Septerna (SEPN) director Jeffrey Tong granted options on 15,000 shares

Rhea-AI Filing Summary

Septerna, Inc. director Jeffrey K. Tong received a grant of stock options covering 15,000 shares of common stock. The options have an exercise price of $37.34 per share and expire on June 25, 2036. Following this grant, Tong holds stock options on 15,000 shares directly.

According to the terms, the 15,000 option shares vest in full on the earlier of June 26, 2027 or the date of Septerna’s next annual stockholder meeting, provided Tong continues serving the company through the vesting date.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Tong Jeffrey K

Role null

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	15,000	$0.00	--

Holdings After Transaction: Stock Option (Right to Buy) — 15,000 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Options granted: 15,000 shares Exercise price: $37.34 per share Underlying shares: 15,000 shares +3 more

6 metrics

Options granted 15,000 shares Stock Option (Right to Buy) grant to director

Exercise price $37.34 per share Conversion or exercise price for the stock option

Underlying shares 15,000 shares Common Stock underlying the option award

Total options after grant 15,000 shares Total derivative securities following transaction, held directly

Vesting date trigger June 26, 2027 Earlier of this date or next annual stockholder meeting, subject to continued service

Expiration date June 25, 2036 Option expiration for the 15,000-share grant

Key Terms

Stock Option (Right to Buy), exercise price, expiration date, underlying security, +1 more

5 terms

Stock Option (Right to Buy) financial

"security_title: Stock Option (Right to Buy)"

exercise price financial

"conversion_or_exercise_price: 37.3400"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

expiration date financial

"expiration_date: 2036-06-25T00:00:00.000Z"

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

underlying security financial

"underlying_security_title: Common Stock"

vesting financial

"shares underlying the stock option vest in full upon the earlier of (i) June 26, 2027 or (ii) the date of the Issuer's next annual meeting"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/30/2026 - 07:00 PM Accepted by SEC EDGAR 06/30/2026 - 07:00 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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).

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^*

Tong Jeffrey K

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$37.34	06/26/2026		A		15,000		(1)	06/25/2036	Common Stock	15,000	$0	15,000	D

Explanation of Responses:

1. The shares underlying the stock option vest in full upon the earlier of (i) June 26, 2027 or (ii) the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service to the Issuer through such vesting date.

Remarks:

Exhibit 24.2 - Substitute Power of Attorney

	/s/ Mark A. Wilson, Attorney-in-Fact	06/30/2026
	** Signature of Reporting Person	Date
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)

FAQ

What insider transaction did Septerna (SEPN) director Jeffrey K. Tong report?

Jeffrey K. Tong reported receiving stock options for 15,000 Septerna common shares. These options were granted at an exercise price of $37.34 per share and represent a compensation-related acquisition rather than an open-market stock purchase or sale.

How many Septerna (SEPN) shares are covered by Jeffrey K. Tong’s new options?

The new stock option grant covers 15,000 shares of Septerna common stock. All 15,000 underlying shares are tied to a single option award, and Tong’s total options following the transaction amount to 15,000 shares held directly.

What is the exercise price and expiration date of Jeffrey K. Tong’s Septerna (SEPN) options?

The granted options have an exercise price of $37.34 per share and expire on June 25, 2036. Tong can choose to exercise the options at that price once they vest, any time before the stated expiration date.

When do Jeffrey K. Tong’s new Septerna (SEPN) stock options vest?

The 15,000-share stock option vests in full on the earlier of June 26, 2027, or the date of Septerna’s next annual stockholder meeting. Vesting is conditioned on Tong’s continued service to Septerna through the applicable vesting date.

Is Jeffrey K. Tong’s Septerna (SEPN) Form 4 transaction a stock purchase or sale?

The Form 4 reports a grant of stock options, not a stock purchase or sale. It is classified as a grant, award, or other acquisition, providing the right to buy 15,000 shares at $37.34 rather than reflecting open-market trading activity.