Acadian Asset Management AAMI Insider Ownership

NYSE AAMI
$93.45 +1.29 (+1.40%)
As of: Oct 19, 2026 · 3:59 PM EDT

Insider Holdings by Owner

6.36Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
17.96%
▼-0.072% pp QoQ
Shares Held by Insiders
6.40Mn
filed for Sep 2026
▼-0.40% QoQ
Shares Outstanding
35.62Mn
35,624,977 shares
Direct Holdings
507.18K
Indirect: 5.89Mn
Net Shares Traded (QoQ)
-25.61K
net selling in Sep 2026
Insiders Holding Shares
6
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Over the past 12 months, Acadian Asset Management insiders sold $157.68 million of stock on the open market (2.06Mn shares) and made no open-market purchases.

Form 4 Holdings

Insiders Holding AAMI

Insiders 6
Shares held 6.36Mn
Of outstanding 17.85%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Co. Inc. Paulson TenPercentOwner 0 5,843,282 5,843,282 91.9% 22 Jun, 2026
2 Suren Rana President And Ceo 371,726 0 371,726 5.8% 02 Oct, 2024
3 Richard Jonathan Hart Clo And Cao 73,863 0 73,863 1.2% 05 May, 2026
4 Barbara Trebbi Director 28,797 10,260 39,057 0.6% 15 Jun, 2026
5 John Paulson Director, TenPercentOwner 29,510 0 29,510 0.5% 18 May, 2026
6 Robert J Chersi Director 3,286 0 3,286 0.1% 18 May, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

216 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
03 Aug, 2026 Christina Wiater Pao Disposed S 7,978 $86.61 $690.96K 17,636 Direct
03 Aug, 2026 Christina Wiater Pao Disposed S 17,389 $87.49 $1.52Mn 247 Direct
03 Aug, 2026 Christina Wiater Pao Disposed S 3 $88.11 $264 244 Direct
04 Aug, 2026 Christina Wiater Pao Disposed S 244 $92.36 $22.53K 0 Direct
17 Jun, 2026 Co. Inc. Paulson TenPercentOwner Disposed S 1,900,000 $77.25 $146.78Mn 5,843,282 Indirect
12 Jun, 2026 Robert J Chersi Director Acquired A 1,288 $0.00 $0 1,288 Direct
15 Jun, 2026 Barbara Trebbi Director Disposed G 10,260 $0.00 $0 28,797 Direct
12 Jun, 2026 John Paulson Director, TenPercentOwner Acquired A 2,253 $0.00 $0 2,253 Direct
15 Jun, 2026 Barbara Trebbi Director Acquired G 10,260 $0.00 $0 10,260 Indirect
12 Jun, 2026 Barbara Trebbi Director Acquired A 1,288 $0.00 $0 1,288 Direct
14 May, 2026 Robert J Chersi Director Acquired M 3,286 $0.00 $0 3,286 Direct
14 May, 2026 John Paulson Director, TenPercentOwner Acquired M 5,750 $0.00 $0 29,510 Direct
14 May, 2026 Barbara Trebbi Director Acquired M 3,286 $0.00 $0 39,057 Direct
14 May, 2026 John Paulson Director, TenPercentOwner Disposed M 5,750 $0.00 $0 0 Direct
14 May, 2026 Barbara Trebbi Director Disposed M 3,286 $0.00 $0 0 Direct
14 May, 2026 Robert J Chersi Director Disposed M 3,286 $0.00 $0 0 Direct
04 May, 2026 Richard Jonathan Hart Clo And Cao Disposed S 88,792 $66.87 $5.94Mn 85,071 Direct
04 May, 2026 Richard Jonathan Hart Clo And Cao Disposed S 11,208 $67.73 $759.08K 73,863 Direct
13 Feb, 2026 Kelly Young President And Ceo Acquired A 48,748 $0.00 $0 48,748 Direct
13 Feb, 2026 Scott Hynes Chief Financial Officer Acquired A 4,888 $0.00 $0 4,888 Direct