance Corp

Report date March 10, 2026 · Filed March 12, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Note1,373,030 Reported balance After 2026-03-10 transaction · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · 2026-03-10 · Purchase · Acquired 74,586 · Balance 1,373,030

F2: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note1,465,110 Reported balance After 2026-03-11 transaction · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · 2026-03-11 · Purchase · Acquired 92,080 · Balance 1,465,110

F2: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note5,186,696 Reported balance After 2026-03-10 transaction · row 9 Holding and transaction disclosures are not merged.
1 source row

Row 9 · 2026-03-10 · Purchase · Acquired 149,172 · Balance 5,186,696

F8: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note5,370,858 Reported balance After 2026-03-11 transaction · row 10 Holding and transaction disclosures are not merged.
1 source row

Row 10 · 2026-03-11 · Purchase · Acquired 184,162 · Balance 5,370,858

F8: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note1,020,267 Reported balance Holding disclosure · report date 2026-03-10 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 1,020,267

F3: The Steven B. Klinsky Non-GST Exempt Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note11,191 Reported balance Holding disclosure · report date 2026-03-10 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 11,191

F4: Includes (i) 16 shares held directly and (ii) 11,175 shares held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note11,175 Reported balance Holding disclosure · report date 2026-03-10 · row 6 Holding and transaction disclosures are not merged.
1 source row

Row 6 · Balance 11,175

F5: Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note11,175 Reported balance Holding disclosure · report date 2026-03-10 · row 7 Holding and transaction disclosures are not merged.
1 source row

Row 7 · Balance 11,175

F6: Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note11,175 Reported balance Holding disclosure · report date 2026-03-10 · row 8 Holding and transaction disclosures are not merged.
1 source row

Row 8 · Balance 11,175

F7: Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note3,457,379 Reported balance Holding disclosure · report date 2026-03-10 · row 11 Holding and transaction disclosures are not merged.
1 source row

Row 11 · Balance 3,457,379

F9: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 2") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 2 except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Note855,000 Reported balance Holding disclosure · report date 2026-03-10 · row 12 Holding and transaction disclosures are not merged.
1 source row

Row 12 · Balance 855,000

F10: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 3") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 3 except to the extent of his pecuniary interest therein.

Common StockSEC Table I · non-derivativeDirect116,823.91 Reported balance Holding disclosure · report date 2026-03-10 · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · Balance 116,823.91

F1: Includes shares previously acquired under the New Mountain Finance Corporation dividend reinvestment plan.

Filing footnotes · ownership attribution and instrument terms

F1: Includes shares previously acquired under the New Mountain Finance Corporation dividend reinvestment plan.

F2: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F3: The Steven B. Klinsky Non-GST Exempt Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F4: Includes (i) 16 shares held directly and (ii) 11,175 shares held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F5: Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F6: Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F7: Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

F8: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

F9: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 2") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 2 except to the extent of his pecuniary interest therein.

F10: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 3") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 3 except to the extent of his pecuniary interest therein.

New Mountain Guardian IV Income Fund, L.L.C.

Report date May 02, 2024 · Filed May 06, 2024

Jointly reported with New Mountain Guardian Investments IV Unlevered, L.L.C.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
LLC InterestsSEC Table I · non-derivativeDirect120,250 Reported balance After 2024-05-02 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2024-05-02 · Other · Disposed 1,779,750 · Balance 120,250

F1: New Mountain Guardian Investments IV Unlevered, L.L.C. received residual interests in a rated note vehicle in exchange for the transfer of the 1,779,750 LLC Interests. Such transaction is expected to close on or about May 21, 2024.

F2: Represents securities held by New Mountain Guardian Investments IV Unlevered, L.L.C. Steven B. Klinsky is the managing member of New Mountain Guardian Investments IV Unlevered, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: New Mountain Guardian Investments IV Unlevered, L.L.C. received residual interests in a rated note vehicle in exchange for the transfer of the 1,779,750 LLC Interests. Such transaction is expected to close on or about May 21, 2024.

F2: Represents securities held by New Mountain Guardian Investments IV Unlevered, L.L.C. Steven B. Klinsky is the managing member of New Mountain Guardian Investments IV Unlevered, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

New Mountain Private Credit Fund

Report date December 17, 2024 · Filed February 14, 2025 · Amendment

Amendment: balances below belong to this corrected disclosure, not necessarily a complete replacement of earlier positions.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common shares of ben. interest, par value $0.001 per shareSEC Table I · non-derivativeDirect2,290,651.44 Reported balance After 2024-12-17 transaction · row 1 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 1 · 2024-12-17 · Other · Acquired 2,290,651.44 · Balance 2,290,651.44

F3: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F1: The original Form 4 filed on December 19, 2024 disclosed an estimated number of common shares of beneficial interest, par value $0.001 per share (the "Shares") received based on calculations available as of the date of the filing, and, as a result of such estimation, overstated the number of Shares received by Mr. Klinsky 71,553.888 Shares. This amendment is being filed to correct the number of Shares received by Mr. Klinsky and the amount of securities beneficially owned following the reported transaction based on the final calculation.

