Nkarta director granted options on 37,000 shares

Nkarta, Inc. director George Vratsanos received a grant of stock options covering 37,000 shares of common stock at an exercise price of $2.46 per share.

Rhea-AI Filing Summary

Nkarta, Inc. director George Vratsanos received a grant of stock options covering 37,000 shares of common stock at an exercise price of $2.46 per share. This is a compensation-related award, not an open-market purchase.

All 37,000 option shares vest 100% on the earlier of June 10, 2027 or the day immediately before the first annual stockholder meeting following the grant date. The options become fully vested earlier if there is a qualifying change in control of Nkarta or if Vratsanos separates from service due to death or disability before that time.

Insider Trade Summary

Grant/Award: 37,000 shares

Grant/Award 1 txn

Insider Vratsanos George

Role Director

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

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

Footnotes (1)

1. F1. 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).

Key Figures

Option grant size: 37,000 shares Exercise price: $2.46 per share Shares underlying option: 37,000 shares +3 more

6 metrics

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

Exercise price $2.46 per share Conversion or exercise price of option

Shares underlying option 37,000 shares Underlying Nkarta common stock

Post-grant derivative holdings 37,000 options Total options held after this grant

Vesting date trigger June 10, 2027 Full vesting or earlier before first annual meeting

Option expiration June 9, 2036 Expiration date of stock option award

Key Terms

Stock Option (right to buy), change in control, separation from service, disability

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.

separation from service financial

"upon the Reporting Person's separation from service with the Issuer"

disability financial

"due to the Reporting Person's death or "disability""

FAQ

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

What did Nkarta (NKTX) director George Vratsanos report on this Form 4?

George Vratsanos reported receiving a grant of stock options for 37,000 shares of Nkarta common stock. These options are compensation, not a market purchase, and give him the right to buy shares at a fixed exercise price of $2.46 per share.

How many Nkarta (NKTX) shares are covered by the new stock option grant?

The new stock option grant covers 37,000 shares of Nkarta common stock. All of these shares are subject to vesting conditions, meaning they must vest before they can be exercised to purchase the underlying common stock at the stated exercise price.

What is the exercise price of George Vratsanos’s Nkarta (NKTX) stock options?

The exercise price of the stock options granted to George Vratsanos is $2.46 per share. This is the fixed price he would pay to buy Nkarta common shares once the options vest and become exercisable under the award’s vesting terms.

When do the newly granted Nkarta (NKTX) options to George Vratsanos vest?

All shares under the option vest 100% on the earlier of June 10, 2027 or the day immediately before Nkarta’s first annual stockholder meeting after the grant date. Until that vesting event, the options generally cannot be exercised.

Do the Nkarta (NKTX) options to George Vratsanos have accelerated vesting protections?

Yes. Any unvested portion of the options becomes fully vested upon a qualifying change in control of Nkarta or if Vratsanos’s service ends due to death or disability. These provisions are described in the applicable award agreement referenced in the disclosure.

When do George Vratsanos’s Nkarta (NKTX) stock options expire?

The stock options granted to George Vratsanos expire on June 9, 2036. After that expiration date, any unexercised portion of the options will lapse, and he will no longer be able to purchase Nkarta common stock under this particular award.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 06/11/2026 - 04:11 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^*

Vratsanos George

(Last) (First) (Middle)

C/O NKARTA, INC.

1150 VETERANS BOULEVARD

(Street)

SOUTH SAN FRANCISCO CALIFORNIA 94080

(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/ Bridgette Housley, as 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)