STOCK TITAN

Septerna (SEPN) president sells 4,000 shares and exercises 4,000 options under plan

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Septerna, Inc. President and COO Elizabeth Bhatt reported transactions in company equity on July 15, 2026. She exercised stock options to acquire 4,000 shares of common stock at $6.81 per share and, pursuant to a Rule 10b5-1 sales plan adopted on October 20, 2025, completed a sale transaction of 4,000 shares of common stock at a weighted average price of $33.9935 per share, with individual sale prices ranging from $33.49 to $34.24. Following these transactions, she directly held 178,209 shares of common stock and 80,911 stock options (right to buy) with an exercise price of $6.81 per share, expiring on September 22, 2034.

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Insider Bhatt Elizabeth
Role President and COO
Sold 4,000 shs ($136K)
Approx. gross sale proceeds $136K
Approx. exercise cost $27K
Approx. pre-tax spread $109K
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 4,000 $0.00 --
Exercise Common Stock 4,000 $6.81 $27K
Sale Common Stock 4,000 $33.9935 $136K
Holdings After Transaction: Stock Option (Right to Buy) — 80,911 shares (Direct); Common Stock — 174,209 shares (Direct)
Footnotes (1)
  1. This transaction was effected pursuant to a Rule 10b5-1 sales plan adopted by the Reporting Person on October 20, 2025. 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. 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.
Shares sold 4,000 shares Common stock sale on 2026-07-15
Weighted average sale price $33.9935 per share Common stock sale on 2026-07-15; prices ranged $33.49–$34.24
Option exercise price $6.81 per share Exercise of 4,000 stock options into common stock on 2026-07-15
Shares owned after transactions 178,209 shares Directly held common stock position following 2026-07-15 transactions
Options remaining after exercise 80,911 options Stock options (right to buy) position after exercising 4,000 options
Option expiration date 2034-09-22 Expiration of stock option grant exercised in part on 2026-07-15
10b5-1 plan adoption date October 20, 2025 Date Bhatt adopted Rule 10b5-1 sales plan governing the reported sale
Rule 10b5-1 sales plan financial
"This transaction was effected pursuant to a Rule 10b5-1 sales plan adopted"
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Stock Option (Right to Buy) financial
"security_title": "Stock Option (Right to Buy)""
monthly installments financial
"vest and become exercisable in substantially equal monthly installments"
Monthly installments are regular, fixed payments made each month to gradually pay off a larger amount, such as a loan or purchase. Think of it like paying for a big item in small, manageable parts instead of all at once. For investors, understanding installment payments helps gauge how debts are structured and how they might affect financial stability or cash flow over time.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What did Septerna (SEPN) executive Elizabeth Bhatt report in this Form 4?

Elizabeth Bhatt reported a sale of 4,000 shares of Septerna common stock and the exercise of 4,000 stock options into common shares, all dated July 15, 2026, with resulting increased direct share ownership after the option exercise.

At what prices did Elizabeth Bhatt trade Septerna (SEPN) shares on July 15, 2026?

Bhatt sold 4,000 shares at a weighted average price of $33.9935 per share, with individual sale prices between $33.49 and $34.24, and exercised stock options to acquire shares at an exercise price of $6.81 per share.

How many Septerna (SEPN) shares does Elizabeth Bhatt hold after these transactions?

After the reported transactions, Bhatt directly holds 178,209 shares of Septerna common stock. She also holds 80,911 stock options (rights to buy common stock) that remain outstanding following the partial option exercise reported in this filing.

Were Elizabeth Bhatt’s Septerna (SEPN) share sales made under a Rule 10b5-1 plan?

Yes. The filing states the sale of 4,000 shares was effected pursuant to a Rule 10b5-1 sales plan adopted by Elizabeth Bhatt on October 20, 2025, indicating the trades were pre-arranged under that trading plan.

What options did Elizabeth Bhatt exercise on Septerna (SEPN) stock?

Bhatt exercised 4,000 stock options with an exercise price of $6.81 per share, converting them into common stock. The underlying option grant vests in substantially equal monthly installments beginning October 28, 2024, and expires on September 22, 2034.

How many Septerna (SEPN) stock options remain after Elizabeth Bhatt’s exercise?

Following the exercise of 4,000 stock options, Bhatt’s remaining reported position in that option grant is 80,911 stock options (rights to buy Septerna common stock) as of the July 15, 2026 transaction date.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Bhatt Elizabeth

(Last)(First)(Middle)
C/O SEPTERNA, INC.
250 EAST GRAND AVENUE

(Street)
SOUTH SAN FRANCISCO CALIFORNIA 94080

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Septerna, Inc. [ SEPN ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
President and COO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock07/15/2026M4,000A$6.81178,209D
Common Stock07/15/2026S(1)4,000D$33.9935(2)174,209D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$6.8107/15/2026M4,000 (3)09/22/2034Common Stock4,000$080,911D
Explanation of Responses:
1. This transaction was effected pursuant to a Rule 10b5-1 sales plan adopted by the Reporting Person on October 20, 2025.
2. 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.
3. 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.
/s/ Mark A. Wilson, Attorney-in-Fact07/17/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)