Platinum Equity Investment Holdings V Manager, LLC

SEC source: 0001104659-25-008749 · tm254247-4_4seq1.xml · nonDerivative · entry 1

PE One Source Holdings, LLC · CIK 0001855018 · 10% owner

Platinum Equity Partners V, L.P. · CIK 0001854950 · 10% owner

Platinum Equity Partners V, LLC · CIK 0001854827 · 10% owner

Platinum Equity Investment Holdings V, LLC · CIK 0001854932 · 10% owner

Platinum Equity Investment Holdings V Manager, LLC · CIK 0001854967 · 10% owner

Platinum Equity InvestCo, L.P. · CIK 0001756331 · 10% owner

Platinum InvestCo (Cayman), LLC · CIK 0001766567 · 10% owner

Platinum Equity Investment Holdings IC (Cayman), LLC · CIK 0001756330 · 10% owner

Platinum Equity Investment Holdings, LLC · CIK 0001634372 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 156,743,635

F1 · ownership.nature: PE One Source Holdings, LLC ("PE One Source") is the record holder of the securities reported herein. Tom Gores is the manager of Platinum Equity, LLC, which is the sole member of Platinum Equity Investment Holdings, LLC, which is the sole member of Platinum Equity Investment Holdings IC (Cayman), LLC, which is the general partner of Platinum Equity InvestCo, L.P., which is the sole member of Platinum Equity Investment Holdings V, LLC, which is the sole member of Platinum Equity Partners V, LLC, which is the general partner of Platinum Equity Partners V, L.P., which is the general partner of Platinum Equity Capital Partners V, L.P., which holds a majority of the outstanding equity of PE One Source.

F2 · ownership.nature: Additionally, Platinum Equity, LLC is also the sole member of Platinum Equity Investment Holdings V Manager, LLC, which is the sole manager of Platinum Equity Investment Holdings V, LLC. Platinum Equity, LLC and Tom Gores together hold a controlling interest in Platinum InvestCo (Cayman), LLC, which holds a controlling interest in Platinum Equity InvestCo, L.P. By virtue of these relationships, each of these entities and Mr. Gores may be deemed to share beneficial ownership of the securities held of record by PE One Source. Each of these entities and Mr. Gores disclaim any such beneficial ownership except to the extent of their pecuniary interests therein.

SEC source: 0001140361-21-011617 · form4.xml · nonDerivative · entry 1

PE One Source Holdings, LLC · CIK 0001855018 · 10% owner

Platinum Equity Capital Partners V, L.P. · CIK 0001778958 · 10% owner

Platinum Equity Partners V, L.P. · CIK 0001854950 · 10% owner

Platinum Equity Partners V, LLC · CIK 0001854827 · 10% owner

Platinum Equity Investment Holdings V, LLC · CIK 0001854932 · 10% owner

Platinum Equity Investment Holdings V Manager, LLC · CIK 0001854967 · 10% owner

Platinum Equity InvestCo, L.P. · CIK 0001756331 · 10% owner

Platinum InvestCo (Cayman), LLC · CIK 0001766567 · 10% owner

Platinum Equity Investment Holdings IC (Cayman), LLC · CIK 0001756330 · 10% owner

Platinum Equity Investment Holdings, LLC · CIK 0001634372 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 148,600,000

F1 · ownership.direct: Two Forms 4 are being filed, covering a total of twelve (12) reporting persons. This is the first of the two Forms 4 (the "First Form 4") and is being filed by each of: (i) PE One Source Holdings, LLC, a Delaware limited liability company ("PE One Source"), (ii) Platinum Equity Capital Partners V, L.P., a Delaware limited partnership ("PECP V"), (iii) Platinum Equity Partners V, L.P., a Delaware limited partnership ("PEP V LP"), (iv) Platinum Equity Partners V, LLC, a Delaware limited liability company ("PEP V LLC"), (v) Platinum Equity Investment Holdings V, LLC, a Delaware limited liability company ("PEIH V"), (vi) Platinum Equity Investment Holdings V Manager, LLC, a Delaware limited liability company ("PEIH V Manager"), (vii) Platinum Equity InvestCo, L.P., a Cayman Islands limited partnership ("PEIC LP"), (viii) Platinum InvestCo (Cayman), LLC, a Cayman Islands limited liability company ("PIC LLC"),

F2 · ownership.direct: (Continued From Footnote 1) (ix) Platinum Equity Investment Holdings IC (Cayman), LLC, a Delaware limited liability company ("PEIH IC LLC"), and (x) Platinum Equity Investment Holdings, LLC, a Delaware limited liability company ("Platinum Holdings"). The second of the two Forms 4 (the "Second Form 4") is being filed by (xi) Platinum Equity, LLC, a Delaware limited liability company ("Platinum Equity," and together with the entities listed in clauses (i)-(x), the "Platinum Entities," and (xii) Tom Gores, an individual and citizen of the United States (each person or entity listed in clauses (i)-(xii), a "Reporting Person" and, collectively, the "Reporting Persons"). PE One Source directly owns 148,600,000 shares of common stock, par value $0.0001 per share (the "Shares"), of Custom Truck One Source, Inc. (the "Issuer"). PECP V holds a majority of the outstanding equity in PE One Source and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PE One Source.

