Warren Foust - 15 May 2026 Form 4 Insider Report for STAAR SURGICAL CO (STAA)

Reporting relationship: Interim Co-CEO and Pres. & COO
Issuer ticker: STAA
Reported as of: 15 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 19 May 2026, 16:01:04 UTC
Prior SEC filing: 12 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Warren Foust

Key filing fact

Warren Foust filed Form 4 for STAAR SURGICAL CO (STAA) on 19 May 2026.

Key facts

This page summarizes Warren Foust's Form 4 filing for STAAR SURGICAL CO (STAA).
12 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 19 May 2026, 16:01.

Change

Previous filing in this sequence was filed on 12 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001970778 Primary reporting owner

Foust Warren

Relationship: Interim Co-CEO and Pres. & COO
Address: 25510 COMMERCENTRE DRIVE, LAKE FOREST
Signature: /s/ Warren Foust
Signature date: 19 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

STAA transaction

Common Stock

Award

Transaction value
Shares: +14,662
Change %: +22%
Price: $0.000000^*
Shares after: 81,579
Date: 15 May 2026
Ownership: Direct

STAA transaction

Common Stock

Tax liability

Transaction value
Shares: -7,460
Change %: -9.1%
Price: $32.07^*
Shares after: 74,119
Date: 15 May 2026
Ownership: Direct
Footnotes: F1

STAA transaction

Common Stock

Award

Transaction value
Shares: +7,331
Change %: +9.9%
Price: $0.000000^*
Shares after: 81,450
Date: 15 May 2026
Ownership: Direct

STAA transaction

Common Stock

Tax liability

Transaction value
Shares: -3,730
Change %: -4.6%
Price: $32.07^*
Shares after: 77,720
Date: 15 May 2026
Ownership: Direct
Footnotes: F2

STAA transaction

Common Stock

Award

Transaction value
Shares: +7,331
Change %: +9.4%
Price: $0.000000^*
Shares after: 85,051
Date: 15 May 2026
Ownership: Direct

STAA transaction

Common Stock

Tax liability

Transaction value
Shares: -3,730
Change %: -4.4%
Price: $32.07^*
Shares after: 81,321
Date: 15 May 2026
Ownership: Direct
Footnotes: F3

STAA transaction

Common Stock

Award

Transaction value
Shares: +3,666
Change %: +4.5%
Price: $0.000000^*
Shares after: 84,987
Date: 15 May 2026
Ownership: Direct

STAA transaction

Common Stock

Tax liability

Transaction value
Shares: -1,865
Change %: -2.2%
Price: $32.07^*
Shares after: 83,112
Date: 15 May 2026
Ownership: Direct
Footnotes: F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

STAA transaction Derivative

Performance Stock Units

Options Exercise

Transaction value
Shares: +14,662
Change %
Price: $0.000000^*
Shares after: 14,662
Date: 15 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 14,662
Exercise price: $0.000000
Footnotes: F5

STAA transaction Derivative

Performance Stock Units

Options Exercise

Transaction value
Shares: +7,331
Change %: +50%
Price: $0.000000^*
Shares after: 21,993
Date: 15 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 7,331
Exercise price: $0.000000
Footnotes: F6

STAA transaction Derivative

Performance Stock Units

Options Exercise

Transaction value
Shares: +7,331
Change %: +33%
Price: $0.000000^*
Shares after: 29,324
Date: 15 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 7,331
Exercise price: $0.000000
Footnotes: F7

STAA transaction Derivative

Performance Stock Units

Options Exercise

Transaction value
Shares: +3,666
Change %: +13%
Price: $0.000000^*
Shares after: 32,990
Date: 15 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,666
Exercise price: $0.000000
Footnotes: F8

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

On May 15, 2026, the first tranche of 14,662 performance stock units ("PSUs") awarded to the Reporting Person under the Issuer's 2025 Performance Stock Unit Award Program ("2025 PSU Program") in connection with his annual equity grant vested, of which 7,460 shares were withheld to satisfy taxes .

Footnote F2

On May 15, 2026, the second tranche of 7,331 PSUs awarded to the Reporting Person under the 2025 PSU Program in connection with his annual equity grant vested, of which 3,730 shares were withheld to satisfy taxes.

Footnote F3

On May 15, 2026, the first tranche of 7,331 PSUs awarded to the Reporting Person under the 2025 PSU Program in connection with his expanded role as President & Chief Operating Officer vested, of which 3,730 shares were withheld to satisfy taxes.

Footnote F4

On May 15, 2026, the second tranche of 3,666 PSUs awarded to the Reporting Person under the 2025 PSU Program in connection with his expanded role as President & Chief Operating Officer vested, of which 1,865 shares were withheld to satisfy taxes.

Footnote F5

Represents the settlement of the first tranche of performance stock units awarded to the Reporting Person in connection with his annual equity grant under the 2025 PSU Program. The number of shares earned was determined upon certification by the Compensation Committee based on achievement of applicable performance goals. The original grant was exempt pursuant to Rule 16b-3(d) and was not previously reported.

Footnote F6

Represents the settlement of the second tranche of performance stock units awarded to the Reporting Person in connection with his annual equity grant under the 2025 PSU Program. The number of shares earned was determined upon certification by the Compensation Committee based on achievement of applicable performance goals. The original grant was exempt pursuant to Rule 16b-3(d) and was not previously reported.

Footnote F7

Represents the settlement of the first tranche of performance stock units awarded under the 2025 PSU Program to the Reporting Person in connection with his expanded role as President & Chief Operating Officer. The number of shares earned was determined upon certification by the Compensation Committee based on achievement of applicable performance goals. The original grant was exempt pursuant to Rule 16b-3(d) and was not previously reported.

Footnote F8

Represents the settlement of the second tranche of performance stock units awarded under the 2025 PSU Program to the Reporting Person in connection with his expanded role as President & Chief Operating Officer. The number of shares earned was determined upon certification by the Compensation Committee based on achievement of applicable performance goals. The original grant was exempt pursuant to Rule 16b-3(d) and was not previously reported.

SEC remarks

The Issuer's 2025 Performance Stock Unit Award Program ("2025 PSU Program") was designed to incentivize growth over a multi-year period. Under the 2025 PSU Program, performance is measured based on the Company's trailing four-quarter revenue through the end of fiscal 2027. The performance stock units ("PSUs") were granted based on a target number of shares and can be earned between 0-200 percent of target based on Company performance. The PSUs were structured into five tranches, each with different targets for trailing four-quarter U.S. GAAP revenue. Trailing four quarter U.S. GAAP revenue is measured as of the end of each financial quarter, commencing with the fourth quarter of fiscal 2025 and continuing through the fourth quarter of fiscal 2027. If none of the targets are achieved as of the end of fiscal 2027, the PSUs will not be earned and be forfeited. If the first three targets are achieved as of the end of fiscal 2027, the PSUs will be earned at 100 percent of target. If all five targets are achieved as of the end of fiscal 2027, the PSUs will be earned at 200 percent of target. Each PSU represents the right to receive one share of the Issuer's common stock.