12 insiders reported 90 Form 4 transactions for Allison Transmission Holdings Inc (ALSN) over the past 18 months (most recent 2026-08-25). Recent activity: Graziosi David S. (Chair, President and CEO) Buy 26,708 shares, Graziosi David S. (Chair, President and CEO) Sell 13,100 shares, Graziosi David S. (Chair, President and CEO) Sell 9,050 shares, Graziosi David S. (Chair, President and CEO) Sell 4,558 shares, Scroggins Eric C. (CLO & Asst. Secretary) Sell 1,050 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-25 | Graziosi David S. | Chair, President and CEO | Buy | 26,708 | $1.0M |
| 2026-08-25 | Graziosi David S. | Chair, President and CEO | Sell | 13,100 | $1.7M |
| 2026-08-25 | Graziosi David S. | Chair, President and CEO | Sell | 9,050 | $1.2M |
| 2026-08-25 | Graziosi David S. | Chair, President and CEO | Sell | 4,558 | $610,990 |
| 2026-08-13 | Scroggins Eric C. | CLO & Asst. Secretary | Sell | 1,050 | $131,250 |
| 2026-08-11 | Bohley G Frederick | Title: President and Business Unit Lead Allison Transmission and Allison Chief Operating Officer | Buy | 3,961 | $146,993 |
| 2026-08-11 | Bohley G Frederick | Title: President and Business Unit Lead Allison Transmission and Allison Chief Operating Officer | Sell | 3,961 | $484,748 |
| 2026-06-08 | Bohley G Frederick | See Remarks | Buy | 533 | $0 |
| 2026-06-08 | Bohley G Frederick | See Remarks | Buy | 10 | $0 |
| 2026-06-08 | Bohley G Frederick | See Remarks | Sell | 242 | $28,648 |
| 2026-05-11 | Mell Scott A | CFO & Treasurer | Sell | 1,337 | $167,125 |
| 2026-05-11 | Mell Scott A | CFO & Treasurer | Buy | 1,337 | $119,541 |
| 2026-05-11 | Mell Scott A | CFO & Treasurer | Sell | 933 | $116,625 |
| 2026-05-08 | BARBOUR D. SCOTT | Director | Buy | 92 | $0 |
| 2026-05-08 | BARBOUR D. SCOTT | Director | Buy | 1,586 | $0 |
| 2026-05-08 | Perna Gustave | Director | Buy | 1,586 | $0 |
| 2026-05-08 | Christman Philip J | Director | Buy | 92 | $0 |
| 2026-05-08 | Christman Philip J | Director | Buy | 1,586 | $0 |
| 2026-05-08 | Shivram Krishna | Director | Buy | 1,586 | $0 |
| 2026-05-08 | Ostojic Sasha | Director | Buy | 1,586 | $0 |
| 2026-04-16 | Mell Scott A | CFO & Treasurer | Buy | 2,842 | $0 |
| 2026-04-16 | Mell Scott A | CFO & Treasurer | Buy | 23 | $0 |
| 2026-04-16 | Mell Scott A | CFO & Treasurer | Sell | 879 | $112,741 |
| 2026-03-10 | Scroggins Eric C. | CLO & Asst. Secretary | Sell | 1,313 | $150,207 |
| 2026-03-03 | Graziosi David S. | Chair, President and CEO | Buy | 78,893 | $0 |
Source: SEC Form 4 filings · as of 2026-08-25