INSIGHT ENTERPRISES INC — Director's Dealing 2026

Feb 24, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: INSIGHT ENTERPRISES INC (NSIT)
CIK: 0000932696
Period of Report: 2026-02-20

Reporting Person: Vasin Jennifer M (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-20	Common Stock	M	383	—	Acquired	6960	Direct
2026-02-20	Common Stock	F	126	$85.50	Disposed	6834	Direct
2026-02-20	Common Stock	M	511	—	Acquired	7345	Direct
2026-02-20	Common Stock	F	142	$85.50	Disposed	7203	Direct
2026-02-20	Common Stock	M	356	—	Acquired	7559	Direct
2026-02-20	Common Stock	F	118	$85.50	Disposed	7441	Direct
2026-02-20	Common Stock	M	475	—	Acquired	7916	Direct
2026-02-20	Common Stock	F	155	$85.50	Disposed	7761	Direct
2026-02-20	Common Stock	M	241	—	Acquired	8002	Direct
2026-02-20	Common Stock	F	79	$85.50	Disposed	7923	Direct
2026-02-20	Common Stock	M	643	—	Acquired	8566	Direct
2026-02-20	Common Stock	F	177	$85.50	Disposed	8389	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-20	Restricted Stock Units	$	A	4211	Acquired		Common Stock (4211)	Direct
2026-02-20	Restricted Stock Units	$	A	3158	Acquired		Common Stock (3158)	Direct
2026-02-20	Restricted Stock Units	$	M	383	Disposed		Common Stock (383)	Direct
2026-02-20	Restricted Stock Units	$	M	511	Disposed		Common Stock (511)	Direct
2026-02-20	Restricted Stock Units	$	M	356	Disposed		Common Stock (356)	Direct
2026-02-20	Restricted Stock Units	$	M	475	Disposed		Common Stock (475)	Direct
2026-02-20	Restricted Stock Units	$	M	241	Disposed		Common Stock (241)	Direct
2026-02-20	Restricted Stock Units	$	M	643	Disposed		Common Stock (643)	Direct

Footnotes

F1: Insight Enterprises, Inc. has withheld the number of whole shares necessary to satisfy the minimum statutory tax withholding obligations. The value of the vested shares (and the taxable income) is calculated based on the closing price on the vesting date or next preceding trading date in the case that the vesting date is a non-trading date.

F2: Each restricted stock unit represents a contingent right to receive one share of Common Stock of Insight Enterprises, Inc.

F3: The restricted stock units were granted on February 20, 2026 with vesting to occur in three equal annual installments beginning February 20, 2027.

F4: The number of restricted stock units increases or decreases with the Company's performance against specific objectives defined in advance of the grant date, and the restricted stock units will vest in three equal annual installments beginning February 20, 2027.

F5: The number of restricted stock units increases or decreases with the Company's performance against specific objectives defined in advance of the grant date, and the restricted stock units will vest in three equal annual installments beginning February 20, 2024.

F6: The restricted stock units were granted on February 20, 2023 with vesting to occur in three equal annual installments beginning February 20, 2024.

F7: The number of restricted stock units increases or decreases with the Company's performance against specific objectives defined in advance of the grant date, and the restricted stock units will vest in three equal annual installments beginning February 20, 2025.

F8: The restricted stock units were granted on February 20, 2024 with vesting to occur in three equal annual installments beginning February 20, 2025.

F9: The number of restricted stock units increases or decreases with the Company's performance against specific objectives defined in advance of the grant date, and the restricted stock units will vest in three equal annual installments beginning February 20, 2026.

F10: The restricted stock units were granted on February 20, 2025 with vesting to occur in three equal annual installments beginning February 20, 2026.