Common shares of ben. interest, par value $0.001 per shareSEC Table I · non-derivativeIndirectSee Footnote3,676,696.506 Reported balance After 2024-12-17 transaction · row 2 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 2 · 2024-12-17 · Other · Acquired 3,676,696.506 · Balance 3,676,696.506

F3: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F2: The original Form 4 filed on December 19, 2024 disclosed an estimated number of Shares received based on calculations available as of the date of the filing and, as a result of such estimation, overstated the number of Shares received by New Mountain GP Holdings, L.P. by 114,486.750 Shares. This amendment is being filed to correct the number of Shares received by New Mountain GP Holdings, L.P. and the amount of securities beneficially owned following the reported transaction based on the final calculation.

F4: Represents securities held directly by New Mountain GP Holdings, L.P. NM Holdings GP, L.L.C. is the general partner of New Mountain GP Holdings, L.P. Steven B. Klinsky is the sole member and managing member of NM Holdings GP, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of their/its pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: The original Form 4 filed on December 19, 2024 disclosed an estimated number of common shares of beneficial interest, par value $0.001 per share (the "Shares") received based on calculations available as of the date of the filing, and, as a result of such estimation, overstated the number of Shares received by Mr. Klinsky 71,553.888 Shares. This amendment is being filed to correct the number of Shares received by Mr. Klinsky and the amount of securities beneficially owned following the reported transaction based on the final calculation.

F2: The original Form 4 filed on December 19, 2024 disclosed an estimated number of Shares received based on calculations available as of the date of the filing and, as a result of such estimation, overstated the number of Shares received by New Mountain GP Holdings, L.P. by 114,486.750 Shares. This amendment is being filed to correct the number of Shares received by New Mountain GP Holdings, L.P. and the amount of securities beneficially owned following the reported transaction based on the final calculation.

F3: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F4: Represents securities held directly by New Mountain GP Holdings, L.P. NM Holdings GP, L.L.C. is the general partner of New Mountain GP Holdings, L.P. Steven B. Klinsky is the sole member and managing member of NM Holdings GP, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of their/its pecuniary interest therein.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common StockSEC Table I · non-derivativeIndirectBy New Mountain Directors67,764 Reported balance After 2022-05-19 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2022-05-19 · Grant · Acquired 44,016 · Balance 67,764

F1: Represents a grant of restricted stock units ("RSUs") relating to 14,672 shares of Class A common stock to each of Matthew S. Holt, Albert A. Notini and Kyle B. Peterson (collectively, the "New Mountain Directors"). Each of the New Mountain Directors has assigned all rights, title and interest in the RSUs reported herein to New Mountain Capital, L.L.C. ("NMC").

F2: The RSUs are scheduled to vest on May 19, 2023.

F3: Each of the New Mountain Directors is a member of the Issuer's Board of Directors and a member of New Mountain Investments V, L.L.C. ("NM V").

F7: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Class A Common StockSEC Table I · non-derivativeIndirectBy New Mountain Partners V (AIV-C2), L.P.48,378,865 Reported balance Holding disclosure · report date 2022-05-19 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 48,378,865

F4: NMC may be deemed to have beneficial ownership of the shares of Class A common stock directly held by each of New Mountain Partners V (AIV-C2), L.P. ("AIV-C2") and Remedy Acquisition, L.P. ("Remedy Acquisition").

F5: The general partner of New Mountain Partners V (AIV-C), L.P. ("AIV-C"), AIV-C2 and Remedy Acquisition is NM V and the manager of AIV-C is NMC. Steven B. Klinsky is the managing member of NM V, which has decision-making power over the disposition and voting of shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition. NMC also has voting power over the shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition. Mr. Klinsky, as the managing member of NM V, has voting and investment power over the shares it holds.

F6: The managing member of NMC is New Mountain Capital Group, L.P., whose general partner is NM Holdings GP, L.L.C (whose managing member is Mr. Klinsky). Since (a) NM V has decision-making power over AIV-C, AIV-C2 and Remedy Acquisition and (b) NMC has voting power over the shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition, Mr. Klinsky may be deemed to beneficially own the shares that AIV-C, AIV-C2 and Remedy Acquisition hold of record or may be deemed to beneficially own.

F7: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Class A Common StockSEC Table I · non-derivativeIndirectBy Remedy Acquisition, L.P.48,330,828 Reported balance Holding disclosure · report date 2022-05-19 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 48,330,828

F4: NMC may be deemed to have beneficial ownership of the shares of Class A common stock directly held by each of New Mountain Partners V (AIV-C2), L.P. ("AIV-C2") and Remedy Acquisition, L.P. ("Remedy Acquisition").

F5: The general partner of New Mountain Partners V (AIV-C), L.P. ("AIV-C"), AIV-C2 and Remedy Acquisition is NM V and the manager of AIV-C is NMC. Steven B. Klinsky is the managing member of NM V, which has decision-making power over the disposition and voting of shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition. NMC also has voting power over the shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition. Mr. Klinsky, as the managing member of NM V, has voting and investment power over the shares it holds.

F6: The managing member of NMC is New Mountain Capital Group, L.P., whose general partner is NM Holdings GP, L.L.C (whose managing member is Mr. Klinsky). Since (a) NM V has decision-making power over AIV-C, AIV-C2 and Remedy Acquisition and (b) NMC has voting power over the shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition, Mr. Klinsky may be deemed to beneficially own the shares that AIV-C, AIV-C2 and Remedy Acquisition hold of record or may be deemed to beneficially own.

