Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Seaport Entertainment Group Inc.

CIK 0002009684SEG· quarter ending 2026-06-30

Shares outstanding

12,809,536

as of 2026-08-03 · 10-Q cover page, filed 2026-08-05

Held by 13F filers

11,128,331

86.9% of shares outstanding

Holders

116

-2 vs 2026-03-31 · 14 new, 16 exited

Value

$296.0M

shares +3.8% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-05, as of 2026-08-03)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	SEG · NYSE	12,809,536	11,128,331	86.9%	116	812215200

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	812215200	COMMON STOCK	116	11,128,331	12,809,536	86.9%	$296.0M	1 call / 1 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings. 1 further CUSIPs map to this company (mostly bonds) but no 13F filer held them this quarter.

Top holders (116 of 116 · 812215200)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	PERSHING SQUARE INC.	5,023,780	39.22%	$133.6M	NEW
2	KAHN BROTHERS GROUP INC	917,005	7.16%	$24.4M	+23,778 (+2.7%)
3	GATE CITY CAPITAL MANAGEMENT, LLC	723,248	5.65%	$19.2M	+33,801 (+4.9%)
4	Rubric Capital Management LP	568,530	4.44%	$15.1M	—
5	BlackRock, Inc.	553,120	4.32%	$14.7M	+47,491 (+9.4%)
6	DIMENSIONAL FUND ADVISORS LP	396,566	3.10%	$10.5M	-58,581 (-12.9%)
7	VANGUARD PORTFOLIO MANAGEMENT LLC	384,200	3.00%	$10.2M	+341,138 (+792.2%)
8	VANGUARD CAPITAL MANAGEMENT LLC	343,549	2.68%	$9.1M	+15,864 (+4.8%)
9	Cerity Partners LLC	314,955	2.46%	$8.4M	-3,964 (-1.2%)
10	Solas Capital Management, LLC	212,892	1.66%	$5.7M	-10,026 (-4.5%)
11	GEODE CAPITAL MANAGEMENT, LLC	208,136	1.62%	$5.5M	+23,116 (+12.5%)
12	STATE STREET CORP	185,838	1.45%	$4.9M	+7,857 (+4.4%)
13	Rangeley Capital, LLC	153,517	1.20%	$4.1M	—
14	GOLDMAN SACHS GROUP INC	117,344	0.92%	$3.1M	+13,148 (+12.6%)
15	Peapod Lane Capital LLC	109,851	0.86%	$2.9M	+17,345 (+18.8%)
16	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	63,587	0.50%	$1.7M	+1,581 (+2.5%)
17	NORTHERN TRUST CORP	60,461	0.47%	$1.6M	+3,308 (+5.8%)
18	LPL Financial LLC	51,711	0.40%	$1.4M	-1,055 (-2.0%)
19	AQR CAPITAL MANAGEMENT LLC	51,134	0.40%	$1.4M	+27,904 (+120.1%)
20	VANGUARD FIDUCIARY TRUST CO	50,880	0.40%	$1.4M	+2,616 (+5.4%)
21	O'Keefe Stevens Advisory, Inc.	49,085	0.38%	$1.3M	+1,415 (+3.0%)
22	HORIZON KINETICS ASSET MANAGEMENT LLC	42,503	0.33%	$1.1M	-9,937 (-18.9%)
23	Trexquant Investment LP	34,171	0.27%	$909K	+16,601 (+94.5%)
24	PRICE T ROWE ASSOCIATES INC /MD/	31,663	0.25%	$843K	+6,012 (+23.4%)
25	Gem Investment Advisors, LLC	28,012	0.22%	$745K	-1,726 (-5.8%)
26	RENAISSANCE TECHNOLOGIES LLC	27,999	0.22%	$745K	-54,301 (-66.0%)
27	Quantinno Capital Management LP	27,643	0.22%	$735K	+3,502 (+14.5%)
28	MORGAN STANLEY	27,027	0.21%	$719K	+11,493 (+74.0%)
29	Bank of New York Mellon Corp	22,604	0.18%	$601K	+2,088 (+10.2%)
30	INGALLS & SNYDER LLC	22,102	0.17%	$588K	-32 (-0.1%)
31	UBS Group AG	22,079	0.17%	$587K	-2,381 (-9.7%)
32	XTX Topco Ltd	20,312	0.16%	$540K	+833 (+4.3%)
33	PRINCIPAL FINANCIAL GROUP INC	18,226	0.14%	$485K	-184 (-1.0%)
34	COMMERCE BANK	17,557	0.14%	$467K	—
35	BRIDGEWAY CAPITAL MANAGEMENT, LLC	16,785	0.13%	$446K	—
36	State of New Jersey Common Pension Fund D	15,891	0.12%	$423K	—
37	AMERICAN CENTURY COMPANIES INC	15,180	0.12%	$404K	+4,536 (+42.6%)
38	Marquette Asset Management, LLC	14,749	0.12%	$392K	NEW
39	LAZARD ASSET MANAGEMENT LLC	14,624	0.11%	$389K	-32,844 (-69.2%)
40	Moran Wealth Management, LLC	14,330	0.11%	$381K	+3,395 (+31.0%)
41	Tidal Investments LLC	14,247	0.11%	$379K	-1,604 (-10.1%)
42	Nuveen, LLC	13,815	0.11%	$367K	—
43	CITIZENS FINANCIAL GROUP INC/RI	11,660	0.09%	$310K	—
44	DEUTSCHE BANK AG\	11,061	0.09%	$294K	+2,641 (+31.4%)
45	GABELLI FUNDS LLC	9,182	0.07%	$244K	NEW
