Seaport Entertainment SEG Insider Ownership

NYSE SEG

$20.57 -0.17 (-0.82%)

At close: Nov 9, 2026 · 4:00 PM EST

Insider Holdings by Owner

500.96K Shares

Anton D. Nikodemus200.81K40.1%

Matthew Morris Partridge109.27K21.8%

Square Capital Management, L.P. Pershing90.88K18.1%

Lenah Elaiwat30.71K6.1%

Rebecca E. Sachs22.39K4.5%

Other insiders (5)46.90K9.4%

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

3.91%

▼-0.040% pp QoQ

Shares Held by Insiders

500.96K

filed for Sep 2026

▼-1.02% QoQ

Shares Outstanding

12.81Mn

12,805,000 shares

Direct Holdings

410.09K

Indirect: 90.88K

Net Open-Market Trades

no open-market trades in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Open-Market Insider Trades

Bought Sold

Latest quarter —

Net over range —

Net-buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Across the past 12 months, Seaport Entertainment insiders reported no open-market purchases or sales.

Apart from open-market trades, SEG insiders received 66.96K shares in stock awards and gave up 19.06K shares to cover taxes or exercise prices in the past 12 months.
Business Quant data puts insider holdings in SEG at 500.96K shares across insiders' latest Form 4 filings, down 1.02% from 506.1K shares at the end of Q2 2026.
Seaport Entertainment insiders hold 410.09K shares directly (81.86% of their total) and 90.88K shares (18.14%) indirectly, through entities such as trusts and partnerships.
Per Business Quant, 10 insiders of SEG hold shares, counting officers, directors and 10% owners who have filed a Form 4 in the past two years.
Seaport Entertainment's top three insider holders by shares held are Anton D. Nikodemus (Chief Executive Officer, 200.81K shares), Matthew Morris Partridge (Chief Executive Officer, 109.27K shares) and Pershing Square Capital Management, L.P. (Director and 10% owner, 90.88K shares).
Of the shares held by SEG insiders, 40.09% belong to Anton D. Nikodemus.
Institutional holders reported 86.75% of Seaport Entertainment's outstanding shares for Q2 2026; insiders' latest Form 4 filings put their stake at about 3.91%, and other investors, including the public, hold the remaining 9.34%.
A total of 26 Form 4 filings with transactions in Seaport Entertainment stock were made over the past 12 months, by 8 insiders.
The insider data for SEG reflects Form 4 filings through September 22, 2026.

Form 4 Holdings

Insiders Holding SEG

Insiders 10

Shares held 500.96K

Of outstanding 3.91%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Anton D. Nikodemus	Chief Executive Officer	200,814	0	200,814	40.1%	16 Sep, 2024
2	Matthew Morris Partridge	Chief Executive Officer	109,267	0	109,267	21.8%	22 Sep, 2026
3	Square Capital Management, L.P. Pershing	Director, TenPercentOwner	0	90,875	90,875	18.1%	23 Apr, 2026
4	Lenah Elaiwat	Chief Financial Officer	30,713	0	30,713	6.1%	03 Aug, 2026
5	Rebecca E. Sachs	Chief Administrative Officer	22,390	0	22,390	4.5%	03 Aug, 2026
6	Luciana Fato	General Counsel	19,212	0	19,212	3.8%	09 Mar, 2026
7	David Z. Hirsh	Director	9,219	0	9,219	1.8%	16 Sep, 2026
8	Michael Anthony Crawford	Director	9,219	0	9,219	1.8%	16 Sep, 2026
9	Monica S Digilio	Director	9,219	0	9,219	1.8%	16 Sep, 2026
10	Anthony F Massaro	Director	33	0	33	0.0%	22 Oct, 2024

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

67 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
18 Sep, 2026	Matthew Morris Partridge	Chief Executive Officer	Disposed F	1,804	$24.14	$43.55K	109,267	Direct
15 Sep, 2026	Michael Anthony Crawford	Director	Acquired A	987	$0.00	$0	9,219	Direct
15 Sep, 2026	Monica S Digilio	Director	Acquired A	987	$0.00	$0	9,219	Direct
15 Sep, 2026	David Z. Hirsh	Director	Acquired A	987	$0.00	$0	9,219	Direct
31 Jul, 2026	Rebecca E. Sachs	Chief Administrative Officer	Disposed F	1,010	$26.23	$26.49K	22,390	Direct
31 Jul, 2026	Lenah Elaiwat	Chief Financial Officer	Disposed F	741	$26.23	$19.44K	30,713	Direct
31 Jul, 2026	Matthew Morris Partridge	Chief Executive Officer	Disposed F	4,544	$26.23	$119.19K	111,071	Direct
15 Jun, 2026	David Z. Hirsh	Director	Acquired A	1,014	$0.00	$0	8,232	Direct
15 Jun, 2026	Monica S Digilio	Director	Acquired A	1,014	$0.00	$0	8,232	Direct
15 Jun, 2026	Michael Anthony Crawford	Director	Acquired A	1,014	$0.00	$0	8,232	Direct
21 Apr, 2026	Square Capital Management, L.P. Pershing	Director, TenPercentOwner	Disposed J	90,875	$22.25	$2.02Mn	4,932,905	Indirect
21 Apr, 2026	Square Capital Management, L.P. Pershing	Director, TenPercentOwner	Acquired J	90,875	$22.25	$2.02Mn	90,875	Indirect
01 Apr, 2026	Matthew Morris Partridge	Chief Executive Officer	Disposed F	4,918	$21.46	$105.54K	115,615	Direct
16 Mar, 2026	Michael Anthony Crawford	Director	Acquired A	1,175	$0.00	$0	7,218	Direct
16 Mar, 2026	David Z. Hirsh	Director	Acquired A	1,175	$0.00	$0	7,218	Direct
16 Mar, 2026	Monica S Digilio	Director	Acquired A	1,175	$0.00	$0	7,218	Direct
06 Mar, 2026	Matthew Morris Partridge	Chief Executive Officer	Disposed F	2,726	$21.64	$58.99K	120,533	Direct
06 Mar, 2026	Rebecca E. Sachs	Chief People Officer	Disposed F	684	$21.64	$14.80K	23,400	Direct
06 Mar, 2026	Luciana Fato	General Counsel	Disposed F	728	$21.64	$15.75K	19,212	Direct
26 Feb, 2026	Luciana Fato	General Counsel	Acquired A	8,127	$0.00	$0	19,940	Direct

Showing 1 to 20 of 67 transactions