Acadian Asset Management Inc. (AAMI) Insider Trading

Last 12 months

Insiders sold $10.9M and bought nothing on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. CLO and CAO Richard Jonathan Hart sold $6.7M on May 4, 58% of their stake, outside a plan. The last open-market buy by an executive or director was in Jun 2020.

Net open-market

−$10.9M

0 buys · 4 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 4

executives and directors

Last open-market buy

Jun 2020

Jun 24, 2020

Get an email when AAMI's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Aug 3 – 4	Christina Wiater PAO	SoldNo plan 4 parts	25,614	$87.26 average	$2.24M	100%	Form 4
Jun 17	Paulson & CO. Inc. Large holder	SoldNo plan	1,900,000	$77.25	$147M	25%	Form 4
May 4	Richard Jonathan Hart CLO and CAO	SoldNo plan 2 parts	100,000	$66.97 average	$6.7M	58%	Form 4
Feb 11	Robert J Chersi Director	SoldNo plan	28,753	$51.30	$1.48M	43%	Form 4
Feb 10	Barbara Trebbi Director	SoldNo plan	9,691	$51.22	$496k	21%	Form 4
Sep 3, 2025	Paulson & CO. Inc. Large holder	SoldNo plan	1,206,839	$47.69	$57.6M	13%	Form 4
Nov 11, 2024	Richard Jonathan Hart Chief Legal Officer	SoldNo plan	70,000	$28.52	$2M	31%	Form 4

Aug 3 – 4No plan
Christina Wiater
PAO · sold 25,614 at avg $87.26
$2.24M
100% of stake
Jun 17No plan
Paulson & CO. Inc.
Large holder · sold 1,900,000 at $77.25
$147M
25% of stake
May 4No plan
Richard Jonathan Hart
CLO and CAO · sold 100,000 at avg $66.97
$6.7M
58% of stake
Feb 11No plan
Robert J Chersi
Director · sold 28,753 at $51.30
$1.48M
43% of stake
Feb 10No plan
Barbara Trebbi
Director · sold 9,691 at $51.22
$496k
21% of stake
Sep 3, 2025No plan
Paulson & CO. Inc.
Large holder · sold 1,206,839 at $47.69
$57.6M
13% of stake
Nov 11, 2024No plan
Richard Jonathan Hart
Chief Legal Officer · sold 70,000 at $28.52
$2M
31% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch AAMI, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in AAMI's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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