Insider Transactions Reported by 10 Insiders of ALEXANDERS INC

Symbol: ALX on NYSE
Location: Paramus, NJ

Quick Takeaways

ALX - ALEXANDERS INC has 10 insiders with reported activity on this page.
No net insider buy/sell flow is currently reported for the last year.
Recent transaction rows are available for direct filing-level review.

What Changed

No meaningful buy/sell imbalance is currently visible in the one-year window.
Activity will update as new Forms 3/4/5 are filed.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Official SEC Source

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 08 Apr 2025.

Buys

Shares: 0

Insiders: 0

Sells

Shares: 0

Insiders: 0

Net

Shares: 0

Insiders: 0

Window (months)	Buy $	Sell $	Net $
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

ALEXANDERS INC executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Valuation	Report Date
Properties Interstate	10%+ Owner	$153,177,507	Mixed	23 Aug 2023
David Mandelbaum	Director, 10%+ Owner	$108,707	Mixed	22 May 2025
Russell B. Wight Jr.	Director, 10%+ Owner	$108,707	Mixed	22 May 2025
Arthur Sonnenblick	Director	$108,707	Mixed	22 May 2025
Mandakini Puri	Director	$108,707	Mixed	22 May 2025
Richard R. West	Director	$108,707	Mixed	23 May 2024
Thomas R. Dibenedetto	Director	$108,707	Mixed	22 May 2025
Steven Roth	CHAIRMAN AND CEO, Director, 10%+ Owner	$108,707	Mixed	22 May 2025
Wendy Silverstein	Director	$108,707	Mixed	22 May 2025
Gary W. Hansen	Chief Financial Officer		Mixed	02 Nov 2021

