Richard J. Hart - 13 Feb 2026 Form 4 Insider Report for Acadian Asset Management Inc. (AAMI)

Role
CLO and CAO
Signature
/s/ Richard J. Hart
Issuer symbol
AAMI
Transactions as of
13 Feb 2026
Net transactions value
-$383,690
Form type
4
Filing time
18 Feb 2026, 17:05:20 UTC
Previous filing
19 Feb 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Hart Richard Jonathan CLO and CAO 200 STATE STREET, SUITE 601A, BOSTON /s/ Richard J. Hart 18 Feb 2026 0001810382

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AAMI Common Stock Options Exercise $0 +5,755 +3.5% $0.000000 171,713 14 Feb 2026 Direct
transaction AAMI Common Stock Tax liability $144,247 -2,782 -1.6% $51.85 168,931 14 Feb 2026 Direct
transaction AAMI Common Stock Options Exercise $0 +9,550 +5.7% $0.000000 178,481 15 Feb 2026 Direct
transaction AAMI Common Stock Tax liability $239,443 -4,618 -2.6% $51.85 173,863 15 Feb 2026 Direct

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 AAMI Restricted Stock Units Award $0 +21,602 +67% $0.000000 53,650 13 Feb 2026 Common Stock 21,602 $0.000000 Direct F1, F2
transaction AAMI Restricted Stock Units Options Exercise $0 -5,755 -11% $0.000000 47,895 14 Feb 2026 Common Stock 5,755 $0.000000 Direct F1, F3
transaction AAMI Restricted Stock Units Options Exercise $0 -9,550 -20% $0.000000 38,345 15 Feb 2026 Common Stock 9,550 $0.000000 Direct F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.
F2 On February 13, 2026, the reporting person was granted 21,602 restricted stock units, vesting in equal annual installments over a three-year period with 1/3 of the shares vesting on each of February 13, 2027, February 13, 2028 and February 13, 2029.
F3 On February 14, 2025, the reporting person was granted 17,265 restricted stock units, vesting in equal annual installments over a three-year period with 1/3 of the shares vesting on each of February 14, 2026, February 14, 2027 and February 14, 2028.
F4 On February 15, 2023, the reporting person was granted 12,950 restricted stock units, vesting in equal annual installments over a three-year period with 1/3 of the shares vesting on each of February 15, 2024, February 15, 2025 and February 15, 2026. On February 15, 2024, the reporting person was granted 15,699 restricted stock units, vesting in equal annual installments over a three-year period with 1/3 of the shares vesting on each of February 15, 2025, February 15, 2026 and February 15, 2027.