X0508 4 2023-12-18 0001076930 NOVANTA INC NOVT 0001513778 Buckley Robert C/O NOVANTA INC. 125 MIDDLESEX TURNPIKE BEDFORD MA 01730-1409 1 Chief Financial Officer 1 Common Stock 2023-12-18 4 S 0 900 170.08 D 126656 D Common Stock 2023-12-19 4 S 0 4791 170.57 D 121865 D Common Stock 2023-12-19 4 S 0 309 171.12 D 121556 D The sales reported in this Form 4 were effected pursuant to a pre-established Rule 10b5-1 trading plan entered into by the reporting person on June 8, 2023. This transaction was executed in multiple trades at prices ranging from $170.00 to $170.28. The price reported above reflects the weighted-average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected. This transaction was executed in multiple trades at prices ranging from $170.03 to $170.86. The price reported above reflects the weighted-average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected. This transaction was executed in multiple trades at prices ranging from $171.04 to $171.16. The price reported above reflects the weighted-average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected. Power of Attorney on File. /s/ John Burke, Attorney-in-Fact 2023-12-20