F7: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Represents a grant of restricted stock units ("RSUs") relating to 14,672 shares of Class A common stock to each of Matthew S. Holt, Albert A. Notini and Kyle B. Peterson (collectively, the "New Mountain Directors"). Each of the New Mountain Directors has assigned all rights, title and interest in the RSUs reported herein to New Mountain Capital, L.L.C. ("NMC").

F2: The RSUs are scheduled to vest on May 19, 2023.

F3: Each of the New Mountain Directors is a member of the Issuer's Board of Directors and a member of New Mountain Investments V, L.L.C. ("NM V").

F4: NMC may be deemed to have beneficial ownership of the shares of Class A common stock directly held by each of New Mountain Partners V (AIV-C2), L.P. ("AIV-C2") and Remedy Acquisition, L.P. ("Remedy Acquisition").

F5: The general partner of New Mountain Partners V (AIV-C), L.P. ("AIV-C"), AIV-C2 and Remedy Acquisition is NM V and the manager of AIV-C is NMC. Steven B. Klinsky is the managing member of NM V, which has decision-making power over the disposition and voting of shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition. NMC also has voting power over the shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition. Mr. Klinsky, as the managing member of NM V, has voting and investment power over the shares it holds.

F6: The managing member of NMC is New Mountain Capital Group, L.P., whose general partner is NM Holdings GP, L.L.C (whose managing member is Mr. Klinsky). Since (a) NM V has decision-making power over AIV-C, AIV-C2 and Remedy Acquisition and (b) NMC has voting power over the shares of portfolio investments of AIV-C, AIV-C2 and Remedy Acquisition, Mr. Klinsky may be deemed to beneficially own the shares that AIV-C, AIV-C2 and Remedy Acquisition hold of record or may be deemed to beneficially own.

F7: Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.01 per shareSEC Table I · non-derivativeIndirectSee Footnotes0 Reported balance Holding disclosure · report date 2017-05-04 · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · Balance 0

F1: As a result of entering into the Voting Agreement between Avantor, Inc. ("Parent"), Vail Acquisition Corp ("Merger Sub") and Varietal Distribution Holdings, LLC ("VDH"), dated as of May 4, 2017 (the "Voting Agreement"), the Reporting Persons may be deemed to beneficially own, pursuant to Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), in excess of 10% of the outstanding common stock, par value $0.01 per share ("Common Stock"), of the Issuer.

F2: Pursuant to the Voting Agreement, subject to certain exceptions, VDH agreed to vote, or cause to be voted, its respective shares of Common Stock (representing approximately 34.7% of the outstanding Common Stock), together with any additional shares of Common Stock acquired by VDH after May 4, 2017 (the "Subject Shares"), in favor of adopting the Agreement and Plan of Merger, dated as of May 4, 2017, among the Issuer, Parent and Merger Sub, the Merger, and the other transactions contemplated thereby at the meeting of the stockholders of the Issuer to be held for that purpose. In addition, VDH granted Parent an irrevocable proxy to vote the Subject Shares in the manner contemplated by the Voting Agreement and agreed not to transfer such shares until the Voting Agreement is terminated. As a result, the Reporting Persons are filing this Form 3. Based on representations given by VDH, as of May 4, 2017, VDH beneficially owned 45,750,000 shares of Common Stock.

F3: Pursuant to Rule 16a-1(a)(4), the Reporting Persons expressly disclaim beneficial ownership of the securities beneficially owned by VDH, and the filing of this Form 3 shall not be deemed an admission of beneficial ownership by the Reporting Persons of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Filing footnotes · ownership attribution and instrument terms

F1: As a result of entering into the Voting Agreement between Avantor, Inc. ("Parent"), Vail Acquisition Corp ("Merger Sub") and Varietal Distribution Holdings, LLC ("VDH"), dated as of May 4, 2017 (the "Voting Agreement"), the Reporting Persons may be deemed to beneficially own, pursuant to Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), in excess of 10% of the outstanding common stock, par value $0.01 per share ("Common Stock"), of the Issuer.

F2: Pursuant to the Voting Agreement, subject to certain exceptions, VDH agreed to vote, or cause to be voted, its respective shares of Common Stock (representing approximately 34.7% of the outstanding Common Stock), together with any additional shares of Common Stock acquired by VDH after May 4, 2017 (the "Subject Shares"), in favor of adopting the Agreement and Plan of Merger, dated as of May 4, 2017, among the Issuer, Parent and Merger Sub, the Merger, and the other transactions contemplated thereby at the meeting of the stockholders of the Issuer to be held for that purpose. In addition, VDH granted Parent an irrevocable proxy to vote the Subject Shares in the manner contemplated by the Voting Agreement and agreed not to transfer such shares until the Voting Agreement is terminated. As a result, the Reporting Persons are filing this Form 3. Based on representations given by VDH, as of May 4, 2017, VDH beneficially owned 45,750,000 shares of Common Stock.

F3: Pursuant to Rule 16a-1(a)(4), the Reporting Persons expressly disclaim beneficial ownership of the securities beneficially owned by VDH, and the filing of this Form 3 shall not be deemed an admission of beneficial ownership by the Reporting Persons of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Past disclosures · reporting ended (4)

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

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

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote28,000,000 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.

New Mountain Guardian III BDC, L.L.C.

Report date December 17, 2024 · Filed December 19, 2024

Jointly reported with New Mountain Guardian Investments III, L.L.C.

