Joyce A. Mullen - 20 Feb 2026 Form 4 Insider Report for INSIGHT ENTERPRISES INC (NSIT)

Role
Chief Executive Officer
Signature
Lisanne Steinheiser, by Power of Attorney, for Joyce A. Mullen
Issuer symbol
NSIT
Transactions as of
20 Feb 2026
Net transactions value
-$710,078
Form type
4
Filing time
24 Feb 2026, 16:46:21 UTC
Previous filing
12 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Mullen Joyce A Chief Executive Officer 2701 E INSIGHT WAY, CHANDLER Lisanne Steinheiser, by Power of Attorney, for Joyce A. Mullen 24 Feb 2026 0001771398

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NSIT Common Stock Options Exercise $0 +3,064 +4.9% $0.000000 65,602 20 Feb 2026 Direct
transaction NSIT Common Stock Tax liability $68,998 -807 -1.2% $85.50 64,795 20 Feb 2026 Direct F1
transaction NSIT Common Stock Options Exercise $0 +4,086 +6.3% $0.000000 68,881 20 Feb 2026 Direct
transaction NSIT Common Stock Tax liability $144,410 -1,689 -2.5% $85.50 67,192 20 Feb 2026 Direct F1
transaction NSIT Common Stock Options Exercise $0 +3,559 +5.3% $0.000000 70,751 20 Feb 2026 Direct
transaction NSIT Common Stock Tax liability $83,277 -974 -1.4% $85.50 69,777 20 Feb 2026 Direct F1
transaction NSIT Common Stock Options Exercise $0 +4,745 +6.8% $0.000000 74,522 20 Feb 2026 Direct
transaction NSIT Common Stock Tax liability $167,751 -1,962 -2.6% $85.50 72,560 20 Feb 2026 Direct F1
transaction NSIT Common Stock Options Exercise $0 +2,260 +3.1% $0.000000 74,820 20 Feb 2026 Direct
transaction NSIT Common Stock Tax liability $50,872 -595 -0.8% $85.50 74,225 20 Feb 2026 Direct F1
transaction NSIT Common Stock Options Exercise $0 +6,025 +8.1% $0.000000 80,250 20 Feb 2026 Direct
transaction NSIT Common Stock Tax liability $194,769 -2,278 -2.8% $85.50 77,972 20 Feb 2026 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction NSIT Restricted Stock Units Options Exercise $0 -3,064 -100% $0.000000 0 20 Feb 2026 Common Stock 3,064 Direct F2, F3
transaction NSIT Restricted Stock Units Options Exercise $0 -4,086 -100% $0.000000 0 20 Feb 2026 Common Stock 4,086 Direct F2, F4
transaction NSIT Restricted Stock Units Options Exercise $0 -3,559 -50% $0.000000 3,558 20 Feb 2026 Common Stock 3,559 Direct F2, F5
transaction NSIT Restricted Stock Units Options Exercise $0 -4,745 -50% $0.000000 4,745 20 Feb 2026 Common Stock 4,745 Direct F2, F6
transaction NSIT Restricted Stock Units Options Exercise $0 -2,260 -33% $0.000000 4,518 20 Feb 2026 Common Stock 2,260 Direct F2, F7
transaction NSIT Restricted Stock Units Options Exercise $0 -6,025 -33% $0.000000 12,048 20 Feb 2026 Common Stock 6,025 Direct F2, F8
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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 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.
F4 The restricted stock units were granted on February 20, 2023 with vesting to occur in three equal annual installments beginning February 20, 2024.
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, 2025.
F6 The restricted stock units were granted on February 20, 2024 with vesting to occur in three equal annual installments beginning February 20, 2025.
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, 2026.
F8 The restricted stock units were granted on February 20, 2025 with vesting to occur in three equal annual installments beginning February 20, 2026.