Thorlabs, Inc.

Form 5500

THORLABS, INC.

43 Sparta Avenue, Newton, Nj 07860 (973) 300-3081 EIN:22-2873153 Plan Admin:Robert Regimbal

Year	Plan Name	Participants BOY/EOY	Assets BOY/EOY
2022	Plan NameTHORLABS, INC 401(K) RETIREMENT PLAN Plan #002 Participants BOY/EOY1,592 / 1,703 Assets BOY/EOY$108,505,127 / $95,526,860	2022	THORLABS, INC 401(K) RETIREMENT PLAN - Plan #002	1,592 / 1,703	$108,505,127 / $95,526,860
2022	Plan NameTHORLABS, INC. HEALTH AND WELFARE PLAN Plan #501 Participants BOY/EOY1,378 / 0 Assets BOY/EOY$0 / $0	2022	THORLABS, INC. HEALTH AND WELFARE PLAN - Plan #501	1,378 / 0	$0 / $0
2021	Plan NameTHORLABS, INC 401(K) RETIREMENT PLAN Plan #002 Participants BOY/EOY1,426 / 1,525 Assets BOY/EOY$86,861,766 / $108,505,127	2021	THORLABS, INC 401(K) RETIREMENT PLAN - Plan #002	1,426 / 1,525	$86,861,766 / $108,505,127
2021	Plan NameTHORLABS, INC. HEALTH AND WELFARE PLAN Plan #501 Participants BOY/EOY1,243 / 0 Assets BOY/EOY$0 / $0	2021	THORLABS, INC. HEALTH AND WELFARE PLAN - Plan #501	1,243 / 0	$0 / $0
2020	Plan NameTHORLABS, INC 401(K) RETIREMENT PLAN Plan #002 Participants BOY/EOY1,444 / 1,408 Assets BOY/EOY$72,243,881 / $86,861,766	2020	THORLABS, INC 401(K) RETIREMENT PLAN - Plan #002	1,444 / 1,408	$72,243,881 / $86,861,766
2020	Plan NameTHORLABS, INC. HEALTH AND WELFARE PLAN Plan #501 Participants BOY/EOY1,165 / 0 Assets BOY/EOY$0 / $0	2020	THORLABS, INC. HEALTH AND WELFARE PLAN - Plan #501	1,165 / 0	$0 / $0
2019	Plan NameTHORLABS, INC 401(K) RETIREMENT PLAN Plan #002 Participants BOY/EOY1,280 / 1,385 Assets BOY/EOY$52,672,621 / $72,243,881	2019	THORLABS, INC 401(K) RETIREMENT PLAN - Plan #002	1,280 / 1,385	$52,672,621 / $72,243,881
2019	Plan NameTHORLABS, INC. HEALTH AND WELFARE PLAN Plan #501 Participants BOY/EOY1,171 / 0 Assets BOY/EOY$0 / $0	2019	THORLABS, INC. HEALTH AND WELFARE PLAN - Plan #501	1,171 / 0	$0 / $0