Section 16 reporting ended · disclosed 2024-12-19. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
LLC InterestsSEC Table I · non-derivativeDirect0 Reported balance After 2024-12-17 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2024-12-17 · Disposition to issuer · Disposed 28,078,480 · Balance 0

F2: Disposed of pursuant to a merger agreement between Issuer and New Mountain Private Credit Fund ("NEWCRED") in exchange for 8,159,775.49 shares of beneficial interest of NEWCRED.

F1: Represents securities held by New Mountain Guardian Investments III, L.L.C. Steven B. Klinsky is the managing member of New Mountain Guardian Investments III, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Represents securities held by New Mountain Guardian Investments III, L.L.C. Steven B. Klinsky is the managing member of New Mountain Guardian Investments III, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

F2: Disposed of pursuant to a merger agreement between Issuer and New Mountain Private Credit Fund ("NEWCRED") in exchange for 8,159,775.49 shares of beneficial interest of NEWCRED.

New Mountain Guardian IV BDC, L.L.C.

Report date August 28, 2024 · Filed August 30, 2024

Jointly reported with New Mountain Guardian Investments IV, L.L.C.

Section 16 reporting ended · disclosed 2024-08-30. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
LLC InterestsSEC Table I · non-derivativeDirect5,979,875 Reported balance After 2024-08-28 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2024-08-28 · Purchase · Acquired 479,875 · Balance 5,979,875

F1: On August 28, 2024, the Issuer delivered a capital drawdown notice and upon delivery of such notice, New Mountain Guardian Investments IV, L.L.C. became obligated to purchase LLC Interests, which purchase is expected to close on or about September 12, 2024, but in no event later than October 24, 2024.

F2: Represents securities held by New Mountain Guardian Investments IV, L.L.C. Steven B. Klinsky is the managing member of New Mountain Guardian Investments IV, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: On August 28, 2024, the Issuer delivered a capital drawdown notice and upon delivery of such notice, New Mountain Guardian Investments IV, L.L.C. became obligated to purchase LLC Interests, which purchase is expected to close on or about September 12, 2024, but in no event later than October 24, 2024.

F2: Represents securities held by New Mountain Guardian Investments IV, L.L.C. Steven B. Klinsky is the managing member of New Mountain Guardian Investments IV, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

Section 16 reporting ended · disclosed 2024-11-22. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Notes0 Reported balance After 2024-11-19 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2024-11-19 · Other · Disposed 124,910,408 · Balance 0

F1: On November 19, 2024, R1 RCM Inc. completed its merger with Project Raven Merger Sub, Inc. and all shares of common stock beneficially owned by the Reporting Persons were cancelled and converted into the right to receive $14.30 per share in cash.

F2: Held directly by CoyCo 1.

F3: CoyCo GP, L.L.C. ("CoyCo GP") is the general partner of each of CoyCo 1 and CoyCo 2. New Mountain Partners V (AIV-D), L.P. ("AIV-D") is the manager of CoyCo GP. New Mountain Investments V, L.L.C. ("Investments V") has decision-making power over the disposition and voting of securities of portfolio investments of AIV-D. New Mountain Capital, L.L.C. ("New Mountain Capital") also has voting power over the securities of portfolio investments of AIV-D. New Mountain Capital Group, L.P. ("New Mountain Capital Group") is the managing member of New Mountain Capital. NM Holdings GP, L.L.C. ("NM Holdings GP") is the general partner of New Mountain Capital Group. Steven B. Klinsky is the managing member of New Mountain Investments V and managing member of NM Holdings GP.

F4: Because of their relationships, each of Mr. Klinsky, CoyCo GP, AIV-D, New Mountain Investments V, New Mountain Capital, New Mountain Capital Group and NM Holdings GP may be deemed to beneficially own the Common Shares held by CoyCo 1 and CoyCo 2. Each of Mr. Klinsky, CoyCo GP, AIV-D, New Mountain Investments V, New Mountain Capital, New Mountain Capital Group and NM Holdings GP expressly disclaim beneficial ownership over the securities held by CoyCo 1 and CoyCo 2 except to the extent of their pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Notes0 Reported balance After 2024-11-19 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2024-11-19 · Other · Disposed 11,075,180 · Balance 0

F1: On November 19, 2024, R1 RCM Inc. completed its merger with Project Raven Merger Sub, Inc. and all shares of common stock beneficially owned by the Reporting Persons were cancelled and converted into the right to receive $14.30 per share in cash.

F3: CoyCo GP, L.L.C. ("CoyCo GP") is the general partner of each of CoyCo 1 and CoyCo 2. New Mountain Partners V (AIV-D), L.P. ("AIV-D") is the manager of CoyCo GP. New Mountain Investments V, L.L.C. ("Investments V") has decision-making power over the disposition and voting of securities of portfolio investments of AIV-D. New Mountain Capital, L.L.C. ("New Mountain Capital") also has voting power over the securities of portfolio investments of AIV-D. New Mountain Capital Group, L.P. ("New Mountain Capital Group") is the managing member of New Mountain Capital. NM Holdings GP, L.L.C. ("NM Holdings GP") is the general partner of New Mountain Capital Group. Steven B. Klinsky is the managing member of New Mountain Investments V and managing member of NM Holdings GP.

