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AAMI

Acadian Asset Management Inc.

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Tapewire entity
4180
SEC CIK
0001748824
Parsed reports
82

Last 12 months

Inside the activity.

0 purchase rows · 9 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202500
Dec 202500
Jan 202600
Feb 202602
Mar 202600
Apr 202600
May 202602
Jun 202601
Jul 202600
Aug 202604
Sep 202600
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
August 04, 2026 Filed Aug 5, 2026 20:07 UTC SaleCommon Stock 244 $92.36 $22,534.62
Disclosure

SEC source: 0001628280-26-053337 · wk-form4_1785960464.xml · nonDerivative · entry 4

Wiater Christina · CIK 0001806909 · PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Read SEC document
August 03, 2026 Filed Aug 5, 2026 20:07 UTC SaleCommon Stock 3 $88.11 $264.33
Disclosure

SEC source: 0001628280-26-053337 · wk-form4_1785960464.xml · nonDerivative · entry 3

Wiater Christina · CIK 0001806909 · PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 244

Read SEC document
August 03, 2026 Filed Aug 5, 2026 20:07 UTC SaleCommon Stock 17,389 $87.49 $1,521,401.87
Disclosure

SEC source: 0001628280-26-053337 · wk-form4_1785960464.xml · nonDerivative · entry 2

Wiater Christina · CIK 0001806909 · PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 247

F2 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.03 to $87.99, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

Read SEC document
August 03, 2026 Filed Aug 5, 2026 20:07 UTC SaleCommon Stock 7,978 $86.61 $690,960.22
Disclosure

SEC source: 0001628280-26-053337 · wk-form4_1785960464.xml · nonDerivative · entry 1

Wiater Christina · CIK 0001806909 · PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,636

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.5 to $86.78, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

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June 17, 2026 Filed Jun 22, 2026 21:14 UTC SaleCommon Stock, par value $0.001 1,900,000 $77.25 $146,775,000.00
Disclosure

SEC source: 0001013594-26-000681 · form4.xml · nonDerivative · entry 1

PAULSON & CO. INC. · CIK 0001035674 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Managed Funds

Disclosed balance after: 5,843,282

F1 · ownership.direct: Paulson & Co. Inc. ("Paulson") is the investment manager of investment funds (the "Funds"). John Paulson is the controlling person of Paulson. All securities reported on this Form 4 are owned by the Funds.

F2 · ownership.direct: Each of Paulson and John Paulson may be deemed to indirectly beneficially own the securities directly owned by the Funds. Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the "Act"), the filing of this Form 4 shall not be deemed an admission by any person reporting on this Form 4 that such person, for purposes of Section 16 of the Act or otherwise, is the beneficial owner of any equity securities covered by this Form 4.

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June 15, 2026 Filed Jun 15, 2026 22:52 UTC GiftCommon Stock 10,260 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-043360 · wk-form4_1781563975.xml · nonDerivative · entry 2

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Landry Trebbi 2012 Family Grantor Trust dated 12/31/2012

Disclosed balance after: 10,260

F1 · ownership.nature: These shares are held in a trust for the benefit of the reporting person's child. The reporting person, the reporting person's spouse and a third party are trustees of the trust.

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June 15, 2026 Filed Jun 15, 2026 22:52 UTC GiftCommon Stock 10,260 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-043360 · wk-form4_1781563975.xml · nonDerivative · entry 1

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,797

Read SEC document
June 12, 2026 Filed Jun 15, 2026 22:47 UTC GrantRestricted Stock Units · Derivative 1,288 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-043348 · wk-form4_1781563652.xml · derivative · entry 1

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,288

Underlying: Common Stock · 1,288 shares

Expires not disclosed

F1 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · shares: Consists of restricted stock units under the Acadian Asset Management Inc. 2026 Equity Incentive Plan.

F3 · derivative.exercise_date: On June 12, 2026, the reporting person was granted 1,288 restricted stock units vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc.

F3 · derivative.expiration_date: On June 12, 2026, the reporting person was granted 1,288 restricted stock units vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc.

Read SEC document
June 12, 2026 Filed Jun 15, 2026 22:44 UTC
Paulson JohnDirector · 10% owner
GrantRestricted Stock Units · Derivative 2,253 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-043346 · wk-form4_1781563460.xml · derivative · entry 1

Paulson John · CIK 0001394923 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,253

Underlying: Common Stock · 2,253 shares

Expires not disclosed

F1 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · shares: Consists of restricted stock units under the Acadian Asset Management Inc. 2026 Equity Incentive Plan.

