Custom Truck One Source Inc. (CTOS) - Insider Holders & Insider Ownership

List of insiders holdings for Custom Truck One Source Inc.:
  1. Shares directly owned by the insider.
  2. Shares indirectly owned by the insider.
  3. Total shares owned by the insider (sum of shares directly and indirectly owned).
  4. Total market value if available.
  5. Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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#Insider Holder NameReport
Date Time		Shares Owned
Directly
Indirectly		Total
Shares Owned		Filing
1PLATINUM EQUITY LLC
Gores Tom
10% Owner		2025-02-03 19:14:070
156,743,635		156,743,635Form 4
2PE One Source Holdings LLC
Platinum Equity Partners V L.P.
Platinum Equity Partners V LLC
Platinum Equity Investment Holdings V LLC
Platinum Equity Investment Holdings V Manager LLC
Platinum Equity InvestCo L.P.
Platinum InvestCo (Cayman) LLC
Platinum Equity Investment Holdings IC (Cayman) LLC
Platinum Equity Investment Holdings LLC
10% Owner		2025-02-03 19:15:480
156,743,635		156,743,635Form 4
3PE One Source Holdings LLC
Platinum Equity Capital Partners V L.P.
Platinum Equity Partners V L.P.
Platinum Equity Partners V LLC
Platinum Equity Investment Holdings V LLC
Platinum Equity Investment Holdings V Manager LLC
Platinum Equity InvestCo L.P.
Platinum InvestCo (Cayman) LLC
Platinum Equity Investment Holdings IC (Cayman) LLC
Platinum Equity Investment Holdings LLC
10% Owner		2021-04-05 16:58:200
148,600,000		148,600,000Form 4
4NESCO Holdings LP
NESCO Holdings GP LLC
ECP Cardinal Holdings LP
10% Owner		2024-09-09 18:30:070
23,384,879		23,384,879Form 4
5EIN MARK
Director		2026-04-02 16:30:035,185,403
0		5,185,403Form 4
6Dryden L. Dyson
Director		2020-06-15 16:59:2335,000
4,081,814		4,116,814Form 4
7Ross Fredrick M. Jr.
Director		2026-04-03 18:07:28933,938
2,000,000		2,933,938Form 4
8STOOPS JEFFREY
Director		2020-06-15 16:23:44135,000
1,166,667		1,301,667Form 4
9McMonagle Ryan
Chief Executive Officer		2026-04-03 18:08:211,074,109
0		1,074,109Form 4
10Ross Joe P.
President - Sales		2026-04-03 18:07:14602,493
282,449		884,942Form 4
11Boone Joshua A
Chief Financial Officer		2020-06-18 16:19:07716,900
0		716,900Form 4
12Rich Thomas R.
President - Rentals		2026-04-03 18:07:42588,635
0		588,635Form 4
13Heinberg Marshall A
Director		2026-04-02 16:30:06435,153
120,000		555,153Form 4
14Eperjesy Christopher J
Chief Financial Officer		2026-04-03 18:08:07491,426
0		491,426Form 4
15Calcano Lawrence
Director		2019-08-01 08:43:18348,996
0		348,996Form 4
16Coburn Brooke B.
Director		2019-08-01 08:45:15348,996
0		348,996Form 4
17Donaldson Richard C
Director		2019-08-01 08:47:32348,996
0		348,996Form 4
18JACOBSON LEE
CEO		2020-05-14 17:50:36262,993
0		262,993Form 4
19JOLAS PAUL M
EVP, General Counsel & Sec.		2026-04-03 18:07:54254,910
0		254,910Form 4
20Meader Brad
Chief Financial Officer		2022-04-05 20:08:07187,836
0		187,836Form 4
21Holthaus Gerard E
Director		2020-06-15 16:22:50185,000
0		185,000Form 4
22PLUMMER WILLIAM B
Director		2020-06-15 16:20:04183,000
0		183,000Form 4
23Haubenreich Adam G.