F4: Because of their relationships, each of Mr. Klinsky, CoyCo GP, AIV-D, New Mountain Investments V, New Mountain Capital, New Mountain Capital Group and NM Holdings GP may be deemed to beneficially own the Common Shares held by CoyCo 1 and CoyCo 2. Each of Mr. Klinsky, CoyCo GP, AIV-D, New Mountain Investments V, New Mountain Capital, New Mountain Capital Group and NM Holdings GP expressly disclaim beneficial ownership over the securities held by CoyCo 1 and CoyCo 2 except to the extent of their pecuniary interest therein.

F5: Held directly by CoyCo 2.

Filing footnotes · ownership attribution and instrument terms

F1: On November 19, 2024, R1 RCM Inc. completed its merger with Project Raven Merger Sub, Inc. and all shares of common stock beneficially owned by the Reporting Persons were cancelled and converted into the right to receive $14.30 per share in cash.

F2: Held directly by CoyCo 1.

F3: CoyCo GP, L.L.C. ("CoyCo GP") is the general partner of each of CoyCo 1 and CoyCo 2. New Mountain Partners V (AIV-D), L.P. ("AIV-D") is the manager of CoyCo GP. New Mountain Investments V, L.L.C. ("Investments V") has decision-making power over the disposition and voting of securities of portfolio investments of AIV-D. New Mountain Capital, L.L.C. ("New Mountain Capital") also has voting power over the securities of portfolio investments of AIV-D. New Mountain Capital Group, L.P. ("New Mountain Capital Group") is the managing member of New Mountain Capital. NM Holdings GP, L.L.C. ("NM Holdings GP") is the general partner of New Mountain Capital Group. Steven B. Klinsky is the managing member of New Mountain Investments V and managing member of NM Holdings GP.

F4: Because of their relationships, each of Mr. Klinsky, CoyCo GP, AIV-D, New Mountain Investments V, New Mountain Capital, New Mountain Capital Group and NM Holdings GP may be deemed to beneficially own the Common Shares held by CoyCo 1 and CoyCo 2. Each of Mr. Klinsky, CoyCo GP, AIV-D, New Mountain Investments V, New Mountain Capital, New Mountain Capital Group and NM Holdings GP expressly disclaim beneficial ownership over the securities held by CoyCo 1 and CoyCo 2 except to the extent of their pecuniary interest therein.

F5: Held directly by CoyCo 2.

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
March 11, 2026 Filed Mar 12, 2026 17:23 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 184,162 $8.05 $1,482,504.10
Disclosure

SEC source: 0001580642-26-001781 · ownership.xml · nonDerivative · entry 10

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 5,370,858

F8 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Read SEC document
March 11, 2026 Filed Mar 12, 2026 17:23 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 92,080 $8.05 $741,244.00
Disclosure

SEC source: 0001580642-26-001781 · ownership.xml · nonDerivative · entry 3

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 1,465,110

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
March 10, 2026 Filed Mar 12, 2026 17:23 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 149,172 $8.05 $1,200,834.60
Disclosure

SEC source: 0001580642-26-001781 · ownership.xml · nonDerivative · entry 9

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 5,186,696

F8 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Read SEC document
March 10, 2026 Filed Mar 12, 2026 17:23 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 74,586 $8.05 $600,417.30
Disclosure

SEC source: 0001580642-26-001781 · ownership.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 1,373,030

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
March 05, 2026 Filed Mar 6, 2026 17:03 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 158,582 $8.10 $1,284,514.20
Disclosure

SEC source: 0001580642-26-001605 · ownership.xml · nonDerivative · entry 8

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 5,037,524

F8 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Read SEC document
March 05, 2026 Filed Mar 6, 2026 17:03 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 79,291 $8.10 $642,257.10
Disclosure

SEC source: 0001580642-26-001605 · ownership.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 1,298,444

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
March 04, 2026 Filed Mar 5, 2026 16:42 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 124,604 $8.17 $1,017,653.33
Disclosure

SEC source: 0001580642-26-001523 · ownership.xml · nonDerivative · entry 10

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,878,942

F8 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Read SEC document
March 04, 2026 Filed Mar 5, 2026 16:42 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 62,301 $8.17 $508,818.50
Disclosure

SEC source: 0001580642-26-001523 · ownership.xml · nonDerivative · entry 3

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 1,219,153

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
March 03, 2026 Filed Mar 5, 2026 16:42 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 166,997 $7.94 $1,326,390.37
Disclosure

SEC source: 0001580642-26-001523 · ownership.xml · nonDerivative · entry 9

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,754,338

F8 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Read SEC document
March 03, 2026 Filed Mar 5, 2026 16:42 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 83,498 $7.94 $663,191.21
Disclosure

SEC source: 0001580642-26-001523 · ownership.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 1,156,852

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 16:53 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 124,483 $7.79 $969,125.05
Disclosure

SEC source: 0001580642-26-001367 · ownership.xml · nonDerivative · entry 10

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,587,341

F8 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 16:53 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 62,242 $7.79 $484,566.42
Disclosure

SEC source: 0001580642-26-001367 · ownership.xml · nonDerivative · entry 3

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 1,073,354

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
February 27, 2026 Filed Mar 3, 2026 16:53 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 92,001 $7.69 $707,708.49
Disclosure

