144/A 0001773704-26-000014 0001773704 XXXXXXXX LIVE 0000851205 COGNEX CORP 001-34218 ONE VISION DR NATICK MA 01760 5086503000 MACDONALD LAURA ANN Officer Common Stock Robert W Baird & Co

777 East Wisconsin Avenue Milwaukee WI 53202

2212 147767.00 167205192 05/11/2026 NASDAQ Common Stock Robert W Baird & Co

777 East Wisconsin Avenue Milwaukee WI 53202

95910 6406999.00 167205192 05/11/2026 NASDAQ Common Stock 02/22/2024 RSU Release Issuer N 837 02/22/2024 Settlement of vested Restricted Stock Unit award Common Stock 02/22/2023 RSU Release Issuer N 542 02/22/2023 Settlement of vested Restricted Stock Unit award Common Stock 02/16/2023 RSU Release Issuer N 500 02/16/2023 Settlement of vested Restricted Stock Unit award Common Stock 02/16/2022 RSU Release Issuer N 333 02/16/2022 Settlement of vested Restricted Stock Unit award Common Stock 05/11/2026 Option Granted 2/18/2025 Issuer N 6634 05/11/2026 Cash Common Stock 05/11/2026 Option Granted - 2/20/2024 Issuer N 15080 05/11/2026 Cash Common Stock 05/11/2026 Option Granted - 2/21/2023 Issuer N 12196 05/11/2026 Cash Common Stock 05/11/2026 Option Granted - 2/18/2020 Issuer N 17000 05/11/2026 Cash Common Stock 05/11/2026 Option Granted - 2/19/2019 Issuer N 30000 05/11/2026 Cash Common Stock 05/11/2026 Option Granted 2/20/2018 Issuer N 15000 05/11/2026 Cash N Laura Ann MacDonald

One Vision Drive Natick MA 01760

Common Stock 02/12/2026 14881 850554.00 This Form 144 is being filed as a corrective amendment to the Form 144 filed on May 11, 2026 - the original filing. The original filing contained an error by including a Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1. The Person is not relying on Rule 10b5-1 and, therefore, no date should have been included in the original filing. This amended filing corrects that error. No other changes have been made. 05/13/2026 Laura A. MacDonald