Every Form 4 that Sera Prognostics, Inc. (SERA) 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 SERA 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 SERA filings page.
Sera Prognostics, Inc. disclosed that its Chief Executive Officer and director reported a sale of Class A common stock under a Form 4 filing. On 12/09/2025, the reporting person sold 28,215 shares of Class A common stock in a transaction coded "S" at a weighted average price of $3.04 per share. After this transaction, the executive beneficially owned 768,081 shares directly.
The company explains that the shares were sold solely to cover tax withholding obligations arising from the vesting of restricted stock units. The sale was carried out under the issuer’s election to satisfy tax obligations through mandated “sell to cover” transactions, meaning it was not a discretionary trade by the executive. The price reflects a block trade executed in multiple transactions at prices between $2.91 and $3.10 per share.
Sera Prognostics, Inc. director reported an open-market sale of company stock. On 12/08/2025, the reporting person sold 1,560 shares of Class A Common Stock at a weighted average price of $3.05 per share, with individual trade prices ranging from $2.99 to $3.11. The sale was made under a Rule 10b5-1 trading plan that the insider adopted on June 10, 2025. After this transaction, the insider beneficially owns 19,593 shares of Sera Prognostics common stock in direct form.
Sera Prognostics (SERA) reported an insider transaction by its Chief Executive Officer and Director. On 11/10/2025, the reporting person sold 11,594 shares of Class A common stock at a weighted average price of $2.62. The filing states the sale was executed to cover tax withholding obligations tied to the vesting of RSUs and was not a discretionary trade. The shares were sold via a block trade within a price range of $2.30–$3.04. Following the transaction, the insider beneficially owns 796,296 shares.
Sera Prognostics (SERA) insider transaction: the company’s Chief Data Officer reported a sell-to-cover trade tied to RSU vesting. On 11/10/2025, 7,073 shares of Class A common stock were sold to satisfy tax withholding, a non-discretionary transaction under the issuer’s “sell to cover” election.
The sale executed at a $2.62 weighted average price within a $2.30–$2.62 range. Following the transaction, the reporting person beneficially owns 168,596 shares, held directly.
Sera Prognostics (SERA): Form 4 insider transaction. The company’s General Counsel reported the sale of 7,059 shares of Class A common stock on 11/10/2025 at a weighted average price of $2.62. The filing states the shares were sold to satisfy tax withholding obligations tied to RSU vesting under a mandated “sell to cover,” indicating it was not a discretionary trade. Following the transaction, the insider directly beneficially owns 119,758 shares. The sale was executed as a block trade with prices ranging from $2.30 to $3.04.
Sera Prognostics (SERA) reported an insider transaction by its Chief Information Officer. On 11/10/2025, the officer sold 6,528 Class A common shares in a mandated “sell to cover” to satisfy tax withholding triggered by RSU vesting. The transaction is noted as non‑discretionary under the company’s election.
The shares were sold at a weighted average price of $2.62, with individual trades ranging from $2.30 to $3.04. Following the transaction, the reporting person beneficially owns 89,404 shares, held directly.
Sera Prognostics (SERA) insider transaction: the company’s Chief Scientific Officer reported a sale of 7,767 shares of Class A common stock on 11/10/2025 at a weighted average price of $2.62. The filing states the sale was made to cover tax withholding upon RSU vesting under a mandated “sell to cover” arrangement.
Following the transaction, the reporting person beneficially owned 151,726 shares, held directly. The block trade occurred across prices ranging from $2.30 to $3.04.
Sera Prognostics (SERA) disclosed an insider transaction by its Chief Financial Officer. On 11/10/2025, the officer sold 6,351 shares of Class A common stock at a weighted average price of $2.62 to cover tax withholding tied to RSU vesting, as required by the issuer’s sell-to-cover policy. The block trade occurred across multiple transactions priced between $2.30 and $3.04. After the sale, the officer beneficially owns 278,319 shares, held directly.
Sera Prognostics (SERA) filed a Form 4 reporting a routine sell-to-cover. On 11/05/2025, a director sold 221 shares of Class A common stock at a $3.04 weighted average price to satisfy tax withholding from vested RSUs. The filing notes the sale was mandated by the issuer’s “sell to cover” election and was not a discretionary trade by the insider. Following the transaction, the reporting person beneficially owns 58,032 shares, held directly. The shares were sold in multiple trades between $3.03 and $3.05.
Sera Prognostics (SERA) reported a Form 4 for its Chief Information Officer, who sold 2,000 shares of Class A common stock on 11/04/2025 at a weighted average price of $3.07.
The sale was effected under a Rule 10b5-1 trading plan adopted on May 21, 2025, with trade prices ranging from $3.02 to $3.15. Following the transaction, the officer beneficially owns 95,932 shares, held directly.
Sera Prognostics (SERA) filed a Form 4 reporting equity awards to its Chief Medical Officer. On 10/15/2025, the officer acquired 75,000 shares of Class A Common Stock represented by RSUs at a price of $0, bringing beneficial ownership of these shares to 75,000, held directly.
The filing also reports a stock option grant for 107,000 shares at an exercise price of $3.13, expiring on 10/15/2035, with 107,000 derivative securities beneficially owned directly. The RSUs vest over four years: 25% on the first anniversary of the vesting commencement date, which is October 10, 2025, then 1/12 of the remainder in quarterly installments for three years thereafter. The options vest over four years: 25% on the first anniversary of the vesting commencement date, which is October 10, 2025, then 1/36 of the remainder in monthly installments for three years thereafter.
Harrison Robert Gardner, Chief Information Officer of SERA Prognostics, Inc. (SERA), reported a planned sale of 2,000 shares of Class A common stock executed on 10/07/2025 under a Rule 10b5-1 trading plan adopted on 05/21/2025. The shares were sold in multiple transactions at prices ranging from $3.04 to $3.28, with a reported weighted average price of $3.18. After this disposition, the reporting person beneficially owns 97,932 shares directly. The form is signed by an attorney-in-fact and notes that detailed per-trade information is available on request.
Director sale to cover RSU taxes: A director, Mirza Mansoor Raza, reported on 10/06/2025 the disposition of 227 shares of Class A common stock via a sell-to-cover transaction to satisfy tax withholding on vested restricted stock units. The reported weighted-average sale price was $3.16, with execution prices ranging from $3.15 to $3.20. After the transaction the reporting person beneficially owned 58,253 shares directly. The filing states the sale was mandated by the issuer's tax-withholding election and was not a discretionary trade by the director.