SEC source: 0001580642-26-001367 · ownership.xml · nonDerivative · entry 9

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,462,858

F8 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Read SEC document
February 27, 2026 Filed Mar 3, 2026 16:53 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 46,001 $7.69 $353,858.09
Disclosure

SEC source: 0001580642-26-001367 · ownership.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 1,011,112

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
September 16, 2025 Filed Sep 18, 2025 16:30 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 85,352 $9.78 $834,853.52
Disclosure

SEC source: 0001104659-25-091289 · tm2526458-1_4seq1.xml · nonDerivative · entry 8

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,370,857

F8 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

Read SEC document
September 16, 2025 Filed Sep 18, 2025 16:30 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 21,339 $9.78 $208,723.16
Disclosure

SEC source: 0001104659-25-091289 · tm2526458-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 965,111

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
December 17, 2024 Filed Dec 19, 2024 21:04 UTC New Mountain Private Credit Fund NONE · Entity 83207 PurchaseCommon shares of ben. interest, par value $0.001 per share 12,600 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-24-130355 · tm2431374-6_4seq1.xml · nonDerivative · entry 6

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 12,600

F3 · shares: Includes 600 Shares that were received by the Reporting Person for no consideration in connection with such trust's purchase from the Issuer of 12,000 Shares at $25.00 per Share.

F3 · price: Includes 600 Shares that were received by the Reporting Person for no consideration in connection with such trust's purchase from the Issuer of 12,000 Shares at $25.00 per Share.

F4 · ownership.nature: Shares held by a trust established for the benefit of an immediate family member. Mr. Klinsky serves as trustee of the trust and, in such capacity, has investment and voting discretion over shares held by the trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
December 17, 2024 Filed Dec 19, 2024 21:04 UTC New Mountain Private Credit Fund NONE · Entity 83207 PurchaseCommon shares of ben. interest, par value $0.001 per share 12,600 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-24-130355 · tm2431374-6_4seq1.xml · nonDerivative · entry 5

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 12,600

F3 · shares: Includes 600 Shares that were received by the Reporting Person for no consideration in connection with such trust's purchase from the Issuer of 12,000 Shares at $25.00 per Share.

F3 · price: Includes 600 Shares that were received by the Reporting Person for no consideration in connection with such trust's purchase from the Issuer of 12,000 Shares at $25.00 per Share.

F4 · ownership.nature: Shares held by a trust established for the benefit of an immediate family member. Mr. Klinsky serves as trustee of the trust and, in such capacity, has investment and voting discretion over shares held by the trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
December 17, 2024 Filed Dec 19, 2024 21:04 UTC New Mountain Private Credit Fund NONE · Entity 83207 PurchaseCommon shares of ben. interest, par value $0.001 per share 12,600 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-24-130355 · tm2431374-6_4seq1.xml · nonDerivative · entry 4

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 12,600

F3 · shares: Includes 600 Shares that were received by the Reporting Person for no consideration in connection with such trust's purchase from the Issuer of 12,000 Shares at $25.00 per Share.

F3 · price: Includes 600 Shares that were received by the Reporting Person for no consideration in connection with such trust's purchase from the Issuer of 12,000 Shares at $25.00 per Share.

F4 · ownership.nature: Shares held by a trust established for the benefit of an immediate family member. Mr. Klinsky serves as trustee of the trust and, in such capacity, has investment and voting discretion over shares held by the trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
December 17, 2024 Filed Dec 19, 2024 21:04 UTC New Mountain Private Credit Fund NONE · Entity 83207 PurchaseCommon shares of ben. interest, par value $0.001 per share 12,600 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-24-130355 · tm2431374-6_4seq1.xml · nonDerivative · entry 3

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 12,600

F3 · shares: Includes 600 Shares that were received by the Reporting Person for no consideration in connection with such trust's purchase from the Issuer of 12,000 Shares at $25.00 per Share.

F3 · price: Includes 600 Shares that were received by the Reporting Person for no consideration in connection with such trust's purchase from the Issuer of 12,000 Shares at $25.00 per Share.

F4 · ownership.nature: Shares held by a trust established for the benefit of an immediate family member. Mr. Klinsky serves as trustee of the trust and, in such capacity, has investment and voting discretion over shares held by the trust. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
December 17, 2024 Filed Dec 19, 2024 21:04 UTC New Mountain Private Credit Fund NONE · Entity 83207 OtherCommon shares of ben. interest, par value $0.001 per share 3,791,183.256 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-24-130355 · tm2431374-6_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,791,183.256

F1 · kind: Reflects common shares of beneficial interest, par value $0.001 per share (the "Shares") that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F1 · shares: Reflects common shares of beneficial interest, par value $0.001 per share (the "Shares") that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F1 · price: Reflects common shares of beneficial interest, par value $0.001 per share (the "Shares") that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F2 · ownership.nature: Represents securities held directly by New Mountain GP Holdings, L.P. NM Holdings GP, L.L.C. is the general partner of New Mountain GP Holdings, L.P. Steven B. Klinsky is the sole member and managing member of NM Holdings GP, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of their/its pecuniary interest therein.

