ACKMAN WILLIAM A

10% owner at WENDYS INTERNATIONAL INC · on record since Mar 17, 2006
10% owner at CERIDIAN LLC · on record since Feb 28, 2007
10% owner at OLD STONE CORP · on record since Mar 22, 2007
10% owner at BARNES & NOBLE INC · on record since Sep 26, 2007
Former Director at GGP, Inc. (fka General Growth Properties Inc. & predecessor to General Growth Properties, Inc.) · on record since Mar 10, 2010
10% owner at BORDERS GROUP INC · on record since Nov 29, 2007
See footnote (1) at BARNES & NOBLE INC · on record since Sep 19, 2008
Former 10% Owner at Winthrop Realty Liquidating Trust · on record since Jul 2, 2003
Director at GGP, Inc. (fka General Growth Properties Inc. & predecessor to General Growth Properties, Inc.) · on record since Jun 15, 2009
See footnote (3). at CANADIAN PACIFIC KANSAS CITY LTD/CN · on record since Sep 7, 2016
Director at Howard Hughes Corp · on record since Nov 12, 2010
10% owner at Howard Hughes Corp · on record since Nov 12, 2010
10% owner at Beam Suntory Inc. · on record since Oct 8, 2010
10% owner at Old COPPER Company, Inc. · on record since Oct 8, 2010
Director at Old COPPER Company, Inc. · on record since May 24, 2011
10% owner at DENNY'S Corp · on record since Oct 17, 2003
Director at Seaport Entertainment Group Inc. · on record since Apr 23, 2026
10% owner at Seaport Entertainment Group Inc. · on record since Apr 23, 2026
Director at · on record since Apr 23, 2026
Chief Executive Officer at · on record since Apr 23, 2026
10% owner at · on record since Apr 23, 2026
Director at · on record since Apr 23, 2026
10% owner at · on record since Apr 23, 2026
Chief Executive Officer at · on record since Apr 28, 2026
Director at · on record since Apr 29, 2026
10% owner at · on record since May 24, 2012
10% owner at · on record since Jan 24, 2014
Director at · on record since Dec 19, 2016
Director at · on record since Oct 7, 2014
Director at · on record since Feb 4, 2015
10% owner at · on record since Oct 21, 2004
Director at · on record since Mar 16, 2016
Director at · on record since Jan 4, 2016
See footnote (4). at · on record since May 12, 2016
See footnote (3) at · on record since May 3, 2017
10% owner at · on record since Mar 2, 2018
See Remarks at · on record since Feb 5, 2019
Director at · on record since Jul 23, 2020
Chief Executive Officer at · on record since Jul 23, 2020
10% owner at · on record since Jul 23, 2020
See Remarks at · on record since May 18, 2022
CEO & Chairman at · on record since Apr 29, 2026
10% owner at · on record since Apr 29, 2026

Insider trading activity of ACKMAN WILLIAM A

Transactions on record: 154; since Sep 22, 2003

Open-market buys: 61; $1.3B

Open-market sells: 19; $794.9M

Companies traded: 11; last filing Aug 19, 2026

Figures computed from official regulatory filings — .

Companies where ACKMAN WILLIAM A has traded

11 tx · $19M · Aug 19, 2026
5 tx · $240.9M · May 1, 2026
2 tx · Apr 23, 2026
18 tx · $49M · Nov 17, 2023
73 tx · $1.2B · Jun 27, 2023
13 tx · $695.3M · May 5, 2022
1 tx · $20.1M · Nov 14, 2016
16 tx · $100.1M · May 24, 2011
2 tx · Mar 10, 2010
8 tx · $6.3M · Oct 3, 2008
5 tx · $70.5K · Jan 27, 2004

