Every Form 4 that Hyliion Holdings Corp. (HYLN) has filed with the SEC in the last 12 months is listed below, 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. (HYLN) director Vincent T. Cubbage reported an open-market purchase of 50,000 shares of common stock on 2026-08-27 at $3.40 per share. Following this transaction, he directly holds 1,131,363 shares of Hyliion common stock.
Hyliion Holdings Corp. (HYLN) reported that Chief Executive Officer and 10% owner Thomas J. Healy had 29,840 shares of common stock treated as a disposition on 2026-08-21 at $3.33 per share under transaction code J. According to the award agreement, these shares were sold at the direction of the issuer solely to cover Healy’s tax withholding obligations, and his directly held stake after the transaction was 32,782,422 shares.
Hyliion Holdings Corp. (HYLN) reported an insider transaction by Chief Commercial Officer Ramasamy Govindaraj. On 2026-08-21, he disposed of 6,670 shares of common stock at $3.37 per share. According to the award agreement, these shares were sold at the issuer’s direction to cover his tax withholding obligations. Following this transaction, he directly holds 593,920 shares of Hyliion common stock.
Hyliion Holdings Corp. (HYLN) reported an insider equity-related transaction by Chief Legal & Compliance Officer Jose Miguel Oxholm. On 2026-08-21, 11,980 shares of common stock were disposed of at $3.33 per share in a transaction coded "J". According to the award agreement, these shares were sold at the issuer's direction to cover the reporting person's tax withholding obligations, with the decision to sell at the sole discretion of Hyliion. Following this transaction, Oxholm directly holds 799,814 shares of Hyliion common stock.
Hyliion Holdings Corp. (HYLN) reported that Chief Technology Officer Joshua T. Mook disposed of 10,700 shares of common stock on 2026-08-21 at $3.33 per share. According to the award agreement, these shares were sold at the issuer’s direction to cover Mr. Mook’s tax withholding obligations, leaving him with 1,096,606 shares of common stock held directly.
Hyliion Holdings Corp. (HYLN) reported an insider equity transaction by its Chief Financial Officer, Panzer Jon. On 2026-08-21, 13,595 shares of common stock were disposed of at a price of $3.32 per share in a transaction coded as an "other" disposition. According to the applicable award agreement, these shares were sold at the direction of Hyliion to cover the reporting person’s tax withholding obligations, with the decision to sell at the issuer’s sole discretion. Following this transaction, the CFO directly held 935,480 shares of Hyliion common stock.
Hyliion Holdings Corp. (HYLN) reported that officer Greg Standley, Chief Accounting Officer, had an "other" disposition of 3,731 shares of common stock on 2026-08-19 at $3.73 per share. According to the award agreement, these shares were sold at the issuer’s direction solely to cover Standley’s tax withholding obligations, and his directly held stake after the transaction is 253,568 shares. The Rule 10b5-1 checkbox was not marked.
Hyliion Holdings Corp. Chief Executive Officer Thomas J. Healy transferred 2,500,000 shares of Common Stock as a bona fide gift to the TH 2026 Irrevocable Trust dated June 26, 2026. The filing states this was for estate planning purposes and that no payment or other consideration was received.
The trust’s beneficiaries are members of Healy’s family and future descendants. Healy is neither a trustee nor a beneficiary and does not have or share voting or investment power over the trust’s shares. Following the gift, he directly holds 32,812,262 shares of Common Stock.
Hyliion Holdings Corp. director Cubbage Vincent T. transferred 11,500 shares of Common Stock as a bona fide gift to family members. No funds were exchanged and no sale occurred in this transfer. After the gift, he directly holds 1,081,363 shares of Hyliion Common Stock.
Hyliion Holdings Corp. Chief Accounting Officer Greg Standley reported an administrative share transaction. On May 19, 2026, 3,981 shares of common stock were sold at $4.05 per share under the issuer’s award agreement to cover his tax withholding obligations at the issuer’s sole discretion. Following this, he directly holds 257,299 common shares, indicating a routine, tax-related adjustment rather than a discretionary market trade.
Hyliion Holdings Corp.'s Chief Commercial Officer, Ramasamy Govindaraj, had a total of 6,515 shares of common stock sold on his behalf over two days to cover tax withholding obligations tied to equity awards. The shares were sold at the issuer’s direction under an award agreement, not as discretionary market trades. Following these transactions, he directly holds 600,590 shares of Hyliion common stock.
Hyliion Holdings Corp.’s Chief Legal & Compliance Officer Jose Miguel Oxholm reported two issuer-directed transactions in common stock. On May 19, 8,550 shares at $4.06 per share and on May 20, 3,026 shares at $3.92 per share were sold at the issuer’s direction under an award agreement to cover his tax withholding obligations. The footnote explains that the decision to sell shares for taxes is at the sole discretion of the issuer, so these are not discretionary open‑market trades by the insider. After these transactions, Oxholm directly held 811,794 shares of Hyliion common stock.