Read SEC document
December 17, 2024 Filed Dec 19, 2024 21:04 UTC New Mountain Private Credit Fund NONE · Entity 83207 OtherCommon shares of ben. interest, par value $0.001 per share 2,362,205.328 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-24-130355 · tm2431374-6_4seq1.xml · nonDerivative · entry 1

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,362,205.328

F1 · kind: Reflects common shares of beneficial interest, par value $0.001 per share (the "Shares") that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F1 · shares: Reflects common shares of beneficial interest, par value $0.001 per share (the "Shares") that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F1 · price: Reflects common shares of beneficial interest, par value $0.001 per share (the "Shares") that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

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December 17, 2024 Filed Dec 19, 2024 18:21 UTC New Mountain Guardian III BDC, L.L.C. NONE · Entity 84827 Disposition to issuerLLC Interests 28,078,480 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-24-130295 · tm2431374-1_4seq1.xml · nonDerivative · entry 1

New Mountain Guardian Investments III, L.L.C. · CIK 0001788186 · 10% owner

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F2 · price: Disposed of pursuant to a merger agreement between Issuer and New Mountain Private Credit Fund ("NEWCRED") in exchange for 8,159,775.49 shares of beneficial interest of NEWCRED.

F1 · ownership.direct: Represents securities held by New Mountain Guardian Investments III, L.L.C. Steven B. Klinsky is the managing member of New Mountain Guardian Investments III, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein.

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December 17, 2024 Filed Dec 19, 2024 16:21 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 48,187 $11.28 $543,751.75
Disclosure

SEC source: 0001104659-24-130176 · tm2431598-1_4seq1.xml · nonDerivative · entry 5

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,285,505

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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December 17, 2024 Filed Dec 19, 2024 16:21 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 24,093 $11.28 $271,870.23
Disclosure

SEC source: 0001104659-24-130176 · tm2431598-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 943,772

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 17, 2024 Filed Feb 14, 2025 16:33 UTC Amendment New Mountain Private Credit Fund NONE · Entity 83207 OtherCommon shares of ben. interest, par value $0.001 per share 3,676,696.506 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-25-014219 · tm255976-3_4aseq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,676,696.506

F3 · kind: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F2 · shares: The original Form 4 filed on December 19, 2024 disclosed an estimated number of Shares received based on calculations available as of the date of the filing and, as a result of such estimation, overstated the number of Shares received by New Mountain GP Holdings, L.P. by 114,486.750 Shares. This amendment is being filed to correct the number of Shares received by New Mountain GP Holdings, L.P. and the amount of securities beneficially owned following the reported transaction based on the final calculation.

F3 · shares: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F3 · price: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F2 · balance_after: The original Form 4 filed on December 19, 2024 disclosed an estimated number of Shares received based on calculations available as of the date of the filing and, as a result of such estimation, overstated the number of Shares received by New Mountain GP Holdings, L.P. by 114,486.750 Shares. This amendment is being filed to correct the number of Shares received by New Mountain GP Holdings, L.P. and the amount of securities beneficially owned following the reported transaction based on the final calculation.

F3 · balance_after: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F4 · ownership.nature: Represents securities held directly by New Mountain GP Holdings, L.P. NM Holdings GP, L.L.C. is the general partner of New Mountain GP Holdings, L.P. Steven B. Klinsky is the sole member and managing member of NM Holdings GP, L.L.C. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of their/its pecuniary interest therein.

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December 17, 2024 Filed Feb 14, 2025 16:33 UTC Amendment New Mountain Private Credit Fund NONE · Entity 83207 OtherCommon shares of ben. interest, par value $0.001 per share 2,290,651.44 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-25-014219 · tm255976-3_4aseq1.xml · nonDerivative · entry 1

KLINSKY STEVEN B · CIK 0001018327 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,290,651.44

F3 · kind: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F1 · shares: The original Form 4 filed on December 19, 2024 disclosed an estimated number of common shares of beneficial interest, par value $0.001 per share (the "Shares") received based on calculations available as of the date of the filing, and, as a result of such estimation, overstated the number of Shares received by Mr. Klinsky 71,553.888 Shares. This amendment is being filed to correct the number of Shares received by Mr. Klinsky and the amount of securities beneficially owned following the reported transaction based on the final calculation.

F3 · shares: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F3 · price: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

F1 · balance_after: The original Form 4 filed on December 19, 2024 disclosed an estimated number of common shares of beneficial interest, par value $0.001 per share (the "Shares") received based on calculations available as of the date of the filing, and, as a result of such estimation, overstated the number of Shares received by Mr. Klinsky 71,553.888 Shares. This amendment is being filed to correct the number of Shares received by Mr. Klinsky and the amount of securities beneficially owned following the reported transaction based on the final calculation.

F3 · balance_after: Reflects Shares that were issued to New Mountain Guardian Investments III, L.L.C. to be held on behalf of its members in connection with the merger agreement between Issuer and New Mountain Guardian III BDC, L.L.C. ("NMG") and related transactions thereto and distributed pro rata to Reporting Person as a member of NMG effective as of the closing of such transactions. Shares received is an estimate based on calculations available as of the date of filing. The Reporting Person undertakes to amend this Form 4, if necessary, following the final calculation.