Top shareholders of ALEXANDERS INC (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Properties Interstate	3/4/5	10%+ Owner	— class O/S missing	503,046	$153,177,507	—	23 Aug 2023	3/4/5
BlackRock, Inc.	13F	Company	4.3%	215,958	$47,065,926	—	31 Dec 2025	13F
VANGUARD GROUP INC	13D/G 13F	The Vanguard Group · Company	3.9%	199,629	$43,509,480	$0	31 Dec 2025	13D/G 13F
MORGAN STANLEY	13F	Company	3.4%	169,491	$36,938,982	—	31 Dec 2025	13F
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	13F	Company	3.1%	155,918	$33,980,769	—	31 Dec 2025	13F
GOLDMAN SACHS GROUP INC	13D/G 13F	THE GOLDMAN SACHS GROUP, INC. · Company	2.9%	146,473	$32,641,466	$0	31 Dec 2025	13D/G 13F
SOUTHEASTERN ASSET MANAGEMENT INC/TN/	13F	Company	2.4%	122,712	$26,743,853	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.1%	57,402	$12,512,377	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	1%	52,771	$11,500,912	—	31 Dec 2025	13F
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	13F	Company	0.86%	43,600	$9,502,184	—	31 Dec 2025	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.8%	40,218	$8,765,111	—	31 Dec 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.67%	33,720	$7,349,089	—	31 Dec 2025	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.65%	32,726	$7,132,304	—	31 Dec 2025	13F
UBS Group AG	13F	Company	0.61%	30,784	$6,709,065	—	31 Dec 2025	13F
DENALI ADVISORS LLC	13F	Company	0.59%	29,900	$6,516,406	—	31 Dec 2025	13F
NORGES BANK	13F	Company	0.56%	28,500	$6,211,290	—	31 Dec 2025	13F
JPMORGAN CHASE & CO	13F	Company	0.56%	28,090	$6,121,941	—	31 Dec 2025	13F
Bulldog Investors, LLP	13F	Company	0.55%	28,000	$6,102,320	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.51%	25,950	$5,655,543	—	31 Dec 2025	13F
JACOBS LEVY EQUITY MANAGEMENT, INC	13F	Company	0.5%	25,156	$5,482,499	—	31 Dec 2025	13F
Beverly Hills Private Wealth, LLC	13F	Company	0.42%	21,238	$4,628,567	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	0.4%	20,291	$4,422,220	—	31 Dec 2025	13F
BNP PARIBAS FINANCIAL MARKETS	13F	Company	0.35%	17,698	$3,857,102	—	31 Dec 2025	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	0.31%	15,687	$3,418,816	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	0.31%	15,620	$3,404,229	—	31 Dec 2025	13F
Voss Capital, LP	13F	Company	0.3%	15,000	$3,269,100	—	31 Dec 2025	13F
BESSEMER GROUP INC	13F	Company	0.28%	14,349	$3,127,000	—	31 Dec 2025	13F
Marnell Management LLC	13F	Company	0.24%	12,040	$2,623,998	—	31 Dec 2025	13F
SG Americas Securities, LLC	13F	Company	0.22%	10,952	$2,387,000	—	31 Dec 2025	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.19%	9,818	$2,139,735	—	31 Dec 2025	13F
Susquehanna Portfolio Strategies, LLC	13F	Company	0.16%	7,948	$1,732,187	—	31 Dec 2025	13F
ExodusPoint Capital Management, LP	13F	Company	0.12%	6,103	$1,330,088	—	31 Dec 2025	13F
Nuveen, LLC	13F	Company	0.11%	5,728	$1,248,361	—	31 Dec 2025	13F
Penserra Capital Management LLC	13F	Company	0.11%	5,503	$1,199,000	—	31 Dec 2025	13F
Quadrature Capital Ltd	13F	Company	0.1%	5,207	$1,134,814	—	31 Dec 2025	13F
Invesco Ltd.	13F	Company	0.1%	4,920	$1,072,265	—	31 Dec 2025	13F
May Hill Capital, LLC	13F	Company	0.1%	4,890	$1,065,726	—	31 Dec 2025	13F
Mariner, LLC	13F	Company	0.09%	4,660	$1,015,294	—	31 Dec 2025	13F
JANUS HENDERSON GROUP PLC	13F	Company	0.09%	4,634	$1,009,387	—	31 Dec 2025	13F
FIRST TRUST ADVISORS LP	13F	Company	0.09%	4,601	$1,002,741	—	31 Dec 2025	13F
Swiss National Bank	13F	Company	0.09%	4,500	$980,730	—	31 Dec 2025	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	0.08%	4,158	$907,000	—	31 Dec 2025	13F
CAXTON ASSOCIATES LLP	13F	Company	0.08%	4,030	$878,298	—	31 Dec 2025	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.07%	3,746	$816,403	—	31 Dec 2025	13F
BARCLAYS PLC	13F	Company	0.07%	3,354	$730,971	—	31 Dec 2025	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.06%	3,223	$702,421	—	31 Dec 2025	13F
NOMURA ASSET MANAGEMENT CO LTD	13F	Company	0.06%	3,195	$696,318	—	31 Dec 2025	13F
Asset Management One Co., Ltd.	13F	Company	0.06%	3,094	$679,721	—	31 Dec 2025	13F
RHUMBLINE ADVISERS	13F	Company	0.06%	3,052	$665,143	—	31 Dec 2025	13F
Squarepoint Ops LLC	13F	Company	0.06%	3,006	$655,128	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for ALEXANDERS INC

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	Shares	Shares Owned	Date	Ownership
Mandakini Puri	ALX	Deferred Stock Units	Award	346	346	22 May 2025	Direct
Arthur Sonnenblick	ALX	Deferred Stock Units	Award	346	346	22 May 2025	Direct
Russell B. Wight Jr.	ALX	Deferred Stock Units	Award	346	346	22 May 2025	Direct
Thomas R. Dibenedetto	ALX	Deferred Stock Units	Award	346	346	22 May 2025	Direct
David Mandelbaum	ALX	Deferred Stock Units	Award	346	346	22 May 2025	Direct
Steven Roth	ALX	Deferred Stock Units	Award	346	346	22 May 2025	Direct
Wendy Silverstein	ALX	Deferred Stock Units	Award	346	346	22 May 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.