PSTV · Plus Therapeutics, Inc.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on July 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on July 1, 2026.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on July 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on July 1, 2026.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Represents the vesting of an RSU grant which occurs in four substantially equal quarterly installments beginning on July 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

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.

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.

The options vest over four years in substantially equal 1/48th increments on each monthly anniversary of the issuance and vest on a change of control in accordance with the Optionee's employment agreement.

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.

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.

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.

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 24 months from the grant date in substantially equaly monthly increments.

The options vest over four years in substantially equal 1/48th increments on each monthly anniversary of the issuance and vest on a change of control in accordance with the Optionee's employment agreement.

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.

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 twelve quarters in substantially equal 1/12th increments, commencing with 1/12th vesting on July 1, 2026 and the remainder vesting quarterly thereafter.

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 twelve quarters in substantially equal 1/12th increments, commencing with 1/12th 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.

One fourth of the options vest on April 20, 2027 and an additional 1/36th of the remaining options vest on each monthly anniversary thereafter in substantially equal increments.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock. One third of the RSUs awarded vest on July 1, 2027, and the remainder of the RSUs vest ratably over the next eight quarters in substantially equal increments.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

The options vest over four years in substantially equal 1/48th increments on each monthly anniversary of the issuance and vest on a change of control in accordance with the Optionee's employment agreement.

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 twelve quarters in substantially equal 1/12th increments, commencing with 1/12th vesting on April 1, 2026 and the remainder vesting quarterly thereafter.

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 twelve quarters in substantially equal 1/12th increments, commencing with 1/12th vesting on April 1, 2026 and the remainder vesting quarterly thereafter.