Every Form 4 that Ouster, Inc. (OUST) 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 OUST 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 OUST filings page.
Ouster, Inc. (OUST) reported that its General Counsel and Secretary, Megan Chung, sold 11,484 shares of common stock on September 14, 2026, in an open-market transaction with a weighted average price of $33.9597 per share. The sale was executed under a Rule 10b5-1 “sale to cover” instruction to satisfy withholding taxes upon vesting of restricted stock units, and she now holds 189,291 shares directly.
Ouster, Inc. (OUST) reported that Chief Operating Officer Darien Spencer sold 12,808 shares of common stock on September 14, 2026. The filing states these shares were sold to cover withholding taxes upon the vesting and settlement of restricted stock units under a Rule 10b5-1 sale-to-cover instruction dated August 19, 2025. After this tax-related sale, Spencer directly held 286,998.5 shares of Ouster common stock.
Ouster, Inc. (OUST) reported that President and CEO Charles Angus Pacala sold 30,385 shares of common stock on September 14, 2026 at a weighted average price of $33.9591 per share. The filing states these shares were sold to cover withholding taxes from vesting restricted stock units pursuant to a Rule 10b5-1 sale-to-cover instruction. Following this tax-related sale, Pacala directly holds 1,041,816 shares of Ouster common stock.
Ouster, Inc. (OUST) reported that Chief Revenue Officer Cyrille Jacquemet sold 8,896 shares of common stock on September 14, 2026 at a weighted average price of $33.9583 per share. The company states the shares were sold to cover withholding taxes from vested restricted stock units, leaving 105,538.5 shares held directly.
Ouster, Inc. (OUST) reported that its Chief Financial Officer, Kenneth P. Gianella, sold 15,686 shares of common stock on September 14, 2026. The sale was made to cover withholding taxes upon vesting and settlement of restricted stock units and was executed pursuant to a Rule 10b5-1 sale to cover instruction letter dated August 20, 2025. After this transaction, he held 245,328 shares directly.
Ouster, Inc. (OUST) insider Mark Frichtl, Chief Technology Officer, reported selling 18,778 shares of common stock on September 14, 2026 at a weighted average price of $33.9595 per share. The sale was executed to cover withholding taxes from vesting restricted stock units under a Rule 10b5-1 sale-to-cover instruction. After this tax-related sale, Frichtl directly holds 318,987 shares of Ouster common stock.
Ouster, Inc. (OUST) reported that its General Counsel and Secretary, Megan Chung, made a bona fide gift of 2,084 shares of common stock on September 9, 2026. After the gift, she directly holds 200,775 shares of Ouster common stock.
Ouster, Inc. insider Mark Frichtl, Chief Technology Officer, reported a bona fide gift of 38,745 shares of Ouster common stock on September 2, 2026. After this gift, he continues to hold 337,765 shares of common stock directly. No Rule 10b5-1 trading plan is reported for this transaction.
Ouster, Inc. (OUST) reported that Chief Technology Officer Mark Frichtl exercised 100,000 incentive stock options on August 26, 2026 at an exercise price of $14.22 per share, receiving 100,000 shares of common stock. Following the transactions, he holds 376,510 common shares directly and 100,713 incentive stock options remain outstanding. The shares received upon exercise are subject to a lock-up period through August 31, 2026. The options exercised were fully vested and exercisable.
Ouster, Inc. (OUST) reported that Chief Financial Officer Kenneth P. Gianella sold a total of 40,000 shares of common stock on August 18, 2026 in four open-market transactions at weighted average prices between $44.65 and $47.09. The sales were executed pursuant to a Rule 10b5-1 plan dated May 19, 2026, and each reported price reflects a weighted average of multiple trades within disclosed intraday price ranges. Post-transaction share holdings are not reported in this filing.
Ouster, Inc. director Stephen A. Skaggs reported selling a total of 5,000 shares of common stock in two transactions on August 5 and 6, 2026, at prices reported as $46.48 and a weighted average of $45.18 per share. These sales were executed under a Rule 10b5-1 plan dated September 8, 2025, with the August 6 trades occurring in a price range from $45.18 to $45.21.
Ouster, Inc. Chief Operating Officer Spencer Darien sold 30,000 shares of common stock on August 4, 2026 at $45.00 per share in an open-market or private transaction. The sale was made under a Rule 10b5-1 plan dated November 18, 2025, leaving 299,806.5 shares held directly.
