STOCK TITAN

Equity grants for PLUS THERAPEUTICS (PSTV) director An van Es-Johansson

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

Rhea-AI Filing Summary

van Es-Johansson An reported acquisition or exercise transactions in this Form 4 filing.

PLUS THERAPEUTICS director An van Es-Johansson received new equity awards. On May 14, 2026, the director was granted options to buy 3,686 shares of common stock at $5.76 per share, expiring on May 14, 2036, vesting monthly over 12 months or fully at the 2027 Annual Stockholder Meeting. The director also received 3,686 restricted stock units, each representing one share, vesting in four equal quarterly installments starting July 1, 2026.

Positive

  • None.

Negative

  • None.
Insider van Es-Johansson An
Role null
Type Security Shares Price Value
Grant/Award Restricted Stock Units 3,686 $0.00 --
Grant/Award Stock Option (Right to Buy) 3,686 $0.00 --
Holdings After Transaction: Restricted Stock Units — 3,686 shares (Direct, null); Stock Option (Right to Buy) — 3,686 shares (Direct, null)
Footnotes (1)
  1. Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock. The RSUs awarded vest ratably over four quarters in substantially equal 1/4th increments, commencing with 1/4th vesting on July 1, 2026 and the remainder vesting quarterly thereafter. The options vest monthly over 12 months from the grant date in substantially equal monthly increments, provided that the options vest in full on the Issuer's 2027 Annual Stockholder Meeting, subject to the Reporting Person's continued service to the Issuer through each applicable vesting date or, if earlier, such annual meeting.
Stock options granted 3,686 options Grant to director on May 14, 2026
Option exercise price $5.76 per share Stock Option (Right to Buy) for common stock
Option expiration May 14, 2036 Expiration date of granted stock options
RSUs granted 3,686 RSUs Restricted Stock Units tied to common stock
RSU vesting start July 1, 2026 First 1/4 RSU vesting date
Option vesting period 12 months Monthly vesting or full vesting by 2027 Annual Meeting
Restricted Stock Units financial
"The RSUs awarded vest ratably over four quarters in substantially equal 1/4th increments"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Stock Option (Right to Buy) financial
"security_title: "Stock Option (Right to Buy)" with an exercise price of 5.7600"
vest ratably financial
"The RSUs awarded vest ratably over four quarters in substantially equal 1/4th increments"
Annual Stockholder Meeting financial
"options vest in full on the Issuer's 2027 Annual Stockholder Meeting"
An annual stockholder meeting is a yearly gathering where a company's owners (shareholders) receive updates on performance, vote on key issues like board members, executive pay and major corporate plans, and ask questions of management. Think of it as a company town hall where choices about oversight and direction are decided; outcomes can affect management accountability, corporate strategy and ultimately the value and risks of investors’ shares.
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*
van Es-Johansson An

(Last)(First)(Middle)
C/O PLUS THERAPEUTICS INC.
6420 LEVIT GREEN BOULEVARD, SUITE 310

(Street)
HOUSTON TEXAS 77021

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
PLUS THERAPEUTICS, INC. [ PSTV ]
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)
05/14/2026
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
Restricted Stock Units$0(1)05/14/2026A3,686 (1) (1)Common Stock3,686$03,686D
Stock Option (Right to Buy)$5.7605/14/2026A3,686 (2)05/14/2036Common Stock3,686$03,686D
Explanation of Responses:
1. Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock. The RSUs awarded vest ratably over four quarters in substantially equal 1/4th increments, commencing with 1/4th vesting on July 1, 2026 and the remainder vesting quarterly thereafter.
2. The options vest monthly over 12 months from the grant date in substantially equal monthly increments, provided that the options vest in full on the Issuer's 2027 Annual Stockholder Meeting, subject to the Reporting Person's continued service to the Issuer through each applicable vesting date or, if earlier, such annual meeting.
Andrew Sims, as attorney-in-fact05/18/2026
** 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)

FAQ

What did PLUS THERAPEUTICS (PSTV) director An van Es-Johansson receive in this Form 4?

The director received equity-based compensation: 3,686 stock options and 3,686 restricted stock units. Both awards relate to PLUS THERAPEUTICS common stock and are structured to vest over time, encouraging continued board service and long-term alignment with shareholders.

What are the key terms of the PLUS THERAPEUTICS (PSTV) stock options granted?

The options cover 3,686 shares of common stock at an exercise price of $5.76 per share. They vest in substantially equal monthly increments over 12 months and expire on May 14, 2036, or earlier under standard plan conditions tied to service.

How do the restricted stock units in this PLUS THERAPEUTICS (PSTV) filing vest?

Each of the 3,686 RSUs represents a right to receive one share of common stock. The RSUs vest ratably in four equal one-quarter increments, beginning July 1, 2026, with additional quarterly vesting thereafter, subject to the director’s continued service.

Is the Form 4 transaction for PLUS THERAPEUTICS (PSTV) a stock purchase or a grant?

The Form 4 reflects equity grants, not an open-market stock purchase. It reports the award of stock options and restricted stock units as director compensation, with no cash paid by the insider at grant and vesting schedules defined in the award terms.

Does the PLUS THERAPEUTICS (PSTV) director need to pay anything for the RSUs and options?

The RSUs do not require payment when they vest; they convert into shares. The stock options have an exercise price of $5.76 per share, which must be paid if the director chooses to exercise them before their May 14, 2036 expiration.

What service condition is tied to the PLUS THERAPEUTICS (PSTV) option vesting?

Option vesting depends on continued service as a director and the 2027 Annual Stockholder Meeting. The options vest monthly over 12 months, but will vest in full by the 2027 annual meeting if the director remains in service through each applicable vesting date.