John Coll insider trades: Allison Transmission Holdings (ALSN) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where John reports to the SEC
Open-market buys and sales
15 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | ALSN | ↓ Sell10b5-1 | 1,791 | $98.79 | $177K | Direct | Jan 2, 2026 (2d) |
| Sep 30, 2025 | ALSN | ↓ Sell10b5-1 | 1,788 | $84.32 | $151K | Direct | Oct 1, 2025 (1d) |
| Jun 30, 2025 | ALSN | ↓ Sell10b5-1 | 1,788 | $94.69 | $169K | Direct | Jul 1, 2025 (1d) |
| Apr 1, 2025 | ALSN | ↓ Sell10b5-1 | 1,788 | $95.33 | $170K | Direct | Apr 3, 2025 (2d) |
| Dec 31, 2024 | ALSN | ↓ Sell10b5-1 | 2,000 | $108.40 | $217K | Direct | Jan 3, 2025 (3d) |
| Nov 15, 2024 | ALSN | ↓ Sell | 2,000 | $117.73 | $235K | Direct | Nov 19, 2024 (4d) |
| Sep 30, 2024 | ALSN | ↓ Sell10b5-1 | 2,000 | $95.80 | $192K | Direct | Oct 2, 2024 (2d) |
| Aug 29, 2024 | ALSN | ↓ Sell | 2,000 | $90.98 | $182K | Direct | Sep 3, 2024 (5d) |
| Jun 28, 2024 | ALSN | ↓ Sell10b5-1 | 2,000 | $75.06 | $150K | Direct | Jul 2, 2024 (4d) |
| Apr 1, 2024 | ALSN | ↓ Sell10b5-1 | 2,000 | $81.06 | $162K | Direct | Apr 3, 2024 (2d) |
| Feb 28, 2024 | ALSN | ↓ Sell | 5,800 | $75.72 | $439K | Direct | Feb 29, 2024 (1d) |
| Dec 29, 2023 | ALSN | ↓ Sell10b5-1 | 2,000 | $58.41 | $117K | Direct | Jan 2, 2024 (4d) |
| Sep 29, 2023 | ALSN | ↓ Sell10b5-1 | 2,000 | $60.19 | $120K | Direct | Oct 3, 2023 (4d) |
| Jun 30, 2023 | ALSN | ↓ Sell | 2,000 | $56.89 | $114K | Direct | Jun 30, 2023 (0d) |
| Jun 13, 2023 | ALSN | ↓ Sell | 2,000 | $54.00 | $108K | Direct | Jun 15, 2023 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ALSN insiders
Open-market trades in the last 12 months
About John Coll's insider trades
John Coll is SVP, Global MSS at Allison Transmission Holdings (ALSN). Since Jun 13, 2023, John has reported no open-market purchases and 15 sales worth $2.7M on SEC Form 4. In the last 12 months: 1 sale ($177K).
10 sales (60% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (49 filings), option exercises (18 filings), shares withheld for taxes (18 filings), gifts (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ALSN insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.