F3 · derivative.exercise_date: On June 12, 2026, the reporting person was granted 2,253 restricted stock units vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc.

F3 · derivative.expiration_date: On June 12, 2026, the reporting person was granted 2,253 restricted stock units vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc.

Read SEC document
June 12, 2026 Filed Jun 15, 2026 22:52 UTC GrantRestricted Stock Units · Derivative 1,288 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-043360 · wk-form4_1781563975.xml · derivative · entry 3

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,288

Underlying: Common Stock · 1,288 shares

Expires not disclosed

F2 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F3 · shares: Consists of restricted stock units under the Acadian Asset Management Inc. 2026 Equity Incentive Plan.

F4 · derivative.exercise_date: On June 12, 2026, the reporting person was granted 1,288 restricted stock units vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc.

F4 · derivative.expiration_date: On June 12, 2026, the reporting person was granted 1,288 restricted stock units vesting upon the earlier of June 12, 2027 and the date of the 2027 annual meeting of stockholders of Acadian Asset Management Inc.

Read SEC document
May 14, 2026 Filed May 18, 2026 20:06 UTC Exercise / conversionRestricted Stock Units · Derivative 3,286 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-035920 · wk-form4_1779134772.xml · derivative · entry 3

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,286 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F3 · derivative.exercise_date: On May 14, 2025, the reporting person was granted 3,286 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

F3 · derivative.expiration_date: On May 14, 2025, the reporting person was granted 3,286 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

Read SEC document
May 14, 2026 Filed May 18, 2026 20:06 UTC Exercise / conversionCommon Stock 3,286 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-035920 · wk-form4_1779134772.xml · nonDerivative · entry 1

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,286

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 14, 2026 Filed May 18, 2026 20:09 UTC
Paulson JohnDirector · 10% owner
Exercise / conversionRestricted Stock Units · Derivative 5,750 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-035924 · wk-form4_1779134987.xml · derivative · entry 2

Paulson John · CIK 0001394923 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,750 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_date: On May 14, 2025, the reporting person was granted 5,750 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

F2 · derivative.expiration_date: On May 14, 2025, the reporting person was granted 5,750 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

Read SEC document
May 14, 2026 Filed May 18, 2026 20:09 UTC
Paulson JohnDirector · 10% owner
Exercise / conversionCommon Stock 5,750 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-035924 · wk-form4_1779134987.xml · nonDerivative · entry 1

Paulson John · CIK 0001394923 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,510

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 14, 2026 Filed May 18, 2026 20:04 UTC Exercise / conversionRestricted Stock Units · Derivative 3,286 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-035917 · wk-form4_1779134641.xml · derivative · entry 2

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,286 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_date: On May 14, 2025, the reporting person was granted 3,286 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

F2 · derivative.expiration_date: On May 14, 2025, the reporting person was granted 3,286 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

Read SEC document
May 14, 2026 Filed May 18, 2026 20:04 UTC Exercise / conversionCommon Stock 3,286 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-035917 · wk-form4_1779134641.xml · nonDerivative · entry 1

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,057

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 04, 2026 Filed May 5, 2026 22:06 UTC SaleCommon Stock 11,208 $67.73 $759,083.10
Disclosure

SEC source: 0001628280-26-030782 · wk-form4_1778018797.xml · nonDerivative · entry 2

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,863

F2 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.56 to $67.84, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

Read SEC document
May 04, 2026 Filed May 5, 2026 22:06 UTC SaleCommon Stock 88,792 $66.87 $5,937,938.36
Disclosure

SEC source: 0001628280-26-030782 · wk-form4_1778018797.xml · nonDerivative · entry 1

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,071

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.55 to $67.47, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

Read SEC document
February 15, 2026 Filed Feb 18, 2026 22:15 UTC Exercise / conversionRestricted Stock Units · Derivative 5,180 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009235 · wk-form4_1771452956.xml · derivative · entry 7

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,246

Underlying: Common Stock · 5,180 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: On February 15, 2023, the reporting person was granted 4,059 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 11,481 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.

F4 · derivative.expiration_date: On February 15, 2023, the reporting person was granted 4,059 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 11,481 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.

