Nkarta (NKTX) director awarded 37,000 stock options vesting in 2027

Rhea-AI Filing Summary

Nkarta, Inc. director Ali Behbahani reported receiving a stock option grant covering 37,000 shares of common stock. The option has an exercise price of $2.46 per share and expires on June 9, 2036.

All 37,000 shares subject to the option vest 100% on the first to occur of June 10, 2027 or the day immediately before the first annual stockholder meeting after the grant date. The award becomes fully vested earlier if there is a defined change in control of Nkarta or if Behbahani’s service ends due to death or disability. Following this grant, he directly holds options for 37,000 underlying shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Behbahani Ali

Role null

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy)	37,000	$0.00	--

Holdings After Transaction: Stock Option (right to buy) — 37,000 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Option grant size: 37,000 shares Exercise price: $2.46 per share Expiration date: June 9, 2036 +1 more

4 metrics

Option grant size 37,000 shares Stock Option (right to buy) granted to director Ali Behbahani

Exercise price $2.46 per share Conversion or exercise price of the granted stock options

Expiration date June 9, 2036 Expiration of Behbahani’s stock option grant

Post-grant option holdings 37,000 shares Total shares underlying options following the transaction

Key Terms

Stock Option (right to buy), change in control, disability, vesting

4 terms

Stock Option (right to buy) financial

"security_title: Stock Option (right to buy)"

change in control financial

"will become fully vested should a "change in control" of the Issuer occur"

A "change in control" occurs when the ownership or management of a company shifts significantly, such as through a merger, acquisition, or sale of a large part of its assets. This change can impact how the company is run and may influence its future direction. For investors, it matters because it can affect the company's stability, strategy, and value, often signaling potential changes in investment risk or opportunity.

disability financial

"separation from service with the Issuer due to the Reporting Person's death or "disability""

vesting financial

"All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027"

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 →

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^*

Behbahani Ali

(Last) (First) (Middle)

2855 SAND HILL ROAD

(Street)

MENLO PARK CALIFORNIA 94025

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Nkarta, Inc. [ NKTX ]

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)
06/10/2026

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)	$2.46	06/10/2026		A		37,000		(1)	06/09/2036	Common Stock	37,000	$0	37,000	D

Explanation of Responses:

1. All shares subject to the option vest 100% on the first to occur of (i) June 10, 2027 or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a "change in control" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or "disability" (as described in the applicable award agreement).

	/s/ Zachary Bambach, attorney-in-fact	06/11/2026
	** 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 Nkarta (NKTX) disclose for director Ali Behbahani?

Nkarta disclosed that director Ali Behbahani received a stock option grant for 37,000 shares of common stock. The options were awarded as compensation, not bought on the open market, and are exercisable at $2.46 per share with long-term vesting conditions and a 2036 expiration.

How many Nkarta (NKTX) shares are covered by Ali Behbahani’s new stock options?

The grant covers options on 37,000 shares of Nkarta common stock. These options give Behbahani the right to buy those shares at a fixed $2.46 exercise price, subject to vesting and other conditions described in the award agreement and Form 4 footnotes.

What is the exercise price and expiration date of the Nkarta (NKTX) options granted to Ali Behbahani?

The options have an exercise price of $2.46 per share and expire on June 9, 2036. This means Behbahani can, once vested, purchase shares at $2.46 any time before that expiration date, assuming he continues to meet the award’s service conditions.

When do Ali Behbahani’s Nkarta (NKTX) stock options vest?

All 37,000 option shares vest 100% on the earlier of June 10, 2027 or the day immediately before the first Nkarta annual stockholder meeting after the grant date. The award can also fully vest sooner upon certain change-in-control, death, or disability events.

Do the Nkarta (NKTX) options for Ali Behbahani have accelerated vesting provisions?

Yes. Any unvested portion becomes fully vested upon a qualifying change in control of Nkarta, or if Behbahani’s service ends because of death or disability. These acceleration terms are defined in the applicable award agreement referenced in the Form 4 footnote.