Allison Transmission Holdings Inc
Ownership
Ownership Structure
Who owns Allison Transmission Holdings Inc (ALSN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.1% of the shares are freely tradable; institutional investors hold 106.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 15.08 | 12,450,911 | +0.6 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.07 | 4,188,911 | +0.0 | 03/31/2026 |
| BlackRock Inc | 4.59 | 3,788,793 | +1.3 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.50 | 3,713,695 | +0.0 | 03/31/2026 |
| Fuller & Thaler Asset Management Inc | 4.11 | 3,394,635 | -48.8 | 03/31/2026 |
| Boston Partners Global Investors, Inc | 3.85 | 3,176,528 | +11.2 | 06/30/2026 |
| Renaissance Technologies Corp | 2.74 | 2,260,397 | -13.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.67 | 2,204,268 | +12.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.52 | 2,904,916 | +0.0 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.20 | 2,640,570 | +0.3 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Graziosi David S. | Chair, President and CEO | 304,843 | 36,520,191 $ | Aug 21, 2026 | direct |
| Bohley G Frederick | See Remarks | 112,886 | 13,523,743 $ | Aug 10, 2026 | direct |
| Scroggins Eric C. | CLO & Asst. Secretary | 16,604 | 1,989,159 $ | Aug 11, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 21, 2026 | Graziosi David S. | Chair, President and CEO | Sell | 4,558 | 134.05 | 610,990 |
| Aug 21, 2026 | Graziosi David S. | Chair, President and CEO | Sell | 9,050 | 133.21 | 1,205,565 |
| Aug 21, 2026 | Graziosi David S. | Chair, President and CEO | Sell | 13,100 | 132.44 | 1,734,914 |
| Aug 21, 2026 | Graziosi David S. | Chair, President and CEO | Other | 26,708 | 38.11 | 1,017,842 |
| Aug 11, 2026 | Scroggins Eric C. | CLO & Asst. Secretary | Sell | 1,050 | 125.00 | 131,250 |
| Aug 10, 2026 | Bohley G Frederick | See Remarks | Sell | 3,961 | 122.38 | 484,748 |
| Aug 10, 2026 | Bohley G Frederick | See Remarks | Other | 3,961 | 37.11 | 146,993 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.