Hyliion Holdings Corp.’s Chief Technology Officer, Joshua T. Mook, reported two small Form 4 transactions in common stock coded as “other acquisition or disposition.” On May 19 and May 20, a total of 6,803 shares were sold at prices of $4.06 and $3.92 per share. A footnote explains these shares were sold at the direction of the issuer under an award agreement to cover Mr. Mook’s tax withholding obligations, meaning they were mechanistic, compensation-related sales rather than discretionary trading. After these transactions, Mr. Mook directly holds 1,107,306 common shares, so the tax-related sales represent a small portion of his overall stake.
Hyliion Holdings Corp. Chief Financial Officer Jon Panzer reported two non-market transactions in company common stock. On May 19 and May 20, a total of 8,065 shares were sold at prices of $4.06 and $3.92 per share, respectively.
According to the award agreement, these sales were executed at the issuer’s direction solely to cover Panzer’s tax withholding obligations, rather than as discretionary trades. After these transactions, Panzer directly holds 949,075 shares of Hyliion common stock.
Hyliion Holdings Corp. Chief Executive Officer Thomas J. Healy reported two "other" transactions in Hyliion common stock. On May 19 and May 20, a total of 28,026 shares were sold at prices of $4.08 and $3.98 per share.
According to the disclosure, these shares were sold at the direction of Hyliion under the terms of its award agreement with Healy to cover his tax withholding obligations. After these transactions, Healy directly held about 35.3 million shares of Hyliion common stock, indicating the changes were small relative to his overall position.
Hyliion Holdings Corp. reported an insider transaction involving Chief Commercial Officer Ramasamy Govindaraj, where 130 shares of common stock were sold at $2.02 per share. According to the award agreement, the issuer directed this sale to cover the reporting person’s tax withholding obligations, meaning it was a mechanistic, issuer-controlled transaction rather than a discretionary market trade. Following this small adjustment, Govindaraj directly holds 607,105 shares of Hyliion common stock.
Hyliion Holdings Corp. Chief Accounting Officer Greg Standley reported an administrative share transaction involving company common stock. On this event, 7,411 shares of common stock were sold at $2.04 per share to cover his tax withholding obligations under the company’s award agreement. According to the terms described, the decision to sell shares for this purpose was made at the sole discretion of the issuer, not the executive. Following this transaction, Standley directly holds 261,280 shares of Hyliion common stock.
Hyliion Holdings Corp. Chief Commercial Officer Ramasamy Govindaraj reported an issuer-directed sale of 12,758 shares of common stock at $2.04 per share. The shares were sold by the issuer to cover his tax withholding obligations under an award agreement. Following this transaction, he directly holds 607,235 common shares.
Hyliion Holdings Corp. insider Jose Miguel Oxholm, the Chief Legal & Compliance Officer, reported an award-related share transaction. On March 3, 2026, 24,900 shares of common stock were sold at $2.04 per share to cover his tax withholding obligations under an award agreement, at the issuer’s sole discretion. After this transaction, he held 823,370 common shares directly.
Hyliion Holdings Corp. reported an insider transaction involving Chief Technology Officer Joshua T. Mook. On this Form 4, 14,816 shares of common stock were sold at $2.04 per share to cover his tax withholding obligations under an equity award. According to the award agreement, the decision to sell these shares was made at the sole discretion of the issuer. After this transaction, Mook directly owned 1,114,109 shares of Hyliion common stock.
Hyliion Holdings Corp.’s Chief Strategy Officer, Cheri Lantz, reported an issuer-directed tax-related share transaction. On this Form 4, 16,700 shares of common stock were sold at $2.04 per share under the issuer’s award agreement to cover her tax withholding obligations, with the sale decision made solely by the company. After this transaction, she holds 730,204 shares of Hyliion common stock directly.
Hyliion Holdings Corp. reported an insider transaction involving Chief Financial Officer Jon Panzer. On this Form 4, 16,820 shares of common stock were sold at a price of $2.04 per share at the direction of the company to cover his tax withholding obligations under an award agreement. After this transaction, Panzer directly holds 957,140 shares of Hyliion common stock.
Hyliion Holdings Corp. reported a tax-related share transaction involving Chief Executive Officer Thomas J. Healy. A total of 58,202 shares of common stock were sold at $2.05 per share at the direction of the company to cover his tax withholding obligations under an award agreement. Following this transaction, Healy directly owned 35,340,288 shares of Hyliion common stock.
Hyliion Holdings Corp. director Melanie Trent reported an equity award. On February 11, 2026, she acquired 60,976 shares of common stock as a restricted stock unit (RSU) grant under the company’s 2024 Equity Incentive Plan at a reference price of $2.05 per share.