Heystee Susan reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc. director Susan Heystee received a stock grant as part of her board compensation. She was awarded 660 shares of common stock at a reference price of $49.83 per share, received in lieu of cash fees under the company’s non-employee director compensation program, bringing her direct holdings to 40,478.7 shares.
SKAGGS STEPHEN A reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc. director Stephen A. Skaggs received a grant of 4,725 shares of common stock in the form of restricted stock units. The RSUs carry no purchase price and will vest in quarterly installments through the earlier of June 17, 2027 or the company’s next annual stockholders’ meeting, contingent on his continued service. Following this award, he directly holds 66,415 shares.
Eyler Phillip reported acquisition or exercise transactions in this Form 4 filing.
Ouster director Phillip Eyler reported receiving a grant of 4,725 shares of common stock as a stock-based award, with no cash paid per share. After this equity grant, his direct holdings increased to 20,383 Ouster shares.
The award consists of Ouster restricted stock units (RSUs), each representing one share of common stock. The RSUs vest in quarterly installments through the earlier of June 17, 2027 or the company’s 2027 annual stockholder meeting, as long as he continues serving the company. All vested RSUs will be settled in shares upon the earlier of a change in control or his separation from service.
MADDOCK ERNEST E reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc. director Ernest E. Maddock received a grant of 4,725 shares of common stock on June 17, 2026, reported as a compensation-related award at no purchase price. Following this grant, his direct holdings increased to 88,902 shares of Ouster common stock.
The award represents restricted stock units, each giving a right to one share of common stock. These units vest in quarterly installments through the earlier of June 17, 2027 or Ouster’s next annual meeting of stockholders, as long as Maddock continues to serve the company.
Ouster director Ted L. Tewksbury III reported both an equity grant and a small share sale. On June 17, 2026, he acquired 4,725 shares of common stock at $0 as a grant tied to restricted stock units that vest quarterly through the earlier of June 17, 2027 or the 2027 annual meeting, subject to continued service. On June 22, 2026, he sold 1,695 shares of common stock at $47.00 per share in an open-market transaction under a pre-arranged Rule 10b5-1 plan that includes tax planning sales. Following these transactions, he directly holds 124,999 shares of Ouster common stock.
Heystee Susan reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc. director Susan Heystee reported an equity compensation grant of 4,725 restricted stock units (RSUs) of common stock. Each RSU represents a right to receive one share of Ouster common stock at no purchase price. The RSUs vest in quarterly installments through the earlier of June 17, 2027 or Ouster’s next annual meeting of stockholders, subject to her continued service. Following this grant, Heystee directly holds 39,818.7 shares of common stock, reflecting a routine, compensation-related increase in her equity position rather than an open-market trade.
Correia Christina reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc. director Christina Correia received an equity award of 4,725 restricted stock units (RSUs) on common stock. The RSUs vest in quarterly installments through the earlier of June 17, 2027 or Ouster’s next annual stockholder meeting, as long as she continues in service. After this grant, she directly holds 76,415 shares of Ouster common stock, so the award reflects a routine, compensation-related increase rather than an open-market purchase.
Ouster, Inc.’s Chief Financial Officer Kenneth P. Gianella reported an open-market sale of 54,337 shares of Common Stock. The shares were sold on June 12, 2026 at a weighted average price of $38.823 per share.
According to the filing, the sale was made to cover withholding taxes incurred upon the vesting and settlement of restricted stock units, pursuant to a Rule 10b5-1 sale-to-cover instruction letter dated August 20, 2025. After this transaction, Gianella directly holds 301,014 Ouster shares.
Ouster, Inc. President and CEO Charles Angus Pacala reported an open-market sale of 29,797 shares of common stock at a weighted average price of $38.823 per share. According to the footnotes, these shares were sold to cover withholding taxes due on recently vested restricted stock units under a Rule 10b5-1 “sale to cover” instruction.
After the transaction, Pacala directly holds 1,072,201 shares of Ouster common stock, which includes 2,962 shares acquired on May 15, 2026 through the company’s Amended and Restated 2022 Employee Stock Purchase Plan.
Ouster, Inc. Chief Revenue Officer Cyrille Jacquemet reported an open-market sale of 8,723 shares of common stock. The shares were sold primarily to cover withholding taxes triggered by the vesting and settlement of restricted stock units, according to the filing footnotes.
Shares were sold at a weighted average price of about $38.82 per share, across multiple trades within a narrow price range. After these transactions, Jacquemet directly holds 114,434.5 Ouster common shares, indicating this was a relatively small, tax-related sale compared with his remaining stake.
