← United States · Coverage record
US · SEC FORM 4
Custom Truck One Source, Inc.
CTOS · NYSE · CIK 0001709682 · Industrials · Rental & Leasing Services
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
0 Form 4 transaction lines observed in the same window
0 sales · 0 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
Insider activity timeline
No Form 4 transaction event is present in the current 180-day window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-01-30 · PE One Source Holdings, LLC; Platinum Equity InvestCo, L.P.; Platinum Equity Investment Holdings IC (Cayman), LLC; Platinum Equity Investment Holdings V Manager, LLC; Platinum Equity Investment Holdings V, LLC; Platinum Equity Investment Holdings, LLC; Platinum Equity Partners V, L.P.; Platinum Equity Partners V, LLC; Platinum InvestCo (Cayman), LLC.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 4,056,271
- Previous report
- 4,670,693
- Avg daily volume
- 790,630
- Days to cover
- 5.1
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2025-01-30 | PE One Source Holdings, LLC; Platinum Equity InvestCo, L.P.; Platinum Equity Investment Holdings IC (Cayman), LLC; Platinum Equity Investment Holdings V Manager, LLC; Platinum Equity Investment Holdings V, LLC; Platinum Equity Investment Holdings, LLC; Platinum Equity Partners V, L.P.; Platinum Equity Partners V, LLC; Platinum InvestCo (Cayman), LLC | Purchase (P) | Common Stock | 8,143,635 | USD 4.00 | USD 32,574,540 | SEC filing ↗ |
| 2025-01-30 | Gores Tom; PLATINUM EQUITY, LLC | Purchase (P) | Common Stock | 8,143,635 | USD 4.00 | USD 32,574,540 | SEC filing ↗ |
| 2024-08-07 | Ross Joe P. | Purchase (P) | Common Stock | 84,254 | USD 3.98 | USD 335,331 | SEC filing ↗ |
| 2024-08-06 | Rich Thomas R. | Purchase (P) | Common Stock | 26,200 | USD 3.84 | USD 100,608 | SEC filing ↗ |
| 2024-06-14 | Heinberg Marshall | Purchase (P) | Common Stock | 10,000 | USD 4.34 | USD 43,400 | SEC filing ↗ |
| 2024-05-08 | McMonagle Ryan | Purchase (P) | Common Stock | 10,000 | USD 4.04 | USD 40,400 | SEC filing ↗ |
| 2024-05-08 | NELSON GEORGIA R | Purchase (P) | Common Stock | 12,000 | USD 4.12 | USD 49,440 | SEC filing ↗ |
| 2024-05-07 | Heinberg Marshall | Purchase (P) | Common Stock | 40,000 | USD 4.07 | USD 162,800 | SEC filing ↗ |
| 2024-05-07 | Eperjesy Christopher J | Purchase (P) | Common Stock | 20,000 | USD 3.90 | USD 78,000 | SEC filing ↗ |
| 2024-05-07 | BARRETT RAYMOND TODD | Purchase (P) | Common Stock | 3,000 | USD 4.12 | USD 12,360 | SEC filing ↗ |
| 2023-11-14 | McMonagle Ryan | Purchase (P) | Common Stock | 20,000 | USD 5.17 | USD 103,400 | SEC filing ↗ |
| 2023-11-13 | Eperjesy Christopher J | Purchase (P) | Common Stock | 40,000 | USD 4.89 | USD 195,600 | SEC filing ↗ |
| 2023-11-10 | Heinberg Marshall | Purchase (P) | Common Stock | 15,000 | USD 4.79 | USD 71,850 | SEC filing ↗ |
| 2023-11-10 | EIN MARK | Purchase (P) | Common Stock | 100,000 | USD 4.96 | USD 496,000 | SEC filing ↗ |
| 2023-08-28 | BARRETT RAYMOND TODD | Purchase (P) | Common Stock | 10 | USD 6.41 | USD 64 | SEC filing ↗ |
Form 4 evidence
18 transaction lines in the latest 365-day window; 281 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-04-01 | Ross Joe P. | Option exercise / conversion (M) | Common Stock | 75,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-01 | Ross Joe P. | Tax withholding (F) | Common Stock | 33,788 | USD 6.62 | USD 223,677 | SEC filing ↗ |
| 2026-04-01 | Ross Fredrick M. Jr. | Option exercise / conversion (M) | Common Stock | 131,250 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (18 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-04-01 | Ross Joe P. | Option exercise / conversion (M) | Common Stock | 75,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-01 | Ross Joe P. | Tax withholding (F) | Common Stock | 33,788 | USD 6.62 | USD 223,677 | SEC filing ↗ |
| 2026-04-01 | Ross Fredrick M. Jr. | Option exercise / conversion (M) | Common Stock | 131,250 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-01 | Ross Fredrick M. Jr. | Tax withholding (F) | Common Stock | 39,441 | USD 6.62 | USD 261,099 | SEC filing ↗ |
| 2026-04-01 | Rich Thomas R. | Option exercise / conversion (M) | Common Stock | 75,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-01 | Rich Thomas R. | Tax withholding (F) | Common Stock | 22,538 | USD 6.62 | USD 149,202 | SEC filing ↗ |
| 2026-04-01 | McMonagle Ryan | Option exercise / conversion (M) | Common Stock | 121,875 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-01 | McMonagle Ryan | Tax withholding (F) | Common Stock | 54,906 | USD 6.62 | USD 363,478 | SEC filing ↗ |
| 2026-04-01 | JOLAS PAUL M | Option exercise / conversion (M) | Common Stock | 50,625 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-01 | JOLAS PAUL M | Tax withholding (F) | Common Stock | 19,923 | USD 6.62 | USD 131,890 | SEC filing ↗ |
| 2026-04-01 | Eperjesy Christopher J | Option exercise / conversion (M) | Common Stock | 90,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-01 | Eperjesy Christopher J | Tax withholding (F) | Common Stock | 40,547 | USD 6.62 | USD 268,421 | SEC filing ↗ |
| 2026-02-23 | Ross Joe P. | Award / grant (A) | Common Stock | 24,796 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-23 | Ross Fredrick M. Jr. | Award / grant (A) | Common Stock | 43,392 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-23 | Rich Thomas R. | Award / grant (A) | Common Stock | 24,796 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-23 | McMonagle Ryan | Award / grant (A) | Common Stock | 40,292 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-23 | JOLAS PAUL M | Award / grant (A) | Common Stock | 16,739 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-23 | Eperjesy Christopher J | Award / grant (A) | Common Stock | 27,895 | USD 0.00 | USD 0 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-19 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | CTOS |
| CIK | 0001709682 |
| Sector | Industrials |
| Industry | Rental & Leasing Services Yahoo Finance |
| SEC SIC | 7359 Services-Equipment Rental & Leasing, NEC |
| Exchange | NYSE |
Data coverage
| Local Form 4 history | 281 transaction lines from 2020-05-12 to 2026-04-01 54 P purchase lines · 48 S sale lines · 179 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.