Here are the Form 4 insider transactions from Hyliion Holdings Corp. (HYLN) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow HYLN and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full HYLN filings page.
Hyliion Holdings Corp. disclosed that Chief Executive Officer, director and 10% owner Thomas J. Healy reported a sale of 134,963 shares of common stock on 12/12/2025. The transaction price was $1.94 per share, and his directly held beneficial ownership after the sale was 35,102,148 shares.
According to the disclosure, these shares were sold at the direction of the issuer under the terms of an award agreement with the reporting person. Under that agreement, the issuer may decide to sell shares to cover the reporting person’s tax withholding obligations.
Hyliion Holdings Corp. reported a small insider stock sale by its Chief Strategy Officer. On 12/03/2025, the officer disposed of 2,700 shares of common stock at $1.86 per share. The filing explains these shares were sold at the issuer’s direction under an award agreement to cover the officer’s tax withholding obligations, meaning the sale was tied to equity compensation rather than an open-market portfolio decision. After this transaction, the officer beneficially owned 762,550 shares of Hyliion common stock.
Hyliion Holdings Corp. reported a routine insider share withholding by its Chief Financial Officer, Jon Panzer. On 11/28/2025, 2,435 shares of common stock were withheld at a price of $1.88 per share to cover tax obligations arising from the vesting and distribution of restricted stock units. After this tax-related transaction, Panzer beneficially owned 889,790 shares of Hyliion common stock in direct ownership. The filing is a standard Form 4 disclosure required for company insiders.
Hyliion Holdings Corp. reported an insider equity transaction by its Chief Accounting Officer. On 11/27/2025, 519 shares of Hyliion common stock were withheld at a price of $1.85 per share to cover tax liabilities arising from the vesting and distribution of restricted stock units. After this tax withholding, the reporting person directly beneficially owned 225,898 shares of Hyliion common stock. The filing indicates this is a Form 4 filed by one reporting person serving as an officer of the company.
Hyliion Holdings Corp. reported an equity transaction involving its Chief Technology Officer, who is an officer of the company and filed individually. On November 26, 2025, the officer acquired 540,541 shares of common stock at $1.85 per share, recorded as an acquisition of securities. Following this transaction, the officer beneficially owned 1,048,113 shares directly.
The filing explains that this reflects a grant of restricted stock units under Hyliion’s 2024 Equity Incentive Plan. One-fifth of the award will vest on November 26, 2026, one-fifth on November 26, 2027, and three-fifths on November 26, 2028. On November 27, 2025, 1,361 shares were disposed of at $1.85 per share, representing shares withheld to cover tax liabilities related to vesting and distribution, leaving 1,046,752 shares beneficially owned directly.
Hyliion Holdings Corp. insider filing reports a routine tax-related share sale. The company’s Chief Legal & Compliance Officer, Jose Miguel Oxholm, sold 31,105 shares of Hyliion common stock on 11/17/2025 at a price of $1.66 per share. These shares were sold at the direction of the issuer under the terms of an award agreement, which allows the issuer to decide whether to sell shares to cover the officer’s tax withholding obligations.
The filing explains that this sale includes shares used to cover tax withholding for equity awards vesting on August 25, November 13, and November 14, 2025. Due to an administrative error by a third-party service provider, cash was initially used to cover the August 25 tax obligation, and the related share sale could not occur until the next open trading window. As a result, the portion of shares tied to the August 25 vesting was sold on November 17, 2025. After this transaction, the officer beneficially owned 779,050 shares, held directly.
Hyliion Holdings Corp. (HYLN) reported a Form 4 transaction for its Chief Strategy Officer, who sold 25,218 shares of common stock on November 17, 2025 at $1.66 per share. After this sale, the officer directly holds 765,250 common shares.
The filing explains that these shares were sold at the issuer’s direction under an award agreement to cover the officer’s tax withholding obligations tied to vesting dates on August 25, November 13, and November 14, 2025. An administrative error by a third-party service provider led to cash being used for August 25 taxes initially, so the related shares were instead sold on November 17, 2025, the first date in an open trading window when a sale could be completed.
Hyliion Holdings Corp. (HYLN) reported that its Chief Executive Officer, director and 10% owner Thomas J. Healy sold 159,776 shares of common stock on November 17, 2025 at a price of $1.66 per share. After this transaction, he beneficially owned 35,237,111 shares, held directly. According to the disclosure, the sale was made at the direction of the company under an award agreement that allows the issuer to sell shares to cover the reporting person’s tax withholding obligations.
The explanation notes that the sale includes shares sold to cover tax withholding tied to vesting dates on August 25, November 13, and November 14, 2025. Due to an administrative error by a third-party service provider, cash was initially used to satisfy the August 25, 2025 tax obligation, and the related share sale could not occur until the next open trading window, which began on November 17, 2025.
