Hyliion Holdings Corp.
Ownership
Ownership Structure
Who owns Hyliion Holdings Corp. (HYLN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 69.8% of the shares are freely tradable; institutional investors hold 25.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 6.41 | 11,456,703 | +28.9 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.11 | 5,552,175 | -1.1 | 06/30/2026 |
| GE Aerospace | 3.08 | 5,500,000 | +0.0 | 09/30/2026 |
| D. E. Shaw & Co LP | 2.18 | 3,899,804 | +164.2 | 06/30/2026 |
| Geode Capital Management, LLC | 1.85 | 3,302,421 | +7.2 | 06/30/2026 |
| State Street Corp | 1.60 | 2,858,821 | -4.9 | 06/30/2026 |
| Amvescap Plc. | 1.33 | 2,378,173 | -36.2 | 06/30/2026 |
| Millennium Management LLC | 1.07 | 1,904,750 | +36.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.21 | 3,939,397 | +0.0 | 09/30/2026 |
| iShares Russell 2000 ETF | 1.83 | 3,276,869 | -0.4 | 10/29/2026 |
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 |
|---|---|---|---|---|---|
| Healy Thomas J. | Chief Executive Officer | 33,206,711 | 109,582,146 $ | Sep 30, 2026 | direct |
| Mook Joshua T. | Chief Technology Officer | 1,223,928 | 4,038,962 $ | Sep 30, 2026 | direct |
| Cubbage Vincent T. | Director | 1,125,613 | 3,714,523 $ | Sep 30, 2026 | direct |
| Panzer Jon | Chief Financial Officer | 1,070,147 | 3,531,485 $ | Sep 30, 2026 | direct |
| Oxholm Jose Miguel | Chief Legal&Compliance Officer | 873,547 | 2,882,705 $ | Sep 30, 2026 | direct |
| Ramasamy Govindaraj | Chief Commercial Officer | 593,920 | 1,959,936 $ | Aug 21, 2026 | direct |
| Standley Greg | Chief Accounting Officer. | 287,751 | 949,578 $ | Sep 30, 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 |
|---|---|---|---|---|---|---|
| Sep 30, 2026 | Standley Greg | Chief Accounting Officer. | Other | 17,550 | 0.00 | – |
| Sep 30, 2026 | Standley Greg | Chief Accounting Officer. | Other | 16,633 | 0.00 | – |
| Sep 30, 2026 | Oxholm Jose Miguel | Chief Legal&Compliance Officer | Other | 71,341 | 0.00 | – |
| Sep 30, 2026 | Oxholm Jose Miguel | Chief Legal&Compliance Officer | Other | 52,392 | 0.00 | – |
| Sep 30, 2026 | Mook Joshua T. | Chief Technology Officer | Other | 71,341 | 0.00 | – |
| Sep 30, 2026 | Mook Joshua T. | Chief Technology Officer | Other | 55,981 | 0.00 | – |
| Sep 30, 2026 | Panzer Jon | Chief Financial Officer | Other | 75,457 | 0.00 | – |
| Sep 30, 2026 | Panzer Jon | Chief Financial Officer | Other | 59,210 | 0.00 | – |
| Sep 30, 2026 | Healy Thomas J. | Chief Executive Officer | Other | 222,256 | 0.00 | – |
| Sep 30, 2026 | Healy Thomas J. | Chief Executive Officer | Other | 202,033 | 0.00 | – |
| Sep 30, 2026 | Cubbage Vincent T. | Director | Other | 5,750 | 0.00 | – |
| Sep 21, 2026 | Oxholm Jose Miguel | Chief Legal&Compliance Officer | Other | 50,000 | 0.00 | – |
| Aug 27, 2026 | Cubbage Vincent T. | Director | Buy | 50,000 | 3.40 | 170,000 |
| Aug 21, 2026 | Healy Thomas J. | Chief Executive Officer | Other | 29,840 | 3.33 | 99,367 |
| Aug 21, 2026 | Ramasamy Govindaraj | Chief Commercial Officer | Other | 6,670 | 3.37 | 22,478 |
| Aug 21, 2026 | Oxholm Jose Miguel | Chief Legal&Compliance Officer | Other | 11,980 | 3.33 | 39,893 |
| Aug 21, 2026 | Mook Joshua T. | Chief Technology Officer | Other | 10,700 | 3.33 | 35,631 |
| Aug 21, 2026 | Panzer Jon | Chief Financial Officer | Other | 13,595 | 3.32 | 45,135 |
| Aug 19, 2026 | Standley Greg | Chief Accounting Officer. | Other | 3,731 | 3.73 | 13,917 |
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: October 30, 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.