# Custom Truck One Source, Inc.: filings

CTOS · NYSE · CIK 1709682 · [Industrials](/sectors/industrials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/ctos.md) · [Financials](/companies/ctos/financials.md) · [Filings](/companies/ctos/filings.md) · [Insiders](/companies/ctos/insiders.md)

## Reports and events: 183 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 236, 8-K 114, 3 46, 10-Q 28, CORRESP 18, UPLOAD 14, DEFA14A 11, 10-K 9, 425 9, SC 13D/A 9, DEF 14A 8, SC 13G/A 7, 144 5, 4/A 5, EFFECT 5, S-8 5, ARS 4, SC 13D 4, SC 13G 4, SCHEDULE 13D/A 4, 424B3 3, S-1/A 3, S-3 3, 25-NSE 2, 424B7 2, 8-K/A 2, PRE 14A 2, S-4/A 2, 10-Q/A 1, 424B4 1, 8-A12B 1, 8-K12B 1, CERTNYS 1, D 1, POS AM 1, RW 1, S-1 1, S-3/A 1, S-4 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-26 | 16:13 ET | [8-K](/filings/0001709682-26-000045.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-26-000045 |
| 2026-08-03 | 16:16 ET | [10-Q](/filings/0001709682-26-000040.md) | Quarterly report, period 2026-06-30 | 0001709682-26-000040 |
| 2026-08-03 | 16:14 ET | [8-K](/filings/0001709682-26-000039.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-26-000039 |
| 2026-06-11 | 11:18 ET | [8-K](/filings/0001709682-26-000034.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001709682-26-000034 |
| 2026-04-29 | 19:05 ET | [DEF 14A](/filings/0001709682-26-000030.md) | Proxy statement, period 2025-12-31 | 0001709682-26-000030 |
| 2026-04-27 | 16:17 ET | [10-Q](/filings/0001709682-26-000018.md) | Quarterly report, period 2026-03-31 | 0001709682-26-000018 |
| 2026-04-27 | 16:14 ET | [8-K](/filings/0001709682-26-000017.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-26-000017 |
| 2026-03-25 | 16:13 ET | [8-K](/filings/0001709682-26-000010.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-26-000010 |
| 2026-03-10 | 07:06 ET | [10-K](/filings/0001709682-26-000008.md) | Annual report, period 2025-12-31 | 0001709682-26-000008 |
| 2026-03-10 | 07:01 ET | [8-K](/filings/0001709682-26-000006.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-26-000006 |
| 2025-12-23 | 16:23 ET | [8-K](/filings/0001709682-25-000043.md) | 5.02 Departure or appointment of officers or directors | 0001709682-25-000043 |
| 2025-10-27 | 16:12 ET | [10-Q](/filings/0001709682-25-000039.md) | Quarterly report, period 2025-09-30 | 0001709682-25-000039 |
| 2025-10-27 | 16:11 ET | [8-K](/filings/0001709682-25-000038.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001709682-25-000038 |
| 2025-10-21 | 16:30 ET | [SCHEDULE 13D/A](/filings/0001213900-25-100831.md) | Ownership report, active investor, amended | 0001213900-25-100831 |
| 2025-07-30 | 16:13 ET | [10-Q](/filings/0001709682-25-000031.md) | Quarterly report, period 2025-06-30 | 0001709682-25-000031 |
| 2025-07-30 | 16:11 ET | [8-K](/filings/0001709682-25-000030.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-25-000030 |
| 2025-06-12 | 16:31 ET | [8-K](/filings/0001709682-25-000025.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001709682-25-000025 |
| 2025-04-30 | 16:17 ET | [10-Q](/filings/0001709682-25-000023.md) | Quarterly report, period 2025-03-31 | 0001709682-25-000023 |
| 2025-04-30 | 16:14 ET | [8-K](/filings/0001709682-25-000022.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-25-000022 |
| 2025-04-28 | 16:42 ET | [DEF 14A](/filings/0001709682-25-000016.md) | Proxy statement, period 2024-12-31 | 0001709682-25-000016 |
| 2025-03-04 | 17:16 ET | [10-K](/filings/0001709682-25-000006.md) | Annual report, period 2024-12-31 | 0001709682-25-000006 |
| 2025-03-04 | 16:17 ET | [8-K](/filings/0001709682-25-000004.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-25-000004 |
| 2025-02-03 | 19:13 ET | [SCHEDULE 13D/A](/filings/0001104659-25-008747.md) | Ownership report, active investor, amended | 0001104659-25-008747 |
