Allison Transmission Holdings (ALSN) stock: insider trades, news & valuation
Heavy sellingShare price and insider trades
Allison Transmission Holdings insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 5 sold $6.0M of ALSN stock on the open market.
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ALSN insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $4.2M | 5 |
| Q2 2026 | — | 0 | $284K | 2 |
| Q1 2026 | — | 0 | $1.4M | 4 |
| Q4 2025 | — | 0 | $177K | 1 |
| Q3 2025 | — | 0 | $151K | 1 |
Valuation, profit and volume
Summary
Over the past 12 months, 0 Allison Transmission Holdings Inc insiders reported open-market purchases totaling $0, while 5 insiders reported sales totaling $6.0M. 5 of 13 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
ALSN earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Aug 3, 2026 | -0.8% | None | +7.1%S&P +3.3% | +5.0% |
| May 4, 2026 | +4.4% | None | -2.9%S&P +0.4% | -6.8% |
| Feb 23, 2026 | +4.5% | Sold $1.2M | +2.6%S&P -0.3% | -4.4% |
| Oct 29, 2025 | +1.7% | Sold $151K | +1.8%S&P -1.1% | +6.4% |
| Aug 4, 2025 | -1.4% | None | -1.4%S&P +1.0% | +3.6% |
| May 1, 2025 | +3.6% | None | +5.4%S&P +2.2% | +6.7% |
| Feb 11, 2025 | -4.6% | None | -12.4%S&P -0.2% | -3.6% |
| Oct 29, 2024 | -0.4% | None | +8.2%S&P -0.1% | +9.9% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 25SEC | David S. GraziosiCEO, President | Sell | 13,100318,451 held (−4%) | $132.44 | $1.7M | -17.0% | — |
| Aug 25SEC | David S. GraziosiCEO, President | Sell | 9,050309,401 held (−3%) | $133.21 | $1.2M | -17.5% | — |
| Aug 25SEC | David S. GraziosiCEO, President | Sell | 4,558304,843 held (−1%) | $134.05 | $611K | -18.0% | — |
| Aug 13SEC | Eric C. ScrogginsGeneral Counsel | Sell | 1,05016,604 held (−6%) | $125.00 | $131K | -12.1% | — |
| Aug 11SEC | G Frederick BohleySee Remarks | Sell | 3,961112,886 held (−3%) | $122.38 | $485K | -10.2% | — |
| May 11SEC | Scott A MellCFO | Sell | 1,3371,053 held (−56%) | $125.00 | $167K | -12.1% | — |
| May 11SEC | Scott A MellCFO | Sell | 9331,053 held (−47%) | $125.00 | $117K | -12.1% | — |
| Mar 10SEC | Eric C. ScrogginsGeneral Counsel | Sell | 1,31317,654 held (−7%) | $114.40 | $150K | -4.0% | — |
| Feb 17SEC | G Frederick BohleyCOO | Sell Plan | 4,71299,074 held (−5%) | $117.02 | $551K | -6.1% | — |
| Feb 17SEC | G Frederick BohleyCOO | Sell Plan | 4,508103,786 held (−4%) | $116.00 | $523K | -5.3% | — |
| Feb 17SEC | G Frederick BohleyCOO | Sell Plan | 1,128108,294 held (−1%) | $115.41 | $130K | -4.8% | — |
| Jan 2SEC | John CollSvp, Global Mss | Sell Plan | 1,79110,021 held (−15%) | $98.79 | $177K | +11.2% | — |
| Oct 1SEC | John CollSvp, Global Mss | Sell Plan | 1,78811,812 held (−13%) | $84.32 | $151K | +30.3% | — |
Insiders at Allison Transmission Holdings Inc
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| David S. GraziosiCEO, President | — | $3.6M | Aug 25, 2026 | — |
| G Frederick BohleySee Remarks | — | $1.7M | Aug 11, 2026 | — |
| John CollSvp, Global Mss | — | $328K | Jan 2, 2026 | — |
| Scott A MellCFO | — | $284K | May 11, 2026 | — |
| Eric C. ScrogginsGeneral Counsel | — | $281K | Aug 13, 2026 | — |
ALSN stock: common questions
Are Allison Transmission Holdings Inc insiders buying ALSN stock?
In the past 12 months, 0 insiders reported open-market purchases of ALSN worth $0.
Are Allison Transmission Holdings Inc insiders selling ALSN stock?
5 insiders reported sales worth $6.0M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ALSN's 52-week range?
Over the past year ALSN has traded between $78.44 and $135.36. It last closed at $109.86 on Oct 9, 2026.