Ouster, Inc. Chief Operating Officer Darien Spencer reported a sale of 12,559 shares of common stock. The shares were sold at a weighted average price of about $38.82 to $39.54 per share.
According to the disclosure, the sale was made solely to cover withholding taxes incurred when restricted stock units vested and settled, and it was executed pursuant to a Rule 10b5-1 sale-to-cover instruction letter. After this tax-related transaction, Spencer directly holds 329,806.5 shares of Ouster common stock.
Ouster, Inc. General Counsel and Secretary Megan Chung reported an open-market sale of 11,261 shares of common stock at a weighted average price of $38.823 per share on June 12, 2026. The shares were sold to cover withholding taxes incurred upon the vesting and settlement of restricted stock units pursuant to a Rule 10b5-1 sale-to-cover instruction letter.
After this transaction, Chung directly holds 202,859 shares of Ouster common stock, which include 284 shares acquired on May 15, 2026 through the company’s Amended and Restated 2022 Employee Stock Purchase Plan.
Ouster, Inc. Chief Technology Officer Mark Frichtl reported an open-market sale of 18,414 shares of common stock on June 12, 2026 at a weighted average price of $38.823 per share.
According to the footnotes, these shares were sold specifically to cover withholding taxes triggered by the vesting and settlement of restricted stock units, under a pre-arranged Rule 10b5-1 sale-to-cover instruction letter dated June 9, 2025.
After this tax-related sale, Frichtl directly holds 276,510 shares of Ouster common stock.
Ouster, Inc. Chief Revenue Officer Cyrille Jacquemet reported an open-market sale of 9,433 shares of Common Stock at $40.00 per share. The transaction was executed pursuant to a pre-arranged Rule 10b5-1 plan dated June 13, 2025, indicating it was scheduled in advance. Following this sale, Jacquemet continues to hold 123,157.5 shares directly, so the trade reflects only a portion of his overall stake.
Ouster, Inc. Chief Technology Officer Mark Frichtl reported a combination of option exercise and open-market share sales in the company’s common stock. On May 22, 2026, he exercised 50,063 non-qualified stock options at an exercise price of $14.22 per share, converting them into common stock.
Across May 22 and May 26, 2026, he then sold an aggregate of 384,426 shares of common stock in a series of open-market transactions at weighted-average prices generally ranging from about $36.00 to $45.00 per share. The filing states these sales were made pursuant to a pre-arranged Rule 10b5-1 trading plan dated December 15, 2025.
After these transactions, Frichtl directly held 294,924 shares of Ouster common stock, including 649 shares acquired on May 15, 2026 under the company’s Amended and Restated 2022 Employee Stock Purchase Plan. The options exercised in this transaction are described as fully vested and exercisable.
Ouster, Inc. Chief Operating Officer Darien Spencer reported an open-market sale of 30,000.5 shares of common stock on May 26, 2026 at a weighted average price of $45.00 per share. The sale was made pursuant to a pre-established Rule 10b5-1 trading plan dated November 18, 2025, indicating it was pre-scheduled rather than discretionary.
After this transaction, Spencer directly holds 342,365.5 shares of Ouster common stock. This balance includes 991 shares acquired on May 15, 2026 through the company’s Amended and Restated 2022 Employee Stock Purchase Plan, so he retains a substantial equity stake following the sale.
Ouster, Inc. director Susan Heystee reported an open-market sale of Common Stock. She sold 9,316 shares on May 21, 2026 at an average price of $34.805 per share. After this transaction, she directly holds 35,093.7 shares of Ouster common stock.
Ouster, Inc. Chief Revenue Officer Cyrille Jacquemet reported an open-market sale of company stock. On this Form 4, he sold 10,000 shares of Ouster common stock at a price of $35.00 per share. The transaction was executed as an open-market sale.
After this sale, Jacquemet directly holds 132,590.5 shares of Ouster common stock, which includes 616 shares acquired on May 15, 2026 through the company’s Amended and Restated 2022 Employee Stock Purchase Plan. The filing notes that the sale was conducted under a pre-arranged Rule 10b5-1 trading plan.
Ouster, Inc. Chief Technology Officer Mark Frichtl reported a series of exercise-and-sell transactions in May 2026. Over May 13–15, he sold a total of 180,750 shares of common stock in open-market trades at prices generally between $31.00 and $36.02, pursuant to a Rule 10b5-1 plan dated December 15, 2025.
