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Nkarta (NKTX) director granted 37,000 stock options for RA Capital funds

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Nkarta, Inc. director Zachary Scheiner reported an award of stock options covering 37,000 shares of common stock at an exercise price of $2.46 per share. The options vest 100% on the earlier of June 10, 2027 or the day before the first annual stockholder meeting after the grant, and expire on June 9, 2036. Under an arrangement with RA Capital Management, L.P., Scheiner holds the option for the benefit of RA Capital Healthcare Fund, L.P. and RA Capital Nexus Fund, L.P. and disclaims beneficial ownership of the option and underlying shares.

Positive

  • None.

Negative

  • None.
Insider Scheiner Zachary
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. 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). Under the Reporting Person's arrangement with RA Capital Management, L.P. (the "Adviser"), the Reporting Person holds the stock option for the benefit of the RA Capital Healthcare Fund, L.P. (the "Fund") and the RA Capital Nexus Fund, L.P. (the "Nexus Fund"). The Reporting Person is obligated to turn over to the Adviser any net cash or stock received upon exercise of the stock option, which will offset advisory fees owed by the Fund and the Nexus Fund to the Adviser. The Reporting Person therefore disclaims beneficial ownership of the stock option and underlying common stock.
Stock options granted 37,000 options Grant of stock options to director Zachary Scheiner
Exercise price $2.46 per share Exercise price for 37,000 Nkarta common shares
Expiration date June 9, 2036 Option expiration for Scheiner’s 37,000-share grant
Vesting date trigger June 10, 2027 Full vesting or earlier day before first annual meeting
Underlying shares 37,000 shares Underlying Nkarta common stock for the option grant
stock option financial
"All shares subject to the option vest 100% on the first to occur"
A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.
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.
beneficial ownership financial
"The Reporting Person therefore disclaims beneficial ownership of the stock option"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
advisory fees financial
"which will offset advisory fees owed by the Fund and the Nexus Fund"
Advisory fees are payments made to financial advisors or investment managers for guidance, portfolio management, or other services, typically charged as a fixed amount or a percentage of assets under management. They matter because they lower an investor’s net returns—like paying a mechanic to tune a car, you expect better performance, so investors weigh whether the cost is justified by higher returns, better risk control, or convenience.
disability financial
"due to the Reporting Person's death or "disability""
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
Scheiner Zachary
(Last)(First)(Middle)
C/O RA CAPITAL MANAGEMENT
200 BERKELEY STREET, 18TH FLOOR
(Street)
BOSTON MASSACHUSETTS 02116
(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)
XDirector10% 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)
XForm 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)
CodeVAmount(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (right to buy)$2.4606/10/2026A37,000 (1)06/09/2036Common Stock37,000$037,000D(2)
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).
2. Under the Reporting Person's arrangement with RA Capital Management, L.P. (the "Adviser"), the Reporting Person holds the stock option for the benefit of the RA Capital Healthcare Fund, L.P. (the "Fund") and the RA Capital Nexus Fund, L.P. (the "Nexus Fund"). The Reporting Person is obligated to turn over to the Adviser any net cash or stock received upon exercise of the stock option, which will offset advisory fees owed by the Fund and the Nexus Fund to the Adviser. The Reporting Person therefore disclaims beneficial ownership of the stock option and underlying common stock.
/s/ Bridgette Housley, as Attorney-in-Fact06/11/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Nkarta (NKTX) report for Zachary Scheiner?

Nkarta director Zachary Scheiner reported a grant of stock options for 37,000 shares of common stock at an exercise price of $2.46 per share, representing a compensation-related award rather than an open-market stock purchase or sale.

When do Zachary Scheiner’s Nkarta (NKTX) stock options vest and expire?

All 37,000 stock options vest 100% on the earlier of June 10, 2027 or the day immediately before Nkarta’s first annual stockholder meeting after the grant. The options carry an expiration date of June 9, 2036, defining their long-term exercise window.

What is the exercise price of the Nkarta (NKTX) stock options granted to Zachary Scheiner?

The stock options granted to Zachary Scheiner have an exercise price of $2.46 per share for 37,000 underlying shares of Nkarta common stock, meaning they can be exercised to buy shares at that fixed price through their June 9, 2036 expiration.

Who benefits economically from Zachary Scheiner’s Nkarta (NKTX) stock option grant?

Under Scheiner’s arrangement with RA Capital Management, L.P., any net cash or stock from exercising the option is turned over to RA Capital Healthcare Fund, L.P. and RA Capital Nexus Fund, L.P., offsetting advisory fees, and Scheiner disclaims beneficial ownership.

How does a change in control affect Zachary Scheiner’s Nkarta (NKTX) stock options?

If a change in control of Nkarta occurs, any then-outstanding and unvested portion of Scheiner’s 37,000-share option becomes fully vested, as described in the applicable award agreement, accelerating vesting relative to the standard time-based schedule.