Elizabeth Bhatt - 15 Jul 2026 Form 4 Insider Report for Septerna, Inc. (SEPN)

Reporting relationship: President and COO
Issuer ticker: SEPN
Reported as of: 15 Jul 2026
Net transaction value: -$135,974
SEC form: 4
Accepted by SEC: 17 Jul 2026, 19:00:45 UTC
Prior SEC filing: 17 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Mark A. Wilson, Attorney-in-Fact

Key filing fact

Elizabeth Bhatt filed Form 4 for Septerna, Inc. (SEPN) on 17 Jul 2026.

Key facts

This page summarizes Elizabeth Bhatt's Form 4 filing for Septerna, Inc. (SEPN).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 17 Jul 2026, 19:00.

Change

Previous filing in this sequence was filed on 17 Apr 2026.
Current net transaction value: -$135,974.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001748622 Primary reporting owner

Bhatt Elizabeth

Relationship: President and COO
Address: C/O SEPTERNA, INC., 250 EAST GRAND AVENUE, SOUTH SAN FRANCISCO
Signature: /s/ Mark A. Wilson, Attorney-in-Fact
Signature date: 17 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SEPN transaction

Common Stock

Options Exercise

Transaction value
Shares: +4,000
Change %: +2.3%
Price: $6.81^*
Shares after: 178,209
Date: 15 Jul 2026
Ownership: Direct

SEPN transaction

Common Stock

Sale

Transaction value: $135,974
Shares: -4,000
Change %: -2.2%
Price: $33.99
Shares after: 174,209
Date: 15 Jul 2026
Ownership: Direct
Footnotes: F1, F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SEPN transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -4,000
Change %: -4.7%
Price: $0.000000^*
Shares after: 80,911
Date: 15 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 4,000
Exercise price: $6.81
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

This transaction was effected pursuant to a Rule 10b5-1 sales plan adopted by the Reporting Person on October 20, 2025.

Footnote F2

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $33.49 to $34.24. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

Footnote F3

1/48th of the shares subject to such option vest and become exercisable in substantially equal monthly installments on each monthly anniversary of October 28, 2024, subject to the Reporting Person's continuous service to the Issuer on each such date.