| 2025-02-03 | 17:10 ET | [8-K](/filings/0001213900-25-009514.md) | 8.01 Other events | 0001213900-25-009514 |
| 2025-02-03 | 17:00 ET | [SCHEDULE 13D/A](/filings/0001493152-25-004688.md) | Ownership report, active investor, amended | 0001493152-25-004688 |
| 2024-12-23 | 20:20 ET | [SCHEDULE 13D/A](/filings/0001493152-24-051931.md) | Ownership report, active investor, amended | 0001493152-24-051931 |
| 2024-12-10 | 16:30 ET | [SC 13D/A](/filings/0001493152-24-049478.md) | Ownership report, active investor, amended | 0001493152-24-049478 |
| 2024-10-30 | 16:32 ET | [10-Q](/filings/0001709682-24-000073.md) | Quarterly report, period 2024-09-30 | 0001709682-24-000073 |
| 2024-10-30 | 16:30 ET | [8-K](/filings/0001709682-24-000072.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-24-000072 |
| 2024-09-09 | 18:30 ET | [SC 13D/A](/filings/0001493152-24-035538.md) | Ownership report, active investor, amended | 0001493152-24-035538 |
| 2024-08-20 | 08:59 ET | [8-K](/filings/0001709682-24-000067.md) | 5.02 Departure or appointment of officers or directors | 0001709682-24-000067 |
| 2024-08-12 | 09:00 ET | [8-K](/filings/0001709682-24-000060.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001709682-24-000060 |
| 2024-08-01 | 16:30 ET | [10-Q](/filings/0001709682-24-000053.md) | Quarterly report, period 2024-06-30 | 0001709682-24-000053 |
| 2024-08-01 | 16:28 ET | [8-K](/filings/0001709682-24-000052.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-24-000052 |
| 2024-06-14 | 17:02 ET | [8-K](/filings/0001709682-24-000045.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001709682-24-000045 |
| 2024-05-02 | 16:40 ET | [10-Q](/filings/0001709682-24-000037.md) | Quarterly report, period 2024-03-31 | 0001709682-24-000037 |
| 2024-05-02 | 16:32 ET | [8-K](/filings/0001709682-24-000036.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-24-000036 |
| 2024-04-26 | 16:21 ET | [DEF 14A](/filings/0001709682-24-000029.md) | Proxy statement, period 2023-12-31 | 0001709682-24-000029 |
| 2024-03-15 | 16:54 ET | [8-K](/filings/0001709682-24-000018.md) | 3.01 Delisting notice | 0001709682-24-000018 |
| 2024-03-12 | 16:30 ET | [8-K](/filings/0001709682-24-000014.md) | 8.01 Other events | 0001709682-24-000014 |
| 2024-03-07 | 16:19 ET | [10-K](/filings/0001709682-24-000010.md) | Annual report, period 2023-12-31 | 0001709682-24-000010 |
| 2024-03-07 | 16:18 ET | [8-K](/filings/0001709682-24-000009.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-24-000009 |
| 2023-11-07 | 16:22 ET | [10-Q](/filings/0001709682-23-000058.md) | Quarterly report, period 2023-09-30 | 0001709682-23-000058 |
| 2023-11-07 | 16:21 ET | [8-K](/filings/0001709682-23-000057.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-23-000057 |
| 2023-09-20 | 16:49 ET | [8-K](/filings/0001709682-23-000051.md) | 8.01 Other events | 0001709682-23-000051 |
| 2023-08-08 | 16:20 ET | [10-Q](/filings/0001709682-23-000048.md) | Quarterly report, period 2023-06-30 | 0001709682-23-000048 |
| 2023-08-08 | 16:17 ET | [8-K](/filings/0001709682-23-000047.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-23-000047 |
| 2023-06-20 | 16:01 ET | [8-K](/filings/0001213900-23-050028.md) | 5.02 Departure or appointment of officers or directors; 5.03 Amendment to articles or bylaws; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001213900-23-050028 |
| 2023-05-09 | 16:33 ET | [10-Q](/filings/0001709682-23-000043.md) | Quarterly report, period 2023-03-31 | 0001709682-23-000043 |
| 2023-05-09 | 16:30 ET | [8-K](/filings/0001709682-23-000042.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001709682-23-000042 |

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Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 26, 2026, 16:16 ET. No prices; not investment advice.