$SEG

$22.87 +$0.27 (1.19%) Close

$SEG Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 12.8M shares outstanding

Who owns SEG?

By type of holder

Institutions 86.9% Insiders 3.1% Everyone else 10.0%

Concentration Top 10 holders own 73.7%

Pershing Square Inc. 39.2% · Kahn Brothers Group Inc 7.2%

Institutional ownership

86.9%

+3.2 pts vs last qtr

Institutional holders

116

-2 vs last qtr

Net shares bought

+409.3K

by institutions in Q2 2026

New / sold out

14 / 16

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Pershing Square Inc. NEW +5.0M
Vanguard Portfolio Management LLC +341.1K

Biggest sellers in Q2 2026

Pershing Square Capital Management, L.P. SOLD OUT −5.0M
Dimensional Fund Advisors LP −58.6K

Who is planning to sell?

Notices of proposed sale, last 12 months

$282K

1 notice from 1 person

Shares covered

12.5K

0.10% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Fato Luciana Former officer $282K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2022–FY2025

+130.3%

+32.06% a year

Each share's claim on the business

−56.6%

shrank without buying or selling a share

Diluted shares, split-adjusted

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years30% Under 1 year70%

Quarterly turnover

51.4%

of institutional shares changed hands

Top 10 managers, median time held

1.8 years

Super Investors

Investment managers reporting SEG on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
PS Pershing Square Capital Management, L.P.	—	—	SOLD OUT	—	0.0%
Shares held by quarter Peak holding5.0M (Q4'24) Change over 8 quarters−2.1M Pershing Square Capital Management, L.P.'s full portfolio →
PS Pershing Square Inc.	5.0M	39.22%	NEW	Q2 '26	0.7%
Shares held by quarter Peak holding5.0M (Q2'26) Change over 8 quarters+5.0M Share of the company39.220% Pershing Square Inc.'s full portfolio →

Pershing Square Capital Management, L.P.

—

% of company

—

Change vs last qtr

SOLD OUT

Held since

—

Pershing Square Inc.

5.0M

% of company

39.22%

Change vs last qtr

NEW

Held since

Q2 '26

28 more super investors behind a free account

See every manager holding Seaport Entertainment Group Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting SEG on Form N-PORT; together they hold 14.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VR Vanguard Real Estate Index Fund Vanguard Specialized Funds	$7.33M	279.6K	2.18%	0.01%	July 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$6.68M	251.3K	1.96%	0.00%	June 30, 2026

Vanguard Real Estate Index Fund

Vanguard Specialized Funds

Position value

$7.33M

% of company

2.18%

% of the fund

0.01%

As of

July 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$6.68M

% of company

1.96%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Seaport Entertainment Group Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
NA Nikodemus Anton D. Insider	191.9K	1.50%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.500% Nikodemus Anton D.'s insider activity →
PM Partridge Matthew Morris Insider	109.3K	0.85%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.850% Partridge Matthew Morris's insider activity →

Nikodemus Anton D.

Insider

191.9K

% of company

1.50%

Change vs last qtr

—

Held since

—

Partridge Matthew Morris

Insider

109.3K

% of company

0.85%

Change vs last qtr

—

Held since

—

6 more holders behind a free account

See every insider and 5%+ holder of Seaport Entertainment Group Inc.

Comments