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December 16, 2024 Filed Dec 17, 2024 16:38 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 60,967 $11.74 $715,594.07
Disclosure

SEC source: 0001104659-24-129394 · tm2431341-1_4seq1.xml · nonDerivative · entry 7

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,237,318

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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December 16, 2024 Filed Dec 17, 2024 16:38 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 30,484 $11.74 $357,802.90
Disclosure

SEC source: 0001104659-24-129394 · tm2431341-1_4seq1.xml · nonDerivative · entry 3

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 919,679

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 13, 2024 Filed Dec 17, 2024 16:38 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 6,034 $11.74 $70,829.51
Disclosure

SEC source: 0001104659-24-129394 · tm2431341-1_4seq1.xml · nonDerivative · entry 6

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,176,351

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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December 13, 2024 Filed Dec 17, 2024 16:38 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 3,017 $11.74 $35,414.75
Disclosure

SEC source: 0001104659-24-129394 · tm2431341-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 889,195

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 12, 2024 Filed Dec 13, 2024 16:30 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 11,771 $11.74 $138,229.21
Disclosure

SEC source: 0001104659-24-128448 · tm2431050-1_4seq1.xml · nonDerivative · entry 7

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,170,317

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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December 12, 2024 Filed Dec 13, 2024 16:30 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 5.885 $11.74 $69.11
Disclosure

SEC source: 0001104659-24-128448 · tm2431050-1_4seq1.xml · nonDerivative · entry 3

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 886,178

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 11, 2024 Filed Dec 13, 2024 16:30 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 13,213 $11.74 $155,184.04
Disclosure

SEC source: 0001104659-24-128448 · tm2431050-1_4seq1.xml · nonDerivative · entry 6

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,158,546

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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December 11, 2024 Filed Dec 13, 2024 16:30 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 6,607 $11.74 $77,597.89
Disclosure

SEC source: 0001104659-24-128448 · tm2431050-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 880,293

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 06, 2024 Filed Dec 9, 2024 17:32 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 11,596 $11.74 $136,155.59
Disclosure

SEC source: 0001104659-24-126834 · tm2430544-1_4seq1.xml · nonDerivative · entry 7

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,145,333

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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December 06, 2024 Filed Dec 9, 2024 17:32 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 5,798 $11.74 $68,077.80
Disclosure

SEC source: 0001104659-24-126834 · tm2430544-1_4seq1.xml · nonDerivative · entry 3

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 873,686

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 05, 2024 Filed Dec 9, 2024 17:32 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 11,082 $11.74 $130,127.06
Disclosure

SEC source: 0001104659-24-126834 · tm2430544-1_4seq1.xml · nonDerivative · entry 6

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,133,737

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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December 05, 2024 Filed Dec 9, 2024 17:32 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 5,542 $11.74 $65,075.27
Disclosure

SEC source: 0001104659-24-126834 · tm2430544-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 867,888

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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December 03, 2024 Filed Dec 5, 2024 16:37 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 4,133 $11.75 $48,551.18
Disclosure

SEC source: 0001104659-24-125926 · tm2430236-1_4seq1.xml · nonDerivative · entry 5

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,122,655

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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December 03, 2024 Filed Dec 5, 2024 16:37 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 2,067 $11.75 $24,281.46
Disclosure

SEC source: 0001104659-24-125926 · tm2430236-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 862,346

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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November 26, 2024 Filed Nov 29, 2024 16:05 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 1,600 $11.74 $18,790.40
Disclosure

SEC source: 0001104659-24-124078 · tm2429830-1_4seq1.xml · nonDerivative · entry 5

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,118,522

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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November 26, 2024 Filed Nov 29, 2024 16:05 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 800 $11.74 $9,395.20
Disclosure

SEC source: 0001104659-24-124078 · tm2429830-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 860,279

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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November 22, 2024 Filed Nov 26, 2024 16:50 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 24,480 $11.71 $286,665.70
Disclosure

SEC source: 0001104659-24-123141 · tm2429598-1_4seq1.xml · nonDerivative · entry 5

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,116,922

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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November 22, 2024 Filed Nov 26, 2024 16:50 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 12,241 $11.71 $143,344.56
Disclosure

SEC source: 0001104659-24-123141 · tm2429598-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 859,479

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

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November 21, 2024 Filed Nov 22, 2024 17:25 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 36,118 $11.59 $418,506.49
Disclosure

SEC source: 0001104659-24-122182 · tm2429336-1_4seq1.xml · nonDerivative · entry 7

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,092,442

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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November 21, 2024 Filed Nov 22, 2024 17:25 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 18,059 $11.59 $209,253.24
Disclosure

SEC source: 0001104659-24-122182 · tm2429336-1_4seq1.xml · nonDerivative · entry 3

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 847,238

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
November 20, 2024 Filed Nov 22, 2024 17:25 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 23,245 $11.51 $267,512.76
Disclosure

SEC source: 0001104659-24-122182 · tm2429336-1_4seq1.xml · nonDerivative · entry 6

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,056,324

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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November 20, 2024 Filed Nov 22, 2024 17:25 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 11,622 $11.51 $133,750.62
Disclosure

SEC source: 0001104659-24-122182 · tm2429336-1_4seq1.xml · nonDerivative · entry 2

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 829,179

F2 · ownership.nature: The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Read SEC document
November 19, 2024 Filed Nov 20, 2024 16:49 UTC New Mountain Finance Corp NMFC · Entity 5211 PurchaseCommon Stock 36,541 $11.63 $424,865.86
Disclosure

SEC source: 0001104659-24-121056 · tm2429034-1_4seq1.xml · nonDerivative · entry 7

KLINSKY STEVEN B · CIK 0001018327 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Note

Disclosed balance after: 4,033,079

F5 · ownership.nature: The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

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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.