VP and General Counsel		2023-04-04 20:16:38174,246
0		174,246Form 4
24NELSON GEORGIA R
Director		2026-04-02 16:30:08151,888
0		151,888Form 4
25BADER PAUL T
Director		2026-04-02 16:30:09139,888
0		139,888Form 4
26Carlsen James
CIO		2024-04-03 16:38:50130,320
0		130,320Form 4
27Jackson Mary M.
Director		2026-04-02 16:30:04101,257
0		101,257Form 4
28Turner Michael Thomas
EVP - PTA		2021-04-09 16:31:0150,000
0		50,000Form 3
29BLACKADAR ROBERT
President		2020-05-13 16:10:0746,375
0		46,375Form 4
30HEINEMANN BRUCE
Chief Financial Officer		2020-03-20 16:43:0336,601
0		36,601Form 4
31KAPELKE KEVIN
Chief Operating Officer		2020-03-20 16:43:5329,701
0		29,701Form 4
32BARRETT RAYMOND TODD
Chief Accounting Officer		2025-04-30 19:11:1025,000
0		25,000Form 4
33Munfa John-Paul
Director		2021-04-05 20:24:3813,631
0		13,631Form 4
34Blackstone Holdings II L.P.
BLACKSTONE FAMILY GP LLC
BEP Side-by-Side GP NQ L.L.C.
Blackstone Management Associates VI-NQ L.L.C.
BMA VI-NQ L.L.C.
Blackstone Holdings III GP L.P.
Blackstone Holdings III GP Management L.L.C.
BCP VI-NQ Side-by-Side GP L.L.C.
Blackstone Holdings I/II GP L.L.C.
Former 10% Owner		2022-02-18 19:33:160
0		0Form 4
35ECP ControlCo LLC
ENERGY CAPITAL PARTNERS III LLC
Energy Capital Partners GP III LP
ENERGY CAPITAL PARTNERS III LP
ENERGY CAPITAL PARTNERS III-A LP
ENERGY CAPITAL PARTNERS III-B LP
ENERGY CAPITAL PARTNERS III-C LP
ENERGY CAPITAL PARTNERS III-D LP
ENERGY CAPITAL PARTNERS GP III CO-INVESTMENT (NESCO) LLC
Energy Capital Partners III (NESCO Co-Invest) LP
10% Owner		2025-02-03 17:00:270
0		0Form 13D
36Energy Capital Partners Management LP
Director		2024-08-29 16:30:260
0		0Form 4
37ECP ControlCo LLC
ECP Management GP LLC
Energy Capital Partners Management LP
Director
10% Owner		2025-02-03 17:00:270
0		0Form 13D
38Blackstone Energy Partners NQ L.P.
BEP CTOS Holdings L.P.
Blackstone Energy Family Investment Partnership SMD L.P.
Blackstone Energy Family Investment Partnership NQ ESC L.P.
Blackstone Capital Partners VI-NQ L.P.
BCP CTOS Holdings L.P.
Blackstone Family Investment Partnership VI-NQ ESC L.P.
Blackstone Energy Management Associates NQ L.L.C.
Blackstone EMA-NQ L.L.C.
Former 10% Owner		2022-02-18 19:29:120
0		0Form 4
39Blackstone Holdings III L.P.
Blackstone Inc
Blackstone Group Management L.L.C.
SCHWARZMAN STEPHEN A
Former 10% Owner		2022-02-18 19:35:000
0		0Form 4
40Saemundsson Alfheidur
EVP and Secretary		2017-08-15 16:55:200
0		0Form 3
41Samson Louis
Director		2021-04-05 20:16:440
0		0Form 3
42Kelln Bryan
Director		2021-04-05 20:12:020
0		0Form 3
43Wolf David M.
Director		2021-04-05 20:10:130
0		0Form 3
44Glatt David M.
Director		2021-04-05 20:09:430
0		0Form 3
45GRAY JENNIFER MARIE
Director		2019-08-27 16:55:390
0		0Form 3
46Himler Matthew H
Director		2019-08-27 16:54:350
0		0Form 3
47KIMMELMAN DOUGLAS W
Director		2019-08-01 08:25:450
0		0Form 3
48D'Argenio Rahman
Director		2019-08-01 08:16:310
0		0Form 3