To support these sales, he exercised stock options covering 97,091 shares of common stock at exercise prices of $2.13 and $14.22 per share. Following the transactions, he holds 628,638 shares of common stock directly.
Ouster, Inc. director Virginia Boulet reported buying additional common stock in open-market transactions. On May 11, 2026, she purchased a total of 1,658 shares of Ouster common stock in two trades at prices of $25.16 and $25.35 per share. Following these purchases, Boulet directly holds 230,000 shares of Ouster common stock.
Ouster, Inc. director Stephen A. Skaggs sold 5,000 shares of Common Stock in an open-market transaction at $30.00 per share. The sale occurred on May 5, 2026 and was made pursuant to a pre-arranged Rule 10b5-1 trading plan dated September 8, 2025.
After this transaction, Skaggs directly holds 61,690 Ouster shares, so the sale represents only a portion of his overall position rather than a full exit.
Ouster, Inc. Chief Technology Officer Mark Frichtl reported an exercise-and-sell transaction involving company stock. He exercised options to acquire 34,600 shares of Common Stock at about $2.13 per share, then sold the same 34,600 shares in open‑market trades at prices around $30 per share.
The sales were made pursuant to a pre‑arranged Rule 10b5‑1 trading plan dated December 15, 2025, indicating they were scheduled in advance. After these transactions, he holds 712,297 Common Shares directly and 31,434 Non‑Qualified Stock Options that are fully vested and exercisable.
Ouster, Inc. Chief Technology Officer Mark Frichtl reported an option exercise and related share sale. He exercised non-qualified stock options for 400 shares of common stock at $2.13 per share, then sold 400 shares at $30.00 per share.
The filing shows the sale was made pursuant to a Rule 10b5-1 trading plan dated December 15, 2025, indicating it was pre-scheduled. After these transactions, he directly holds 712,297 shares of common stock and 66,034 stock options that are fully vested and exercisable, with the exercised option series expiring on October 1, 2030.
Ouster, Inc. director Stephen A. Skaggs sold 5,000 shares of Common Stock in an open-market transaction at $28.00 per share. After this sale, he directly holds 66,690 shares. The transaction was executed pursuant to a pre-arranged Rule 10b5-1 trading plan dated September 8, 2025.
Ouster, Inc. Chief Technology Officer Mark Frichtl executed an exercise-and-sell transaction in company stock. On April 20 and 21, 2026, he exercised options to acquire a total of 120,000 shares of Ouster common stock at an exercise price of $2.13 per share and sold 120,000 shares in open-market transactions.
The sales were made at weighted average prices ranging from about $26.08 to $29.02 per share, with individual trades occurring within price ranges from $26.00 to $29.25. These sales were conducted under a pre-arranged Rule 10b5-1 trading plan dated December 15, 2025, indicating they were scheduled in advance rather than timed discretionarily.
After these transactions, Frichtl directly holds 712,297 shares of Ouster common stock, reflecting that he retained a substantial equity stake in the company following the option exercises and related sales.
Ouster, Inc. Chief Technology Officer Mark Frichtl exercised and sold shares in a planned transaction. On April 17, 2026, he exercised a non-qualified stock option to acquire 30,000 shares of common stock at $2.13 per share, from options that were fully vested and exercisable.
He then sold 30,000 common shares in open-market transactions at a weighted average price of $25.1465 per share, pursuant to a Rule 10b5-1 trading plan dated December 15, 2025. After these transactions, he directly holds 712,297 common shares of Ouster.
Ouster, Inc. General Counsel and Secretary Megan Chung completed an open-market sale of 5,837 shares of common stock at $24.70 per share on April 16, 2026. A footnote states the sale was made primarily for tax planning purposes.
Following this transaction, Chung continues to hold 213,836 shares of Ouster common stock directly, indicating she retained the vast majority of her position.
Ouster, Inc. Chief Technology Officer Mark Frichtl exercised stock options and sold shares in pre-planned transactions. On April 14–15, he exercised options for 60,000 shares of common stock at an exercise price of $2.13 per share and received common shares.
Over the same dates, he sold 60,000 common shares in open‑market trades at weighted average prices of $22.7562 and $24.00 per share, pursuant to a Rule 10b5-1 plan dated December 15, 2025 that includes sales for tax planning purposes. After these transactions, he directly holds 712,297 shares of Ouster common stock.
