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person · Reporting owner

Klein Uwe

Disclosed activity across 1 company

Tapewire entity
67074
SEC CIK
0002040350

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Septerna, Inc.SEPN · Entity 2452SVP, Biological SciencesFebruary 06, 2026February 10, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Septerna, Inc.

Report date February 06, 2026 · Filed February 10, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $25.41 · Expires 2036-02-05Direct80,000 Reported balance After 2026-02-06 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-02-06 · Grant · Acquired 80,000 · Balance 80,000

F1: 2/48th of the shares subject to such option shall vest and become exercisable on March 1, 2026 and the remaining shares subject to the option shall vest in 46 substantially equal monthly installments on each monthly anniversary thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date.

Filing footnotes · ownership attribution and instrument terms

F1: 2/48th of the shares subject to such option shall vest and become exercisable on March 1, 2026 and the remaining shares subject to the option shall vest in 46 substantially equal monthly installments on each monthly anniversary thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date.

Transaction history

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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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
February 06, 2026 Filed Feb 10, 2026 19:15 UTC Septerna, Inc. SEPN · Entity 2452 GrantStock Option (Right to Buy) · Derivative 80,000 $0.00 Strike: $25.41 $0.00
Disclosure

SEC source: 0001193125-26-045115 · ownership.xml · derivative · entry 1

Klein Uwe · CIK 0002040350 · SVP, Biological Sciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,000

Underlying: Common Stock · 80,000 shares

Expires 2036-02-05

F1 · derivative.exercise_date: 2/48th of the shares subject to such option shall vest and become exercisable on March 1, 2026 and the remaining shares subject to the option shall vest in 46 substantially equal monthly installments on each monthly anniversary thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date.

Read SEC document
August 18, 2025 Filed Aug 19, 2025 17:02 UTC Septerna, Inc. SEPN · Entity 2452 Exercise / conversionStock Option (Right to Buy) · Derivative 7,621 $0.00 Strike: $6.81 $0.00
Disclosure

SEC source: 0000950170-25-110177 · ownership.xml · derivative · entry 7

Klein Uwe · CIK 0002040350 · SVP, Biological Sciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,027

Underlying: Common Stock · 7,621 shares

Expires 2034-09-22

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 · derivative.exercise_date: 1/48th of the shares subject to such option shall vest and become exercisable in substantially equal monthly installments on each monthly anniversary of October 28, 2024, contingent upon the consummation of the Issuer's initial public offering, and subject to the Reporting Person's continuous service to the Issuer on each such date.

Read SEC document
August 18, 2025 Filed Aug 19, 2025 17:02 UTC Septerna, Inc. SEPN · Entity 2452 Exercise / conversionStock Option (Right to Buy) · Derivative 4,935 $0.00 Strike: $2.76 $0.00
Disclosure

SEC source: 0000950170-25-110177 · ownership.xml · derivative · entry 6

Klein Uwe · CIK 0002040350 · SVP, Biological Sciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,001

Underlying: Common Stock · 4,935 shares

Expires 2034-03-19

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_date: 1/48th of the shares subject to such option shall vest and become exercisable in substantially equal monthly installments on each monthly anniversary of March 1, 2024, subject to the Reporting Person's continuous service to the Issuer on each such date.

Read SEC document
August 18, 2025 Filed Aug 19, 2025 17:02 UTC Septerna, Inc. SEPN · Entity 2452 Exercise / conversionStock Option (Right to Buy) · Derivative 10,452 $0.00 Strike: $2.76 $0.00
Disclosure

SEC source: 0000950170-25-110177 · ownership.xml · derivative · entry 5

Klein Uwe · CIK 0002040350 · SVP, Biological Sciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,453

Underlying: Common Stock · 10,452 shares

Expires 2033-11-11

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.

F2 · derivative.exercise_date: 1/48th of the shares subject to such option shall vest and become exercisable in substantially equal monthly installments on each monthly anniversary of August 1, 2023, subject to the Reporting Person's continuous service to the Issuer on each such date.

Read SEC document
August 18, 2025 Filed Aug 19, 2025 17:02 UTC Septerna, Inc. SEPN · Entity 2452 Exercise / conversionCommon Stock 7,621 $6.81 $51,899.01
Disclosure

SEC source: 0000950170-25-110177 · ownership.xml · nonDerivative · entry 3

Klein Uwe · CIK 0002040350 · SVP, Biological Sciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,008

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.

Read SEC document
August 18, 2025 Filed Aug 19, 2025 17:02 UTC Septerna, Inc. SEPN · Entity 2452 Exercise / conversionCommon Stock 4,935 $2.76 $13,620.60
Disclosure

SEC source: 0000950170-25-110177 · ownership.xml · nonDerivative · entry 2

Klein Uwe · CIK 0002040350 · SVP, Biological Sciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,387

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.

Read SEC document
August 18, 2025 Filed Aug 19, 2025 17:02 UTC Septerna, Inc. SEPN · Entity 2452 Exercise / conversionCommon Stock 10,452 $2.76 $28,847.52
Disclosure

SEC source: 0000950170-25-110177 · ownership.xml · nonDerivative · entry 1

Klein Uwe · CIK 0002040350 · SVP, Biological Sciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,452

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.

Read SEC document
August 07, 2025 Filed Aug 11, 2025 19:01 UTC Septerna, Inc. SEPN · Entity 2452 GrantStock Option (Right to Buy) · Derivative 30,000 $0.00 Strike: $11.70 $0.00
Disclosure

SEC source: 0000950170-25-106790 · ownership.xml · derivative · entry 1

Klein Uwe · CIK 0002040350 · SVP, Biological Sciences

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Common Stock · 30,000 shares

Expires 2025-08-06

F1 · derivative.exercise_date: 1/48th of the shares subject to such option shall vest and become exercisable in substantially equal monthly installments on each monthly anniversary of August 1, 2025, subject to the Reporting Person's continuous service to the Issuer on each such date.

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.