The RSU award will vest on February 11, 2027, meaning the shares become fully earned on that date if vesting conditions are met. After this grant, Trent beneficially owns 218,774 shares of Hyliion common stock in direct ownership.
Hyliion Holdings Corp. director Robert M. Knight Jr. reported acquiring 60,976 shares of common stock on February 11, 2026 through a restricted stock unit award valued at $2.05 per share. Following this equity grant, he directly holds 375,345 common shares. The RSU award will fully vest on February 11, 2027.
Hyliion Holdings Corp. director Mary Gustanski reported an equity award of 60,976 shares of common stock on February 11, 2026. The shares were acquired as a grant of restricted stock units under Hyliion’s 2024 Equity Incentive Plan at a reference price of $2.05 per share.
Following this award, Gustanski’s directly held beneficial ownership increased to 256,379 shares of Hyliion common stock. The restricted stock unit award is scheduled to fully vest on February 11, 2027, meaning the shares become earned and unrestricted on that future date if vesting conditions are met.
Hyliion Holdings Corp. director Richard Joseph Freeland reported an equity award of common stock on Form 4. On February 11, 2026 he acquired 60,976 shares at $2.05 per share as a grant under Hyliion’s 2024 Equity Incentive Plan. These restricted stock units will vest on February 11, 2027, bringing his directly held beneficial ownership to 283,774 shares after the award.
Hyliion Holdings Corp. director Vincent T. Cubbage received an equity grant tied to common stock. On February 11, 2026, he was awarded 60,976 shares of common stock at a grant price of $2.05 per share, reported as an acquisition.
This award represents restricted stock units granted under Hyliion’s 2024 Equity Incentive Plan and will vest on February 11, 2027. Following this grant, Cubbage directly beneficially owns 1,092,863 shares of Hyliion common stock.
Craig Jeffrey A reported acquisition or exercise transactions in this Form 4 filing.
Hyliion Holdings Corp. director Jeffrey A. Craig received an equity grant tied to the company’s common stock. On February 11, 2026, he was awarded 60,976 shares at $2.05 per share through a restricted stock unit grant under Hyliion’s 2024 Equity Incentive Plan. These restricted stock units will vest on February 11, 2027, meaning the shares become fully his on that date if conditions are met. Following this grant, Craig directly beneficially owns 402,845 Hyliion shares.
Hyliion Holdings Corp. director Rodger L. Boehm acquired 60,676 shares of common stock through an equity award. The award was granted on February 11, 2026 at a reference price of $2.05 per share under the company’s 2024 Equity Incentive Plan.
The grant consists of restricted stock units that are scheduled to vest on February 11, 2027. Following this grant, Boehm directly beneficially owns 218,474 shares of Hyliion common stock, reflecting his updated equity position as a company director.
Standley Greg reported acquisition or exercise transactions in this Form 4 filing.
Hyliion Holdings Corp. granted new equity awards to its Chief Accounting Officer, Greg Standley. On February 11, 2026, he received 46,803 shares of common stock as a restricted stock unit award at a reference price of $2.05 per share, bringing his directly held common stock to 268,691 shares after the grant.
One-third of this RSU award will vest on February 11, 2027, with the remaining two-thirds vesting quarterly in equal amounts over the following two years under Hyliion’s 2024 Equity Incentive Plan. He was also granted 70,203 performance stock incentive units, each tied to an equivalent number of common shares, which will vest only if Hyliion’s closing stock price meets thresholds between $4.00 and $7.00 per share over a 90- to 180-day average by December 31, 2028.
Hyliion Holdings Corp. granted equity awards to its Chief Commercial Officer, Govindaraj Ramasamy. On February 11, 2026, he acquired 80,488 shares of common stock at $2.05 per share as a restricted stock unit award, bringing his directly owned common shares to 619,993.
He also received 241,464 performance stock incentive units under the 2024 Equity Incentive Plan. These units relate to an equal number of common shares and have an exercise price of $0. The RSU award vests one-third on February 11, 2027, with the remaining two-thirds vesting quarterly over the following two years.
The performance stock units vest only if Hyliion’s closing stock price meets thresholds ranging from $4.00 to $7.00 per share, measured over a 90 to 180-calendar-day average by December 31, 2028.
Hyliion Holdings Corp. granted equity awards to its Chief Legal & Compliance Officer, Jose Miguel Oxholm. He received 95,122 shares of common stock as a restricted stock unit award valued at $2.05 per share, bringing his directly held common stock to 848,270 shares after the grant.
The RSU award was issued under Hyliion’s 2024 Equity Incentive Plan, with one-third vesting on February 11, 2027 and the remaining two-thirds vesting quarterly in equal amounts over the following two years. He also received 285,366 performance stock incentive units, which can convert into an equal number of common shares if the stock meets closing price targets between $4.00 and $7.00 per share over a 90–180 day average by December 31, 2028.