Read SEC document
February 15, 2026 Filed Feb 18, 2026 22:15 UTC Tax withholdingCommon Stock 1,521 $51.85 $78,863.85
Disclosure

SEC source: 0001628280-26-009235 · wk-form4_1771452956.xml · nonDerivative · entry 4

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,614

Read SEC document
February 15, 2026 Filed Feb 18, 2026 22:15 UTC Exercise / conversionCommon Stock 5,180 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009235 · wk-form4_1771452956.xml · nonDerivative · entry 3

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,135

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
February 15, 2026 Filed Feb 18, 2026 22:05 UTC Exercise / conversionRestricted Stock Units · Derivative 9,550 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009222 · wk-form4_1771452315.xml · derivative · entry 7

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,345

Underlying: Common Stock · 9,550 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.

F4 · derivative.exercise_date: 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.

F4 · derivative.expiration_date: 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.

Read SEC document
February 15, 2026 Filed Feb 18, 2026 22:05 UTC Tax withholdingCommon Stock 4,618 $51.85 $239,443.30
Disclosure

SEC source: 0001628280-26-009222 · wk-form4_1771452315.xml · nonDerivative · entry 4

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 173,863

Read SEC document
February 15, 2026 Filed Feb 18, 2026 22:05 UTC Exercise / conversionCommon Stock 9,550 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009222 · wk-form4_1771452315.xml · nonDerivative · entry 3

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 178,481

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
February 14, 2026 Filed Feb 18, 2026 22:15 UTC Exercise / conversionRestricted Stock Units · Derivative 4,006 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009235 · wk-form4_1771452956.xml · derivative · entry 6

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,426

Underlying: Common Stock · 4,006 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.

F3 · derivative.exercise_date: On February 14, 2025, the reporting person was granted 12,018 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.

F3 · derivative.expiration_date: On February 14, 2025, the reporting person was granted 12,018 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.

Read SEC document
February 14, 2026 Filed Feb 18, 2026 22:15 UTC Tax withholdingCommon Stock 1,176 $51.85 $60,975.60
Disclosure

SEC source: 0001628280-26-009235 · wk-form4_1771452956.xml · nonDerivative · entry 2

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,955

Read SEC document
February 14, 2026 Filed Feb 18, 2026 22:15 UTC Exercise / conversionCommon Stock 4,006 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009235 · wk-form4_1771452956.xml · nonDerivative · entry 1

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,131

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
February 14, 2026 Filed Feb 18, 2026 22:05 UTC Exercise / conversionRestricted Stock Units · Derivative 5,755 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009222 · wk-form4_1771452315.xml · derivative · entry 6

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,895

Underlying: Common Stock · 5,755 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.

F3 · derivative.exercise_date: 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.

F3 · derivative.expiration_date: 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.

Read SEC document
February 14, 2026 Filed Feb 18, 2026 22:05 UTC Tax withholdingCommon Stock 2,782 $51.85 $144,246.70
Disclosure

SEC source: 0001628280-26-009222 · wk-form4_1771452315.xml · nonDerivative · entry 2

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 168,931

Read SEC document
February 14, 2026 Filed Feb 18, 2026 22:05 UTC Exercise / conversionCommon Stock 5,755 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009222 · wk-form4_1771452315.xml · nonDerivative · entry 1

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 171,713

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
February 13, 2026 Filed Feb 18, 2026 22:15 UTC GrantRestricted Stock Units · Derivative 5,407 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009235 · wk-form4_1771452956.xml · derivative · entry 5

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,432

Underlying: Common Stock · 5,407 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_date: On February 13, 2026, the reporting person was granted 5,407 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.

F2 · derivative.expiration_date: On February 13, 2026, the reporting person was granted 5,407 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.

Read SEC document
February 13, 2026 Filed Feb 18, 2026 16:52 UTC
Young KellyDirector · President and CEO
GrantRestricted Stock Units · Derivative 48,748 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009181 · wk-form4_1771451533.xml · derivative · entry 1

Young Kelly · CIK 0002047359 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,748

Underlying: Common Stock · 48,748 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_date: On February 13, 2026, the reporting person was granted 48,748 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.

F2 · derivative.expiration_date: On February 13, 2026, the reporting person was granted 48,748 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.

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February 13, 2026 Filed Feb 18, 2026 22:05 UTC GrantRestricted Stock Units · Derivative 21,602 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009222 · wk-form4_1771452315.xml · derivative · entry 5

Hart Richard Jonathan · CIK 0001810382 · CLO and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,650

Underlying: Common Stock · 21,602 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

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February 13, 2026 Filed Feb 18, 2026 21:55 UTC
Hynes ScottChief Financial Officer
GrantRestricted Stock Units · Derivative 4,888 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001628280-26-009201 · wk-form4_1771451739.xml · derivative · entry 1

Hynes Scott · CIK 0002070843 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,888

Underlying: Common Stock · 4,888 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_date: On February 13, 2026, the reporting person was granted 4,888 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.