Hyliion Holdings Corp. (HYLN) insider Jose Miguel Oxholm, the company’s Chief Legal & Compliance Officer, filed an amended Form 4 to correct a prior report. The amendment removes an earlier reference to common shares allegedly withheld to cover taxes on a transaction dated 08/25/2025, which the company’s third-party service provider had reported in error.
The filing clarifies that no shares were actually withheld on 08/25/2025, and updates the record to show that Oxholm directly beneficially owns 813,512 shares of common stock following the reported transaction.
Hyliion Holdings Corp. (HYLN) reported an administrative correction to insider ownership reporting rather than a new stock transaction. Chief Strategy Officer Cheri Lantz filed an amended Form 4 to fix an earlier report dated August 25, 2025. The original filing had shown common shares being withheld to cover taxes, using transaction code “F,” but the company now states that no shares were actually withheld on that date due to an administrative error by a third-party service provider. After the correction, Lantz is reported as directly owning 792,997 shares of Hyliion common stock.
Hyliion Holdings Corp. insider Thomas J. Healy, the chief executive officer, director and 10% owner of HYLN, filed an amended Form 4 to correct a prior report for August 25, 2025. The earlier filing had shown shares of common stock withheld to cover taxes, but the company states this was due to an administrative error by its third-party service provider and that no shares were actually withheld on that date. Following the correction, Healy is shown as directly owning 35,396,887 shares of Hyliion common stock.
Hyliion Holdings Corp. Chief Accounting Officer Greg Standley reported an automatic share withholding related to equity compensation. On 11/14/2025, 2,275 shares of Hyliion common stock were disposed of at $1.70 per share under transaction code “F,” which indicates shares were withheld to cover tax liabilities from the vesting and distribution of restricted stock units. After this tax withholding event, Standley beneficially owns 226,417 shares of Hyliion common stock directly.
Hyliion Holdings Corp. (HYLN) Chief Commercial Officer Govindaraj Ramasamy reported automatic share withholding transactions related to equity compensation. On 11/13/2025, 4,110 shares of common stock were withheld at $1.68 per share, and on 11/14/2025, 7,397 shares were withheld at $1.70 per share. These are coded as transaction type “F,” meaning shares were withheld to cover tax liabilities arising from the vesting and distribution of restricted stock units. Following these transactions, the reporting person beneficially owned 552,454 shares of Hyliion common stock, held directly.
Hyliion Holdings Corp. officer reports tax-related share transactions. The company’s Chief Technology Officer reported multiple transactions in Hyliion common stock in mid-November 2025. On November 13, 2025, 4,110 shares were withheld at prices of $1.68 per share, and on November 14, 2025, 7,397 shares were withheld at $1.70 per share, both to cover tax liabilities tied to restricted stock unit vesting. On November 17, 2025, 9,039 shares were sold at $1.66 per share under the issuer’s award agreement to satisfy additional tax withholding obligations. After these transactions, the reporting person held 507,572 shares directly. The filing notes that the November 17 sale also corrected an earlier administrative error by a third-party service provider related to tax withholding for shares that vested on August 25, 2025.
Hyliion Holdings Corp. (HYLN) reported an insider equity update for its Chief Financial Officer, Jon Panzer. On 11/13/2025, 5,226 shares of common stock and on 11/14/2025, 9,406 shares were disposed of at prices of $1.68 and $1.70 per share, respectively. These dispositions were not open-market sales but shares withheld to cover a tax liability arising from the vesting and distribution of restricted stock units.
After these transactions, Panzer directly beneficially owned 892,225 shares of Hyliion common stock. The filing indicates this was a routine tax-related adjustment to his equity holdings, with no derivative securities reported in Table II.
Hyliion Holdings Corp. insider Joshua T. Mook, the company’s Chief Technology Officer, filed an amended Form 4 to correct a previously reported tax-withholding transaction. The earlier filing had shown shares of common stock withheld on August 25, 2025 under transaction code "F" due to an administrative error by the issuer’s third party service provider. The amendment clarifies that no shares were actually withheld on that date and updates Column 5 of Table I. Following the corrected entry, Mook is reported as beneficially owning 529,479 shares of common stock, held directly.
Hyliion Holdings (HYLN) reported an insider transaction by its Chief Accounting Officer. On 11/12/2025, 1,264 shares of common stock were disposed at $1.9 under code “F,” indicating shares withheld to satisfy taxes from restricted stock unit vesting. After this tax-withholding event, the officer beneficially owned 228,692 shares, held directly.
Hyliion Holdings Corp. (HYLN) CFO Jon Panzer filed a Form 4 reporting a routine tax-withholding transaction tied to RSU vesting. On 11/08/2025, 1,704 shares of common stock were withheld under code F at a price of $2.12 per share to satisfy tax obligations. After this event, Panzer beneficially owned 906,857 shares, held directly.