46	Invesco Ltd.	9,133	0.07%	$243K	NEW
47	BANK OF AMERICA CORP /DE/	8,933	0.07%	$238K	NEW
48	Empirical Asset Management, LLC	8,600	0.07%	$229K	NEW
49	RHUMBLINE ADVISERS	8,246	0.06%	$219K	+2,476 (+42.9%)
50	Quinn Opportunity Partners LLC	8,016	0.06%	$213K	NEW
51	INDEPENDENT INVESTORS INC	7,584	0.06%	$202K	NEW
52	WELLS FARGO & COMPANY/MN	6,520	0.05%	$173K	+3,532 (+118.2%)
53	MetLife Investment Management, LLC	4,956	0.04%	$132K	—
54	Russell Investments Group, Ltd.	4,092	0.03%	$109K	+3,414 (+503.5%)
55	CITIGROUP INC	3,681	0.03%	$98K	+3,156 (+601.1%)
56	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	3,493	0.03%	$93K	-96 (-2.7%)
57	JPMORGAN CHASE & CO	3,151	0.02%	$86K	-2,203 (-41.1%)
58	Vanguard Global Advisers, LLC	2,993	0.02%	$80K	—
59	Police & Firemen's Retirement System of New Jersey	1,737	0.01%	$46K	—
60	Arax Advisory Partners	1,472	0.01%	$39K	NEW
61	NEW YORK STATE COMMON RETIREMENT FUND	1,454	0.01%	$39K	—
62	STRS OHIO	1,400	0.01%	$37K	—
63	BNP PARIBAS FINANCIAL MARKETS	1,300	0.01%	$35K	-418 (-24.3%)
64	BARCLAYS PLC	1,220	0.01%	$32K	-267 (-18.0%)
65	Hilltop National Bank	1,013	0.01%	$27K	—
66	FMR LLC	933	0.01%	$25K	+11 (+1.2%)
67	ROYAL BANK OF CANADA	929	0.01%	$24K	+713 (+330.1%)
68	Ameritas Investment Partners, Inc.	762	0.01%	$20K	—
69	NISA INVESTMENT ADVISORS, LLC	709	0.01%	$19K	-491 (-40.9%)
70	Legal & General Group Plc	675	0.01%	$18K	—
71	Tower Research Capital LLC (TRC)	468	0.00%	$12K	-856 (-64.7%)
72	Versant Capital Management, Inc	334	0.00%	$9K	—
73	Cullen/Frost Bankers, Inc.	207	0.00%	$6K	—
74	ASSETMARK, INC	160	0.00%	$4K	+80 (+100.0%)
75	Sterling Capital Management LLC	153	0.00%	$4K	-94 (-38.1%)
76	MONTAG A & ASSOCIATES INC	133	0.00%	$4K	—
77	Allworth Financial LP	119	0.00%	$3K	+95 (+395.8%)
78	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	104	0.00%	$3K	-299 (-74.2%)
79	Quent Capital, LLC	92	0.00%	$2K	-580 (-86.3%)
80	GAMMA Investing LLC	87	0.00%	$2K	-18 (-17.1%)
81	JONES FINANCIAL COMPANIES LLLP	74	0.00%	$2K	—
82	NATIXIS	64	0.00%	$2K	—
83	EverSource Wealth Advisors, LLC	61	0.00%	$2K	+27 (+79.4%)
84	Leonteq Securities AG	44	0.00%	$1K	—
85	Essential Partners LLC	41	0.00%	$1K	-245 (-85.7%)
86	Costello Asset Management, INC	36	0.00%	$958	—
87	Lummis Asset Management, LP	36	0.00%	$958	—
88	ROTHSCHILD INVESTMENT LLC	33	0.00%	$878	+25 (+312.5%)
89	PNC Financial Services Group, Inc.	31	0.00%	$825	-13 (-29.5%)
90	Global Retirement Partners, LLC	31	0.00%	$825	NEW
91	IFP Advisors, Inc	29	0.00%	$771	+25 (+625.0%)
92	McMillan Office, Inc.	28	0.00%	$745	—
93	Farther Finance Advisors, LLC	27	0.00%	$718	+25 (+1250.0%)
94	Smartleaf Asset Management LLC	16	0.00%	$435	—
95	SBI Securities Co., Ltd.	14	0.00%	$372	—
96	North Star Investment Management Corp.	13	0.00%	$346	—
97	OSAIC HOLDINGS, INC.	10	0.00%	$265	+2 (+25.0%)
98	Ancora Advisors LLC	9	0.00%	$239	—
99	True Wealth Design, LLC	9	0.00%	$240	+1 (+12.5%)
100	Truvestments Capital LLC	7	0.00%	$186	—
101	SIGNATUREFD, LLC	6	0.00%	$160	—
102	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	5	0.00%	$133	—
103	Clearstead Advisors, LLC	5	0.00%	$134	NEW
104	Covestor Ltd	5	0.00%	$0	—
105	Fortitude Family Office, LLC	5	0.00%	$133	NEW
106	FIDUCIARY FINANCIAL ADVISORS	4	0.00%	$106	NEW
107	Transamerica Financial Advisors, LLC	3	0.00%	$79	—
108	Parallel Advisors, LLC	3	0.00%	$80	—
109	US BANCORP \DE\	3	0.00%	$80	—
110	SJS Investment Consulting Inc.	3	0.00%	$80	+2 (+200.0%)
111	AMERIFLEX GROUP, INC.	1	0.00%	$27	NEW
112	Rockefeller Capital Management L.P.	1	0.00%	$27	—
113	Game Plan Financial Advisors, LLC	1	0.00%	$27	—
114	Federation des caisses Desjardins du Quebec	1	0.00%	$27	—
115	FIFTH THIRD BANCORP	1	0.00%	$27	—
116	Sachetta, LLC	1	0.00%	$27	—

