ICU · SeaStar Medical Holding Corp

Represents a restricted stock unit award ("RSU"). The RSU will vest in three equal installment on July 1, 2026, November 1, 2026, and March 1, 2027.

Represent a restricted stock unit award ("RSU"). The RSUs will vest in full on July 1, 2027.

Represent a restricted stock unit award ("RSU"). The RSUs will vest in full on July 1, 2027.

Represent a restricted stock unit award ("RSU"). The RSUs will vest in full on July 1, 2027.

Represent a restricted stock unit award ("RSU"). The RSUs will vest in full on July 1, 2027.

Represents a restricted stock unit award ("RSU"). The RSU will vest in three equal installment on July 1, 2026, November 1, 2026, and March 1, 2027.

Represents a RSU award. The RSUs will vest in full on February 6, 2027.

Represents a RSU award. The RSUs will vest in full on February 6, 2027.

Represents a RSU award. The RSUs will vest in full on February 6, 2027.

Represents an RSU award. The RSU award vests in equal installments on the first, second and third anniversaries of February 6, 2026

Represents an RSU award. The RSU award vests in equal installments on the first, second and third anniversaries of February 6, 2026

Represents a RSU award. The RSUs will vest in full on February 6, 2027.

Represents an RSU award. The RSU award vests in equal installments on the first, second and third anniversaries of February 6, 2026

The price reported in Row 2, Column 4 is a weighted average price of $0.8565. These shares were purchased in multiple transactions at prices ranging from $0.8531 to $0.8599 inclusive. The reporting person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased at each separate price.

The price reported in Row 1, Column 4 is a weighted average price of $0.8899. These shares were purchased in multiple transactions at prices ranging from $0.885 to $0.89 inclusive. The reporting person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased at each separate price.

Represents a restricted stock unit ("RSU") award. The RSUs will vest in full on July 3, 2026.

Represents a RSU award. The RSUs will vest in full on July 3, 2026.

The total includes 5,333 shares underlying RSUs that were previously reported in Table II.

Represents a RSU award. The RSUs will vest in full on July 3, 2026.

Represents a RSU award. The RSUs will vest in full on July 3, 2026.

The total includes 5,333 shares underlying RSUs that were previously reported in Table II.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

As previously reported, on November 15, 2024, the reporting person was granted 65,000 RSUs, vesting in three approximately equal annual installments on the first, second and third anniversaries of July 1, 2024.

The total does not include 43,333 shares underlying RSUs that are now reported in Table I.

This Form 4 is being filed to report the vesting of certain restricted stock unit ("RSU") awards and the moving of unvested RSU awards previously reported in Table II to Table I.

Reflects RSUs that upon vesting converted into shares of ICU common stock.

The total includes 25,000 shares underlying RSUs that were previously reported in Table II.

Reflects a reduction by one share to correct a previous rounding error.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

As previously reported, on November 15, 2024, the reporting person was granted 15,000 RSUs, vesting in three equal annual installments on the first, second and third anniversaries of July 1, 2024.

The total does not include 25,000 shares underlying RSUs that are now reported in Table I.

This Form 4 is being filed to report the vesting of certain restricted stock unit ("RSU") awards and the moving of unvested RSU awards previously reported in Table II to Table I.

Reflects RSUs that upon vesting converted into shares of ICU common stock.

The total includes 43,333 shares underlying RSUs that were previously reported in Table II.

On June 7, 2024, the Issuer effectuated a 1-for-25 reverse split of the Issuer's common stock resulting in a reduction in the number of shares held by the Reporting Person. In addition, proportionate adjustments were made to the Issuer's outstanding equity awards. Accordingly, all amounts of securities reported in this Form 4 have been adjusted to reflect the 1-for-25 reverse split.

The total includes 5,333 shares underlying RSUs that were previously reported in Table II.