F2 · derivative.expiration_date: On February 13, 2026, the reporting person was granted 4,888 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.

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February 11, 2026 Filed Feb 12, 2026 23:14 UTC SaleCommon Stock 28,753 $51.30 $1,475,028.90
Disclosure

SEC source: 0001628280-26-007838 · wk-form4_1770938059.xml · nonDerivative · entry 1

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Robert J. Chersi 2012 Family Trust

Disclosed balance after: 37,384

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.00 to $51.70, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

F2 · ownership.nature: These shares are held in trust for the benefit of the reporting person's children. The reporting person's spouse is the trustee of the trust.

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February 10, 2026 Filed Feb 12, 2026 23:10 UTC SaleCommon Stock 9,691 $51.22 $496,329.41
Disclosure

SEC source: 0001628280-26-007836 · wk-form4_1770937799.xml · nonDerivative · entry 1

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,771

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.92 to $51.67, inclusive. The reporting person undertakes to provide to Acadian Asset Management Inc., any securityholder of Acadian Asset Management Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

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September 03, 2025 Filed Sep 5, 2025 20:40 UTC SaleCommon Stock, par value $0.001 1,206,839 $47.69 $57,554,151.91
Disclosure

SEC source: 0001013594-25-001139 · form4.xml · nonDerivative · entry 1

PAULSON & CO. INC. · CIK 0001035674 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Managed Funds

Disclosed balance after: 7,743,282

F1 · ownership.direct: Paulson & Co. Inc. ("Paulson") is the investment manager of investment funds (the "Funds"). John Paulson is the controlling person of Paulson. All securities reported on this Form 4 are owned by the Funds.

F2 · ownership.direct: Each of Paulson and John Paulson may be deemed to indirectly beneficially own the securities directly owned by the Funds. Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the "Act"), the filing of this Form 4 shall not be deemed an admission by any person reporting on this Form 4 that such person, for purposes of Section 16 of the Act or otherwise, is the beneficial owner of any equity securities covered by this Form 4.

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June 10, 2025 Filed Jun 10, 2025 20:54 UTC GiftCommon Stock 27,986 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000049 · wk-form4_1749588851.xml · nonDerivative · entry 2

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Robert J. Chersi 2012 Family Trust

Disclosed balance after: 66,137

F1 · ownership.nature: These shares are held in trust for the benefit of the reporting person's children. The reporting person's spouse is the trustee of the trust.

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June 10, 2025 Filed Jun 10, 2025 20:54 UTC GiftCommon Stock 27,986 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000049 · wk-form4_1749588851.xml · nonDerivative · entry 1

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

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May 14, 2025 Filed May 15, 2025 20:29 UTC GrantRestricted Stock Units · Derivative 3,286 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000038 · wk-form4_1747340977.xml · derivative · entry 4

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,286

Underlying: Common Stock · 3,286 shares

Expires not disclosed

F2 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F4 · shares: Consists of restricted stock units issued under the Acadian Asset Management Inc. Non-Employee Directors' Equity Incentive Plan.

F5 · derivative.exercise_date: On May 14, 2025, the reporting person was granted 3,286 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

F5 · derivative.expiration_date: On May 14, 2025, the reporting person was granted 3,286 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

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May 14, 2025 Filed May 15, 2025 21:53 UTC
Paulson JohnDirector · 10% owner
GrantRestricted Stock Units · Derivative 5,750 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000041 · wk-form4_1747346025.xml · derivative · entry 3

Paulson John · CIK 0001394923 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,750

Underlying: Common Stock · 5,750 shares

Expires not disclosed

F1 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F3 · shares: Consists of restricted stock units issued under the Acadian Asset Management Inc. Non-Employee Directors' Equity Incentive Plan.

F4 · derivative.exercise_date: On May 14, 2025, the reporting person was granted 5,750 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

F4 · derivative.expiration_date: On May 14, 2025, the reporting person was granted 5,750 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

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May 14, 2025 Filed May 15, 2025 20:30 UTC GrantRestricted Stock Units · Derivative 3,286 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000039 · wk-form4_1747341015.xml · derivative · entry 3

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,286

Underlying: Common Stock · 3,286 shares

Expires not disclosed

F1 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F3 · shares: Consists of restricted stock units issued under the Acadian Asset Management Inc. Non-Employee Directors' Equity Incentive Plan.