F3 · ownership.direct: (Continued From Footnote 2) PEP V LP is the general partner of PECP V and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PECP V. PEP V LLC is the general partner of PEP V LP and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEP V LP. PEIH V holds all of the outstanding equity in PEP V LLC and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEP V LLC. PEIH V Manager is the sole manager of PEIH V and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEIH V. PEIC LP holds all of the outstanding equity in PEIH V and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEIH V. PIC LLC holds a controlling interest in PEIC LP and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEIC LP. PEIH IC LLC is the general partner of PEIC LP and, accordingly, may be deemed to beneficially own the Shares beneficia

F4 · ownership.direct: (Continued From Footnote 3) Platinum Equity is the sole member of Platinum Holdings, and PEIH V Manager and, accordingly, may be deemed to beneficially own the Shares beneficially owned by each of Platinum Holdings and PEIH V Manager. Platinum Equity and Tom Gores, together, hold a controlling interest in PIC LLC and may be deemed to beneficially own the Shares beneficially owned by PIC LLC. Tom Gores is the Chairman and Chief Executive Officer of Platinum Equity and, accordingly, may be deemed to beneficially own the Shares beneficially owned by Platinum Equity. Mr. Gores disclaims beneficial ownership of all the Shares held by each of the entities listed above with respect to which he does not have a pecuniary interest. Because of the relationship discussed above, each Reporting Person may be deemed to beneficially own the Shares reported in this Form 4.

F5 · ownership.direct: Pursuant to Rule 16a-1(a)(4) under the Exchange Act, this filing shall not be deemed an admission that the Reporting Persons are, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owners of any equity securities in excess of their respective pecuniary interests.

F1 · ownership.nature: Two Forms 4 are being filed, covering a total of twelve (12) reporting persons. This is the first of the two Forms 4 (the "First Form 4") and is being filed by each of: (i) PE One Source Holdings, LLC, a Delaware limited liability company ("PE One Source"), (ii) Platinum Equity Capital Partners V, L.P., a Delaware limited partnership ("PECP V"), (iii) Platinum Equity Partners V, L.P., a Delaware limited partnership ("PEP V LP"), (iv) Platinum Equity Partners V, LLC, a Delaware limited liability company ("PEP V LLC"), (v) Platinum Equity Investment Holdings V, LLC, a Delaware limited liability company ("PEIH V"), (vi) Platinum Equity Investment Holdings V Manager, LLC, a Delaware limited liability company ("PEIH V Manager"), (vii) Platinum Equity InvestCo, L.P., a Cayman Islands limited partnership ("PEIC LP"), (viii) Platinum InvestCo (Cayman), LLC, a Cayman Islands limited liability company ("PIC LLC"),

F2 · ownership.nature: (Continued From Footnote 1) (ix) Platinum Equity Investment Holdings IC (Cayman), LLC, a Delaware limited liability company ("PEIH IC LLC"), and (x) Platinum Equity Investment Holdings, LLC, a Delaware limited liability company ("Platinum Holdings"). The second of the two Forms 4 (the "Second Form 4") is being filed by (xi) Platinum Equity, LLC, a Delaware limited liability company ("Platinum Equity," and together with the entities listed in clauses (i)-(x), the "Platinum Entities," and (xii) Tom Gores, an individual and citizen of the United States (each person or entity listed in clauses (i)-(xii), a "Reporting Person" and, collectively, the "Reporting Persons"). PE One Source directly owns 148,600,000 shares of common stock, par value $0.0001 per share (the "Shares"), of Custom Truck One Source, Inc. (the "Issuer"). PECP V holds a majority of the outstanding equity in PE One Source and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PE One Source.

F3 · ownership.nature: (Continued From Footnote 2) PEP V LP is the general partner of PECP V and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PECP V. PEP V LLC is the general partner of PEP V LP and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEP V LP. PEIH V holds all of the outstanding equity in PEP V LLC and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEP V LLC. PEIH V Manager is the sole manager of PEIH V and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEIH V. PEIC LP holds all of the outstanding equity in PEIH V and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEIH V. PIC LLC holds a controlling interest in PEIC LP and, accordingly, may be deemed to beneficially own the Shares beneficially owned by PEIC LP. PEIH IC LLC is the general partner of PEIC LP and, accordingly, may be deemed to beneficially own the Shares beneficia

F4 · ownership.nature: (Continued From Footnote 3) Platinum Equity is the sole member of Platinum Holdings, and PEIH V Manager and, accordingly, may be deemed to beneficially own the Shares beneficially owned by each of Platinum Holdings and PEIH V Manager. Platinum Equity and Tom Gores, together, hold a controlling interest in PIC LLC and may be deemed to beneficially own the Shares beneficially owned by PIC LLC. Tom Gores is the Chairman and Chief Executive Officer of Platinum Equity and, accordingly, may be deemed to beneficially own the Shares beneficially owned by Platinum Equity. Mr. Gores disclaims beneficial ownership of all the Shares held by each of the entities listed above with respect to which he does not have a pecuniary interest. Because of the relationship discussed above, each Reporting Person may be deemed to beneficially own the Shares reported in this Form 4.

F5 · ownership.nature: Pursuant to Rule 16a-1(a)(4) under the Exchange Act, this filing shall not be deemed an admission that the Reporting Persons are, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owners of any equity securities in excess of their respective pecuniary interests.