Nkarta (NKTX) director George Simeon awarded 37,000-share stock option grant

Rhea-AI Filing Summary

Nkarta, Inc. director George Simeon received a stock option grant for 37,000 shares of Common Stock. The option has an exercise price of $2.4600 per share and expires on June 9, 2036. All shares subject to the option vest 100% on the earlier of June 10, 2027 or the day immediately before the first annual meeting of stockholders after the grant date. The award becomes fully vested if there is a described "change in control" or if Simeon’s service ends because of death or "disability" as defined in the award agreement.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider George Simeon

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 size: 37,000 shares Exercise price: $2.4600 per share Expiration date: June 9, 2036 +2 more

5 metrics

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

Exercise price $2.4600 per share Conversion or exercise price of stock option

Expiration date June 9, 2036 Option expiration date

Vesting date trigger June 10, 2027 100% vesting on earlier of this date or pre-annual meeting

Underlying shares 37,000 shares Underlying Nkarta common stock for the option

Key Terms

Stock Option (right to buy), Common Stock, change in control, disability, +1 more

5 terms

Stock Option (right to buy) financial

"security_title: Stock Option (right to buy)"

Common Stock financial

"underlying_security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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""

annual meeting of the Issuer's stockholders financial

"the first annual meeting of the Issuer's stockholders to occur after the date of grant"

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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^*

George Simeon

(Last) (First) (Middle)

929 MAIN STREET

SUITE 200

(Street)

REDWOOD CITY CALIFORNIA 94063

(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/ Sasha Keough, attorney-in-fact for Simeon George	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 did Nkarta (NKTX) director George Simeon report in this Form 4?

George Simeon reported receiving a stock option to acquire 37,000 Nkarta common shares. The option is a derivative security with a fixed exercise price and specific vesting and expiration terms detailed in the filing’s footnote.

What are the key terms of George Simeon’s Nkarta (NKTX) stock option grant?

The option covers 37,000 shares of Nkarta common stock at an exercise price of $2.4600 per share. It expires on June 9, 2036 and is held directly by Simeon according to the ownership information disclosed.

When do George Simeon’s Nkarta (NKTX) options vest under this award?

All 37,000 option shares vest 100% on the earlier of June 10, 2027 or the day immediately before Nkarta’s first annual stockholder meeting after the grant date, according to the vesting schedule described in the footnote.

Are there accelerated vesting conditions for George Simeon’s Nkarta (NKTX) options?

Yes. Any unvested portion of the option becomes fully vested if a defined “change in control” of Nkarta occurs, or if Simeon’s service ends due to death or “disability,” as those terms are described in the applicable award agreement.

How many Nkarta (NKTX) derivative securities does George Simeon hold after this transaction?

After this transaction, Simeon holds stock options covering 37,000 shares of Nkarta common stock. The filing’s total_shares_following_transaction field for this derivative security shows 37,000, matching the size of the newly granted award.