F4 · derivative.exercise_date: On May 14, 2025, the reporting person was granted 3,286 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

F4 · derivative.expiration_date: On May 14, 2025, the reporting person was granted 3,286 restricted stock units vesting upon the earlier of May 14, 2026 and the date of the 2026 annual meeting of stockholders of Acadian Asset Management Inc.

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May 13, 2025 Filed May 15, 2025 20:29 UTC Exercise / conversionRestricted Stock Units · Derivative 4,437 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000038 · wk-form4_1747340977.xml · derivative · entry 3

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,437 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F3 · derivative.exercise_date: On June 7, 2024, the reporting person was granted 4,437 restricted stock units vesting upon the earlier of June 7, 2025 and the date of the 2025 annual meeting of stockholders of Acadian Asset Management Inc., which was held on May 13, 2025.

F3 · derivative.expiration_date: On June 7, 2024, the reporting person was granted 4,437 restricted stock units vesting upon the earlier of June 7, 2025 and the date of the 2025 annual meeting of stockholders of Acadian Asset Management Inc., which was held on May 13, 2025.

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May 13, 2025 Filed May 15, 2025 20:29 UTC Exercise / conversionCommon Stock 4,437 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000038 · wk-form4_1747340977.xml · nonDerivative · entry 1

Chersi Robert J · CIK 0001668247 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,986

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 13, 2025 Filed May 15, 2025 21:53 UTC
Paulson JohnDirector · 10% owner
Exercise / conversionRestricted Stock Units · Derivative 7,764 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000041 · wk-form4_1747346025.xml · derivative · entry 2

Paulson John · CIK 0001394923 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,764 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_date: On June 7, 2024, the reporting person was granted 7,764 restricted stock units vesting upon the earlier of June 7, 2025 and the date of the 2025 annual meeting of stockholders of Acadian Asset Management Inc., which was held on May 13, 2025.

F2 · derivative.expiration_date: On June 7, 2024, the reporting person was granted 7,764 restricted stock units vesting upon the earlier of June 7, 2025 and the date of the 2025 annual meeting of stockholders of Acadian Asset Management Inc., which was held on May 13, 2025.

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May 13, 2025 Filed May 15, 2025 21:53 UTC
Paulson JohnDirector · 10% owner
Exercise / conversionCommon Stock 7,764 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000041 · wk-form4_1747346025.xml · nonDerivative · entry 1

Paulson John · CIK 0001394923 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,760

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 13, 2025 Filed May 15, 2025 20:30 UTC Exercise / conversionRestricted Stock Units · Derivative 4,437 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000039 · wk-form4_1747341015.xml · derivative · entry 2

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,437 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F1 · derivative.exercise_price: Each restricted stock unit represents a right to receive one share of common stock of Acadian Asset Management Inc.

F2 · derivative.exercise_date: On June 7, 2024, the reporting person was granted 4,437 restricted stock units vesting upon the earlier of June 7, 2025 and the date of the 2025 annual meeting of stockholders of Acadian Asset Management Inc., which was held on May 13, 2025.

F2 · derivative.expiration_date: On June 7, 2024, the reporting person was granted 4,437 restricted stock units vesting upon the earlier of June 7, 2025 and the date of the 2025 annual meeting of stockholders of Acadian Asset Management Inc., which was held on May 13, 2025.

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May 13, 2025 Filed May 15, 2025 20:30 UTC Exercise / conversionCommon Stock 4,437 $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000039 · wk-form4_1747341015.xml · nonDerivative · entry 1

Trebbi Barbara · CIK 0001730619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,462

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
February 15, 2025 Filed Feb 20, 2025 00:15 UTC Exercise / conversionRestricted Stock Units · Derivative 5,180 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001748824-25-000014 · wk-form4_1740010549.xml · derivative · entry 4

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,025

Underlying: Common Stock · 5,180 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive one share of common stock of Acadian Asset Management Inc.

F3 · derivative.exercise_date: On February 15, 2023, the reporting person was granted 4,059 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 11,481 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.

F3 · derivative.expiration_date: On February 15, 2023, the reporting person was granted 4,059 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 11,481 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.

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February 15, 2025 Filed Feb 20, 2025 00:15 UTC Tax withholdingCommon Stock 1,521 $25.69 $39,074.49
Disclosure

SEC source: 0001748824-25-000014 · wk-form4_1740010549.xml · nonDerivative · entry 2

Wiater Christina · CIK 0001806909 · PFO / PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,125

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.