Track record of ACKMAN WILLIAM A

Statistical track record

Free account

Open-market buys: 65

Last buy: Apr 30, 2026

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of ACKMAN WILLIAM A

Co-insiders of ACKMAN WILLIAM A

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
PERSHING SQUARE INC.Listing unverified	Aug 19, 2026	Gift	-10,000,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Other	-6,874,237	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	AwardD (derivative)	92,878,204	—	n/a (No price was disclosed in the filing)		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Gift	-300,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Buy	81,762	22.61 USD	$1.8M	conv 30First in 12mo	SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Buy	58,698	24.20 USD	$1.4M	conv 28First in 12mo	SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Buy	659,540	23.88 USD	$15.7M	conv 76Unusual sizeFirst in 12mo	SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Other	700,000	—	n/a (No price was disclosed in the filing)		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Other	168,200	—	n/a (No price was disclosed in the filing)		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Award	10,489	—	n/a (No price was disclosed in the filing)		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Other	4,240	—	n/a (No price was disclosed in the filing)		SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	500,000	42.00 USD	$21M	conv 75ClusterUnusual size+1	SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	21,200	50.00 USD	$1.1M	conv 62ClusterFirst in 12mo	SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	841,000	50.00 USD	$42.1M	conv 91ClusterUnusual size+1	SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	34,971	50.00 USD	$1.7M	conv 71ClusterFirst in 12mo	SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	3,500,000	50.00 USD	$175M	conv 91ClusterUnusual size+1	SEC
Pershing Square SPARC Holdings, Ltd./DEListing unverified	Apr 23, 2026	Other	0	—	n/a (No price was disclosed in the filing)		SEC
Pershing Square SPARC Holdings, Ltd./DEListing unverified	Apr 23, 2026	OtherD (derivative)	0	—	n/a (No price was disclosed in the filing)		SEC
Howard Hughes Holdings Inc.Listing unverified	Nov 17, 2023	Buy	67,200	74.34 USD	$5M	conv 41Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Nov 17, 2023	Buy	67,200	74.72 USD	$5M	conv 45ClusterUnusual size	SEC
Howard Hughes Holdings Inc.Listing unverified	Nov 17, 2023	Buy	67,200	73.95 USD	$5M	conv 39Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Oct 27, 2023	Buy	31,924	65.95 USD	$2.1M	conv 25Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Oct 27, 2023	Buy	24,946	66.94 USD	$1.7M	conv 24Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Oct 27, 2023	Buy	59,200	67.35 USD	$4M	conv 38Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Oct 24, 2023	Buy	50,041	66.91 USD	$3.3M	conv 34Cluster	SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
PERSHING SQUARE INC.Listing unverified	Aug 19, 2026	Gift	-10,000,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Other	-6,874,237	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	AwardD (derivative)	92,878,204	—	n/a (No price was disclosed in the filing)		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Gift	-300,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Buy	81,762	22.61 USD	$1.8M	conv 30First in 12mo	SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Buy	58,698	24.20 USD	$1.4M	conv 28First in 12mo	SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Buy	659,540	23.88 USD	$15.7M	conv 76Unusual sizeFirst in 12mo	SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Other	700,000	—	n/a (No price was disclosed in the filing)		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Other	168,200	—	n/a (No price was disclosed in the filing)		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Award	10,489	—	n/a (No price was disclosed in the filing)		SEC
PERSHING SQUARE INC.Listing unverified	May 4, 2026	Other	4,240	—	n/a (No price was disclosed in the filing)		SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	500,000	42.00 USD	$21M	conv 75ClusterUnusual size+1	SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	21,200	50.00 USD	$1.1M	conv 62ClusterFirst in 12mo	SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	841,000	50.00 USD	$42.1M	conv 91ClusterUnusual size+1	SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	34,971	50.00 USD	$1.7M	conv 71ClusterFirst in 12mo	SEC
Pershing Square USA, Ltd.Listing unverified	May 1, 2026	Buy	3,500,000	50.00 USD	$175M	conv 91ClusterUnusual size+1	SEC
Pershing Square SPARC Holdings, Ltd./DEListing unverified	Apr 23, 2026	Other	0	—	n/a (No price was disclosed in the filing)		SEC
Pershing Square SPARC Holdings, Ltd./DEListing unverified	Apr 23, 2026	OtherD (derivative)	0	—	n/a (No price was disclosed in the filing)		SEC
Howard Hughes Holdings Inc.Listing unverified	Nov 17, 2023	Buy	67,200	74.34 USD	$5M	conv 41Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Nov 17, 2023	Buy	67,200	74.72 USD	$5M	conv 45ClusterUnusual size	SEC
Howard Hughes Holdings Inc.Listing unverified	Nov 17, 2023	Buy	67,200	73.95 USD	$5M	conv 39Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Oct 27, 2023	Buy	31,924	65.95 USD	$2.1M	conv 25Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Oct 27, 2023	Buy	24,946	66.94 USD	$1.7M	conv 24Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Oct 27, 2023	Buy	59,200	67.35 USD	$4M	conv 38Cluster	SEC
Howard Hughes Holdings Inc.Listing unverified	Oct 24, 2023	Buy	50,041	66.91 USD	$3.3M	conv 34Cluster	SEC