Exited since 2026-03-31 (16 filers; largest 16 shown)

Pershing Square Capital Management, L.P.	−5,023,780
Marnell Management LLC	−32,300
CITADEL ADVISORS LLC	−25,800
ArrowMark Colorado Holdings LLC	−18,406
Odyssean, LLC	−9,723
Byrne Asset Management LLC	−6,320
Aquatic Capital Management LLC	−5,216
CWM, LLC	−1,592
MSRH, LLC	−1,254
Focus Partners Wealth	−596
BAYBAN	−20
Greykasell Wealth Strategies, Inc.	−18
Root Financial Partners, LLC	−9
Sunbelt Securities, Inc.	−7
MAI Capital Management	−7
Advisory Services Network, LLC	−5

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
Gate City Capital Management, LLC	SCHEDULE 13G	2026-05-15	2026-03-31	689,447	5.4%
Michael Melby	SCHEDULE 13G	2026-05-15	2026-03-31	689,447	5.4%
KAHN BROTHERS GROUP INC	SCHEDULE 13G	2026-05-08	2026-05-08	893,227	7%
Beryl Capital Management LLC	SCHEDULE 13G/A	2025-02-13	2024-12-31	336,628	2.7%
Beryl Capital Management LP	SCHEDULE 13G/A	2025-02-13	2024-12-31	336,628	2.7%
Beryl Capital Partners II LP	SCHEDULE 13G/A	2025-02-13	2024-12-31	292,214	2.3%
David A. Witkin	SCHEDULE 13G/A	2025-02-13	2024-12-31	336,628	2.7%
David Rosen	SCHEDULE 13G/A	2025-02-13	2024-12-31	573,408	4.51%
Rubric Capital Management LP	SCHEDULE 13G/A	2025-02-13	2024-12-31	573,408	4.51%
BlackRock, Inc.	SCHEDULE 13G/A	2025-02-03	2024-12-31	326,296	2.6%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.