Assembly Biosciences (NASDAQ: ASMB) awards 8,000 stock options to director McHutchison

Rhea-AI Filing Summary

Assembly Biosciences director John G. McHutchison received a grant of stock options for 8,000 shares of Common Stock. The options have an exercise price of $24.11 per share and expire on June 4, 2036. They vest, assuming continuous service, on the earlier of June 4, 2027 or the company’s 2027 annual meeting of stockholders.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider McHutchison John G

Role null

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	8,000	$0.00	--

Holdings After Transaction: Stock Option (right to buy) — 8,000 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Stock options granted: 8,000 options Exercise price: $24.11 per share Underlying shares: 8,000 shares +3 more

6 metrics

Stock options granted 8,000 options Grant to director on June 4, 2026

Exercise price $24.11 per share Strike price of granted options

Underlying shares 8,000 shares Common Stock covered by options

Expiration date June 4, 2036 Options lapse if not exercised

Vesting date trigger June 4, 2027 or 2027 meeting Earlier of two vesting events with continuous service

Total options after grant 8,000 options Holdings following this transaction

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: 24.1100"

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: 2036-06-04T00:00:00.000Z"

The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised.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"

annual meeting of stockholders financial

"the Issuer's 2027 annual meeting of stockholders"

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Form 4 Insider Transactions: What Each Field Means →

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^*

McHutchison John G

(Last) (First) (Middle)

C/O ASSEMBLY BIOSCIENCES, INC.

TWO TOWER PLACE, 7TH FLOOR

(Street)

SOUTH SAN FRANCISCO CALIFORNIA 94080

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ASSEMBLY BIOSCIENCES, INC. [ ASMB ]

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)
06/04/2026

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)	$24.11	06/04/2026		A		8,000		(1)	06/04/2036	Common Stock	8,000	$0	8,000	D

Explanation of Responses:

1. Grant of stock options. The stock options vest, assuming continuous service, upon the earlier of (1) June 4, 2027 and (2) the date of the Issuer's 2027 annual meeting of stockholders.

	/s/ John O. Gunderson, as Attorney-in-Fact	06/05/2026
	** 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 ASMB report for John G. McHutchison?

Assembly Biosciences reported that director John G. McHutchison received a grant of stock options for 8,000 shares of Common Stock. This is a compensation-related award, not an open-market purchase or sale of existing shares.

What is the exercise price of the new ASMB stock options?

The granted stock options have an exercise price of $24.11 per share. This is the price at which McHutchison can buy Assembly Biosciences Common Stock if the options vest and are later exercised.

When do John G. McHutchison’s ASMB options vest?

The options vest, assuming continuous service, on the earlier of June 4, 2027 or the date of Assembly Biosciences’ 2027 annual meeting of stockholders. Vesting must occur before the options can be exercised.

When do the newly granted ASMB stock options expire?

The granted stock options expire on June 4, 2036. After this expiration date, any unexercised options will lapse and can no longer be used to purchase Assembly Biosciences Common Stock.

How many shares underlie the new ASMB stock option grant?

The stock option grant covers 8,000 underlying shares of Assembly Biosciences Common Stock. If all options vest and are exercised, McHutchison could acquire up to 8,000 shares at the $24.11 exercise price.