🕵️ Allison Transmission Holdings Inc ($ALSN)
SEC insider & ownership activity, last 12 months · CIK 1411207 · every row links its SEC filing
Over the last 12 months insiders sold $6.1M with no open-market buying against it. David S. Graziosi sold $3.6M in discretionary trades (Aug). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 5 sellers, $6.1M (13 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| David S. Graziosi | 0 | – | 3 | $3.6M | Aug 21, 2026 |
| Bohley G. Frederick | 0 | – | 4 | $1.7M | Aug 10, 2026 |
| Coll John | 0 | – | 2 | $328K | Dec 31, 2025 |
| Scott A. Mell | 0 | – | 2 | $284K | May 8, 2026 |
| Eric C. Scroggins | 0 | – | 2 | $281K | Aug 11, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Capital Management | 5.2% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| David S. Graziosi | $3.6M | Aug 21, 2026 | filing ↗ |
| Eric C. Scroggins | $131K | Aug 11, 2026 | filing ↗ |
| Bohley G. Frederick | $485K | Aug 10, 2026 | filing ↗ |
| Scott A. Mell | $167K | May 8, 2026 | filing ↗ |
| Eric C. Scroggins | $150K | Mar 9, 2026 | filing ↗ |
| Ryan A. Milburn | $495K | Mar 5, 2026 | filing ↗ |
| Coll John | $343K | Mar 2, 2026 | filing ↗ |
| Van Niekerk Teresa | $791K | Feb 26, 2026 | filing ↗ |
| Ryan A. Milburn | $144K | Feb 25, 2026 | filing ↗ |
| Bohley G. Frederick | $1.2M | Feb 13, 2026 | filing ↗ |
| Pittard Dana Jh | $751K | Jan 15, 2026 | filing ↗ |
| Coll John | $177K | Dec 31, 2025 | filing ↗ |
| Coll John | $151K | Sep 30, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Aug 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 3, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 11, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 6, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 6, 2026 | filing ↗ |
| Earnings (2.02) | May 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 4, 2026 | filing ↗ |
| Earnings (2.02) | Feb 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 1, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 1, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | Jan 1, 2026 | filing ↗ |
| New financial obligation (2.03) | Jan 1, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 1, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 1, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 1, 2026 | filing ↗ |
| Material agreement (1.01) | Nov 21, 2025 | filing ↗ |
| New financial obligation (2.03) | Nov 21, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 21, 2025 | filing ↗ |
| Other events (8.01) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 4, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 30, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 30, 2025 | filing ↗ |
| Earnings (2.02) | Oct 29, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 29, 2025 | filing ↗ |