MOOK JOSHUA T. reported acquisition or exercise transactions in this Form 4 filing.
Hyliion Holdings Corp.'s Chief Technology Officer, Joshua T. Mook, received new equity awards that increase his direct stake in the company. On February 11, 2026, he was granted 95,122 shares of common stock as a restricted stock unit award at a reference price of $2.05 per share, bringing his directly held common shares to 1,128,925.
He also received 285,366 performance stock incentive units, each tied to common stock. These performance units vest by December 31, 2028 only if Hyliion’s closing stock price meets thresholds ranging from $4.00 to $7.00 per share over a 90–180 calendar-day average. One-third of the restricted stock units vests on February 11, 2027, with the remaining two-thirds vesting quarterly in equal amounts over the following two years.
Hyliion Holdings Corp.’s Chief Financial Officer, Jon Panzer, reported equity awards granted on February 11, 2026. He acquired 100,610 shares of common stock at $2.05 per share, increasing his direct common stock holdings to 973,960 shares.
He also received 301,830 performance stock incentive units under the 2024 Equity Incentive Plan. These units can convert into common stock if the company’s closing share price averages between $4.00 and $7.00 over 90–180 days by December 31, 2028. A separate restricted stock unit award vests one-third on February 11, 2027, with the remaining two-thirds vesting quarterly over the following two years.
Healy Thomas J. reported acquisition or exercise transactions in a Form 4 filing for HYLN. The filing lists transactions totaling 1,185,366 shares at a weighted average price of $2.05 per share. Following the reported transactions, holdings were 889,024 shares.
Hyliion Holdings Corp. disclosed that its Chief Legal & Compliance Officer reported a small sale of company stock tied to tax withholding. On 12/17/2025, 2,480 shares of Hyliion common stock were sold at $1.78 per share, coded as an "J" transaction. According to the footnote, the shares were sold at the issuer’s direction under an award agreement to cover the officer’s tax withholding obligations, with the issuer retaining sole discretion over whether to sell shares for this purpose. After this transaction, the officer directly beneficially owned 753,148 shares of Hyliion common stock.
Hyliion Holdings Corp. reported an insider share transaction by its chief accounting officer, Greg Standley. On 12/12/2025, he disposed of 4,010 shares of common stock at $1.94 per share.
According to the disclosure, the shares were sold at the direction of the issuer under an award agreement to cover the reporting person’s tax withholding obligations. After this transaction, Standley directly beneficially owned 221,888 shares of Hyliion common stock.
Hyliion Holdings Corp.'s chief commercial officer, Govindaraj Ramasamy, reported selling 12,949 shares of the company’s common stock at $1.94 per share. The sale on December 12, 2025 was carried out at the direction of the issuer under an award agreement to cover his tax withholding obligations. After this transaction, he beneficially owned 539,505 shares of Hyliion common stock in direct ownership.
Hyliion Holdings Corp. officer Jose Miguel Oxholm, the chief legal & compliance officer, reported selling 23,422 shares of common stock on 12/12/2025 at $1.94 per share. The transaction was coded as type J, and the explanation states that the shares were sold at the issuer's direction under an award agreement to cover the reporting person's tax withholding obligations.
After this sale, Oxholm directly beneficially owns 755,628 Hyliion shares, showing he continues to maintain a significant personal stake in the company.
Hyliion Holdings Corp. Chief Technology Officer Joshua T. Mook reported an insider transaction involving the company’s common stock. On 12/12/2025, 12,949 shares were disposed of at $1.94 per share, leaving 1,033,803 shares beneficially owned afterward in direct form.
The filing explains that these shares were sold at the direction of the issuer under the terms of an award agreement to cover Mook’s tax withholding obligations, with the issuer holding sole discretion over whether to sell shares for this purpose.
Hyliion Holdings Corp. disclosed that its chief strategy officer, Cheri Lantz, reported a company-directed sale of common stock tied to equity compensation. On 12/12/2025, she disposed of 15,646 shares of common stock at $1.94 per share, and now beneficially owns 746,904 shares directly. The shares were sold at the direction of the issuer under an award agreement, which gives the company sole discretion to sell shares to cover her tax withholding obligations. The report was filed by a single reporting person and reflects a routine, compensation-related transaction rather than an open-market discretionary sale.
Hyliion Holdings Corp. chief financial officer Jon Panzer reported selling 16,440 shares of common stock on 12/12/2025 at a price of $1.94 per share. Under the issuer's award agreement with Panzer, these shares were sold at the direction of the issuer to cover his tax withholding obligations.
Following this transaction, Panzer beneficially owns 873,350 shares of Hyliion common stock directly.
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.