SPENCER DARIEN reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc.’s Chief Operating Officer Darien Spencer received an equity award of 46,125 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Ouster common stock at no purchase price.
The RSUs vest in equal quarterly installments, with 1/12 of the total units vesting on each quarterly anniversary of March 11, 2026, as long as Spencer remains in service through each vesting date. Following this grant, he holds 371,375 shares of common stock directly, including the shares underlying these RSUs. The RSUs have no expiration date and reflect compensation rather than an open-market stock purchase.
Pacala Charles Angus reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc. President and CEO Charles Angus Pacala received an equity grant of 138,376 restricted stock units (RSUs). Each RSU represents one share of common stock and vests in 12 equal quarterly installments starting on March 11, 2026, contingent on continued service. Following this award, he directly holds 1,099,036 shares of common stock, highlighting a significant portion of compensation tied to future company performance rather than cash.
Ouster, Inc. Chief Financial Officer Kenneth P. Gianella reported an acquisition of 55,351 restricted stock units of common stock as a compensation award. Each RSU equals one share and vests in 12 equal quarterly installments starting from March 11, 2026, contingent on continued service, bringing his direct holdings to 355,351 shares.
Ouster, Inc. reported that its General Counsel and Secretary, Megan Chung, acquired 46,125 shares of common stock through a grant of restricted stock units (RSUs). Each RSU represents a right to receive one share of common stock, bringing her direct holdings to 219,673 shares after this award.
The RSUs vest in equal installments, with 1/12 of the total vesting on each quarterly anniversary of March 11, 2026, as long as she continues serving the company on each vesting date. The RSUs do not have an expiration date, indicating a long-term, service-based compensation structure rather than an open-market purchase or sale.
Frichtl Mark reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc. Chief Technology Officer Mark Frichtl received a grant of 75,415 restricted stock units of common stock as equity compensation. The RSUs vest in 12 equal quarterly installments beginning on March 11, 2026, contingent on his continued service. Following this award, he holds 712,297 shares of common stock directly.
Heystee Susan reported acquisition or exercise transactions in this Form 4 filing.
Ouster, Inc. director Susan Heystee received 1,458 shares of Common Stock as a compensation award. The shares were granted on April 6, 2026 in lieu of cash fees under the company’s Third Amended and Restated Non-Employee Director Compensation Program. After this award, she directly holds 44,409.7 shares of Ouster common stock, indicating this is a relatively small, routine equity-based compensation grant rather than an open-market trade.
Ouster, Inc. Chief Technology Officer Mark Frichtl exercised stock options and sold shares in a pre-planned transaction. On March 25, 2026, he exercised 40,000 non-qualified stock options at an exercise price of $2.13 per share, receiving 40,000 shares of common stock.
That same day, he sold 40,000 common shares at a weighted-average price of $20.9394 per share in open-market transactions pursuant to a Rule 10b5-1 plan dated December 15, 2025, which the footnotes state included sales for tax planning purposes. After these transactions, he directly owned 636,882 common shares. The footnotes also note the options were fully vested and that the sale prices ranged from $20.53 to $21.30.
Ouster, Inc. director Ted L. Tewksbury III reported an open-market sale of 1,695 shares of common stock at $20.00 per share on March 19, 2026. After this transaction, he directly owns 121,969 shares of Ouster common stock.
According to a footnote, the sale was made under a pre-arranged Rule 10b5-1 trading plan dated August 12, 2025 and includes activity for tax planning purposes. The transaction represents a relatively small portion of his overall reported holdings.
Ouster, Inc. Chief Operating Officer Darien Spencer reported an open-market sale of 10,938 shares of common stock on March 12, 2026 at a weighted average price of $23.4328 per share. According to the disclosure, the shares were sold to cover withholding taxes triggered by the vesting and settlement of restricted stock units, under a Rule 10b5-1 “sale to cover” instruction dated August 19, 2025. Following this tax-related sale, Spencer directly holds 325,250 shares of Ouster common stock.
Ouster, Inc. Chief Technology Officer Mark Frichtl reported an open-market sale of 15,689 shares of common stock on March 12, 2026 at a weighted average price of $23.4328 per share. According to the footnotes, the shares were sold to cover withholding taxes upon the vesting and settlement of restricted stock units pursuant to a Rule 10b5-1 sale-to-cover instruction letter dated June 9, 2025. Following this tax-related sale, Frichtl directly holds 636,882 shares of Ouster common stock.