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Nasdaq · USD

SERA

SERA PROGNOSTICS, INC.

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304
SEC CIK
0001534969
Parsed reports
313

Last 12 months

Inside the activity.

0 purchase rows · 52 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202509
Dec 2025013
Jan 202601
Feb 202601
Mar 2026014
Apr 202600
May 202600
Jun 202608
Jul 202600
Aug 202600
Sep 202605
Oct 202601

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
July 19, 2021 Filed Jul 21, 2021 22:01 UTC
Trimble RyanDirector
ConversionSeries B-1 Preferred Stock · Derivative 1,501 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-094518 · tm2122781-2_4seq1.xml · derivative · entry 7

Trimble Ryan · CIK 0001871513 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Trimble Trust

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,501 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: The Issuer's Series B-1 Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $5.20 per share. The Series B-1 Preferred Stock has no expiration date.

F7 · derivative.exercise_date: The shares of preferred stock automatically converted into the Issuer's Class A Common Stock in accordance with the Issuer's Restated Certificate of Incorporation, as amended, immediately upon completion of the Issuer's initial public offering, which became effective on July 19, 2021.

F3 · derivative.expiration_date: The Issuer's Series B-1 Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $5.20 per share. The Series B-1 Preferred Stock has no expiration date.

F2 · ownership.nature: Mr. Trimble is the Trustee for The Trimble Trust and may be deemed to beneficially own the shares held by The Trimble Trust.

Read SEC document
July 19, 2021 Filed Jul 21, 2021 22:01 UTC
Trimble RyanDirector
ConversionSeries A-2 Preferred Stock · Derivative 9,824 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-094518 · tm2122781-2_4seq1.xml · derivative · entry 6

Trimble Ryan · CIK 0001871513 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Trimble Trust

Disclosed balance after: 0

Underlying: Class A Common Stock · 9,824 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: The Issuer's Series A-2 Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $5.20 per share. The Series A-2 Preferred Stock has no expiration date.

F7 · derivative.exercise_date: The shares of preferred stock automatically converted into the Issuer's Class A Common Stock in accordance with the Issuer's Restated Certificate of Incorporation, as amended, immediately upon completion of the Issuer's initial public offering, which became effective on July 19, 2021.

F1 · derivative.expiration_date: The Issuer's Series A-2 Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $5.20 per share. The Series A-2 Preferred Stock has no expiration date.

F2 · ownership.nature: Mr. Trimble is the Trustee for The Trimble Trust and may be deemed to beneficially own the shares held by The Trimble Trust.

Read SEC document
July 19, 2021 Filed Jul 21, 2021 22:01 UTC
Trimble RyanDirector
ConversionClass A Common Stock 35,375 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-21-094518 · tm2122781-2_4seq1.xml · nonDerivative · entry 5

Trimble Ryan · CIK 0001871513 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Trimble Trust

Disclosed balance after: 100,554

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · price: The Issuer's Series D Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $9.02 per share. The Series D Preferred Stock has no expiration date.

F2 · ownership.nature: Mr. Trimble is the Trustee for The Trimble Trust and may be deemed to beneficially own the shares held by The Trimble Trust.

Read SEC document
July 19, 2021 Filed Jul 21, 2021 22:01 UTC
Trimble RyanDirector
ConversionClass A Common Stock 13,335 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-21-094518 · tm2122781-2_4seq1.xml · nonDerivative · entry 4

Trimble Ryan · CIK 0001871513 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Trimble Trust

Disclosed balance after: 65,179

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · price: The Issuer's Series C-1 Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $12.37 per share. The Series C-1 Preferred Stock has no expiration date.

F2 · ownership.nature: Mr. Trimble is the Trustee for The Trimble Trust and may be deemed to beneficially own the shares held by The Trimble Trust.

Read SEC document
July 19, 2021 Filed Jul 21, 2021 22:01 UTC
Trimble RyanDirector
ConversionClass A Common Stock 2,970 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-21-094518 · tm2122781-2_4seq1.xml · nonDerivative · entry 3

Trimble Ryan · CIK 0001871513 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Trimble Trust

Disclosed balance after: 51,844

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: The Issuer's Series B-2 Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $8.32 per share. The Series B-2 Preferred Stock has no expiration date.

F2 · ownership.nature: Mr. Trimble is the Trustee for The Trimble Trust and may be deemed to beneficially own the shares held by The Trimble Trust.

Read SEC document
July 19, 2021 Filed Jul 21, 2021 22:01 UTC
Trimble RyanDirector
ConversionClass A Common Stock 1,501 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-21-094518 · tm2122781-2_4seq1.xml · nonDerivative · entry 2

Trimble Ryan · CIK 0001871513 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Trimble Trust

Disclosed balance after: 48,874

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: The Issuer's Series B-1 Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $5.20 per share. The Series B-1 Preferred Stock has no expiration date.

F2 · ownership.nature: Mr. Trimble is the Trustee for The Trimble Trust and may be deemed to beneficially own the shares held by The Trimble Trust.

Read SEC document
July 19, 2021 Filed Jul 21, 2021 22:01 UTC
Trimble RyanDirector
ConversionClass A Common Stock 9,824 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-21-094518 · tm2122781-2_4seq1.xml · nonDerivative · entry 1

Trimble Ryan · CIK 0001871513 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Trimble Trust

Disclosed balance after: 47,373

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Issuer's Series A-2 Preferred Stock is convertible at the option of a holder at any time into shares of the Issuer's Class A Common Stock at a conversion price, as adjusted to reflect the Issuer's recent 1-for-0.481 reverse stock split, of $5.20 per share. The Series A-2 Preferred Stock has no expiration date.

F2 · ownership.nature: Mr. Trimble is the Trustee for The Trimble Trust and may be deemed to beneficially own the shares held by The Trimble Trust.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.