The price reported in Column 4 is a weighted average price of $0.3599. These shares were purchased in multiple transactions at prices ranging from $0.359 to $0.36, inclusive. The reporting person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased at each separate price.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

As previously reported, on November 13, 2024, the reporting person was granted 8,000 RSUs, vesting in three approximately equal annual installments on the first, second and third anniversaries of June 4, 2024.

The total does not include 5,333 shares underlying RSUs that are now reported in Table I.

This Form 4 is being filed to report the granting and vesting of certain restricted stock unit ("RSU") awards.

Reflects RSUs that upon vesting converted into shares of ICU common stock.

On June 7, 2024, the Issuer effectuated a 1-for-25 reverse split of the Issuer's common stock resulting in a reduction in the number of shares held by the Reporting Person. In addition, proportionate adjustments were made to the Issuer's outstanding equity awards. Accordingly, all amounts of securities reported in this Form 4 have been adjusted to reflect the 1-for-25 reverse split.

This Form 4 is being filed to report the vesting of certain restricted stock unit ("RSU") awards, the moving of unvested RSU awards previously reported in Table II to Table I and the open market purchase of shares of Common Stock.

Reflects RSUs that upon vesting converted into shares of ICU common stock.

The total includes 5,333 shares underlying RSUs that were previously reported in Table II.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

As previously reported, on November 13, 2024, the reporting person was granted 4,000 RSUs, which vested in full on June 4, 2025.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

As previously reported, on November 13, 2024, the reporting person was granted 8,000 RSUs, vesting in three approximately equal annual installments on the first, second and third anniversaries of June 4, 2024.

The total does not include 5,333 shares underlying RSUs that are now reported in Table I.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

As previously reported, on November 13, 2024, the reporting person was granted 8,000 RSUs, vesting in three approximately equal annual installments on the first, second and third anniversaries of June 4, 2024.

The total does not include 5,333 shares underlying RSUs that are now reported in Table I.

This Form 4 is being filed to report the granting and vesting of certain restricted stock unit ("RSU") awards and the moving of unvested RSU awards previously reported in Table II to Table I.

Reflects RSUs that upon vesting converted into shares of ICU common stock.

The total includes 5,333 shares underlying RSUs that were previously reported in Table II.

This Form 4 is being filed to report the granting and vesting of certain restricted stock unit ("RSU") awards and the moving of unvested RSU awards previously reported in Table II to Table I.

Reflects RSUs that upon vesting converted into shares of ICU common stock.

The total includes 5,333 shares underlying RSUs that were previously reported in Table II.

The price reported in Column 4 is a weighted average price of $1.2815. These shares were purchased in multiple transactions at prices ranging from $1.27 to $1.29, inclusive. The reporting person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased at each separate price.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

The RSUs reported herein will vest in equal installments on the first, second and third anniversaries of April 1, 2025.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

The RSUs reported herein will vest in equal installments on the first, second and third anniversaries of April 1, 2025.

4. The price reported in Column 4 is a weighted average price of $2.0405. These shares were purchased in multiple transactions at prices ranging from $2.01 to $2.06, inclusive. The reporting person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased at each separate price.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

The RSUs reported herein will vest in equal installments on the first, second and third anniversaries of July 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

The RSUs reported herein will vest in equal installments on the first, second and third anniversaries of July 1, 2024.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

100% of the restricted stock units vest on June 4, 2025.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock

100% of the restricted stock units vest on June 4, 2025.

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

The RSUs reported herein will vest in equal installments on the first, second and third anniversaries of June 4, 2024

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

The RSUs reported herein will vest in equal installments on the first, second and third anniversaries of June 4, 2024

Each restricted stock unit represents a contingent right to receive one share of ICU common stock.

The RSUs reported herein will vest in equal installments on the first, second and third anniversaries of June 4, 2024

Each restricted stock unit represents a contingent right to receive one share of ICU common stock

100% of the restricted stock units vest on June 4, 2025.