Iambic Therapeutics: Peter Olson holds 11,409 shares

The 215,992-share option grant had 25% vest on December 9, 2025, then 1/48th monthly; the other option vests in 48 equal monthly installments beginning March 23, 2026.

Rhea-AI Filing Summary

Iambic Therapeutics, Inc. (IAM) reports that Chief Scientific Officer Peter A. Olson held 11,409 shares of Common Stock directly as of October 14, 2026. He also held direct employee stock options covering 204,582 shares at a $7.3100 exercise price, expiring January 8, 2035, and 57,048 shares at $8.7300, expiring March 3, 2036.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Olson Peter A

Role Chief Scientific Officer

Type	Security	Shares	Price	Value
holding	Employee Stock Option (right to buy) F1	--	--	--
holding	Employee Stock Option (right to buy) F2	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Employee Stock Option (right to buy) — 261,630 contracts (Direct); Common Stock — 11,409 shares (Direct)

Footnotes (2)

1. F1. An option to purchase 215,992 shares was granted on January 8, 2025 and was exercised in part prior to the date on which the reporting person became subject to Section 16. Twenty-five percent of the shares subject to the option vested on December 9, 2025 and 1/48th of the shares vest monthly thereafter.
2. F2. The shares subject to the option vest in 48 equal monthly installments beginning on March 23, 2026.

Key Figures

Direct Common Stock holdings: 11,409 shares Option underlying shares: 204,582 shares Option exercise price: $7.3100 per share +4 more

7 metrics

Direct Common Stock holdings 11,409 shares As of October 14, 2026

Option underlying shares 204,582 shares Direct employee stock option; exercise price $7.3100 per share; expires January 8, 2035

Option exercise price $7.3100 per share Option covering 204,582 Common Stock shares

Option expiration January 8, 2035 Option covering 204,582 Common Stock shares

Option underlying shares 57,048 shares Direct employee stock option; exercise price $8.7300 per share; expires March 3, 2036

Option exercise price $8.7300 per share Option covering 57,048 Common Stock shares

Option expiration March 3, 2036 Option covering 57,048 Common Stock shares

Key Terms

Employee Stock Option, vest, Section 16

3 terms

Employee Stock Option financial

"Employee Stock Option (right to buy)"

An employee stock option is a promise that lets a worker buy company shares later at a predetermined price, often after they stay for a certain period or meet performance goals — think of it like a coupon that locks in today's price for a future purchase. It matters to investors because options align employees’ incentives with company performance, can increase the number of shares outstanding (dilution) when exercised, and represent a compensation cost that affects reported profits and shareholder value.

vest financial

"1/48th of the shares vest monthly thereafter"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Section 16 regulatory

"became subject to Section 16"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many shares did IAM Chief Scientific Officer Peter A. Olson hold?

Peter A. Olson held 11,409 shares of Common Stock directly as of October 14, 2026.

What are the vesting schedules for Peter A. Olson's IAM options?

The 215,992-share option granted January 8, 2025 had 25% of its shares vest on December 9, 2025, with 1/48th vesting monthly thereafter; the option covering 57,048 shares vests in 48 equal monthly installments beginning March 23, 2026.

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

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Available on EDGAR 10/15/2026 - 08:46 PM EDT Accepted by SEC EDGAR 10/14/2026 - 06:38 PM EDT Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Olson Peter A

(Last) (First) (Middle)

C/O IAMBIC THERAPEUTICS, INC.

5627 OBERLIN DRIVE, SUITE 120

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
10/14/2026

3. Issuer Name and Ticker or Trading Symbol
Iambic Therapeutics, Inc. [ IAM ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

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

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

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	11,409	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	(1)	01/08/2035	Common Stock	204,582	$7.31	D
Employee Stock Option (right to buy)	(2)	03/03/2036	Common Stock	57,048	$8.73	D

Explanation of Responses:

1. An option to purchase 215,992 shares was granted on January 8, 2025 and was exercised in part prior to the date on which the reporting person became subject to Section 16. Twenty-five percent of the shares subject to the option vested on December 9, 2025 and 1/48th of the shares vest monthly thereafter.

2. The shares subject to the option vest in 48 equal monthly installments beginning on March 23, 2026.

Remarks:

Exhibit 24.1 - Power of Attorney

	/s/ Sunny Chang, by power of attorney	10/14/2026
	** 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 5 (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 3: SEC 1473 (03-26)