ALX · Insider Trading

Alexander's Inc.

Every open-market purchase and sale reported by ALX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
1
code S
Reporting Insiders
5
current holders
ALX — Recent Form 4 Transactions (latest 2026-06-10)
FiledInsiderRole TypeSharesValue
2026-06-10 Russell B Wight Jr Director Sell −423 −$112.94K
2026-05-22 Russell B Wight Jr Director A +505 deriv. —
2026-05-22 David Mandelbaum Director A +505 deriv. —
2026-05-22 Thomas R Dibenedetto Director A +505 deriv. —
2026-05-22 Steven Roth CHAIRMAN AND CEO A +505 deriv. —
2026-05-22 Wendy Silverstein Director A +505 deriv. —
2026-05-22 Arthur Sonnenblick Director A +505 deriv. —
2026-05-22 Mandakini Puri Director A +505 deriv. —
2025-05-23 Russell B Wight Jr Director A +346 deriv. —
2025-05-23 David Mandelbaum Director A +346 deriv. —
2025-05-23 Arthur Sonnenblick Director A +346 deriv. —
2025-05-23 Mandakini Puri Director A +346 deriv. —
2025-05-23 Wendy Silverstein Director A +346 deriv. —
2025-05-23 Thomas R Dibenedetto Director A +346 deriv. —
2025-05-23 Steven Roth CHAIRMAN AND CEO A +346 deriv. —
2024-05-24 Wendy Silverstein Director A +357 deriv. —
2024-05-24 Richard R West Director A +357 deriv. —
2024-05-24 David Mandelbaum Director A +357 deriv. —
2024-05-24 Russell B Wight Jr Director A +357 deriv. —
2024-05-24 Steven Roth CHAIRMAN AND CEO A +357 deriv. —
2024-05-24 Mandakini Puri Director A +357 deriv. —
2024-05-24 Thomas R Dibenedetto Director A +357 deriv. —
2024-05-24 Arthur Sonnenblick Director A +357 deriv. —
2023-08-23 Properties Interstate 10%+ Owner J −251,522 —
2023-05-19 Richard R West Director A +449 deriv. —
2023-05-19 David Mandelbaum Director A +449 deriv. —
2023-05-19 Russell B Wight Jr Director A +449 deriv. —
2023-05-19 Steven Roth CHAIRMAN AND CEO A +449 deriv. —
2023-05-19 Arthur Sonnenblick Director A +449 deriv. —
2023-05-19 Thomas R Dibenedetto Director A +449 deriv. —
2023-05-19 Mandakini Puri Director A +449 deriv. —
2023-05-19 Wendy Silverstein Director A +449 deriv. —
2022-05-20 Thomas R Dibenedetto Director A +326 deriv. —
2022-05-20 Wendy Silverstein Director A +326 deriv. —
2022-05-20 Mandakini Puri Director A +326 deriv. —
2022-05-20 Arthur Sonnenblick Director A +326 deriv. —
2022-05-20 Russell B Wight Jr Director A +326 deriv. —
2022-05-20 Steven Roth CHAIRMAN AND CEO A +326 deriv. —
2022-05-20 Richard R West Director A +326 deriv. —
2022-05-20 David Mandelbaum Director A +326 deriv. —
2021-05-24 Russell B Wight Jr Director A +284 deriv. —
2021-05-24 Mandakini Puri Director A +284 deriv. —
2021-05-24 Thomas R Dibenedetto Director A +284 deriv. —
2021-05-24 Steven Roth Chairman and CEO A +284 deriv. —
2021-05-24 Arthur Sonnenblick Director A +284 deriv. —
2021-05-24 Wendy Silverstein . A +284 deriv. —
2021-05-24 David Mandelbaum Director A +284 deriv. —
2021-05-24 Richard R West Director A +284 deriv. —
2020-05-18 Thomas R Dibenedetto Director A +329 deriv. —
2020-05-18 Wendy Silverstein . A +329 deriv. —
ALX — Current Insider Holders
InsiderRole Shares HeldValue
David Mandelbaum Director 1,362,305 $318.32M
Russell B Wight Jr Director 210,900 $49.28M
Steven Roth CHAIRMAN AND CEO 163,176 $38.13M
Thomas R Dibenedetto Director 10,400 $2.43M
Arthur Sonnenblick Director 69 $16.12K
ALX Insider Trading FAQ
Who are the insiders at ALX?
5 officers, directors and 10%+ beneficial owners currently report holdings in ALX via SEC Form 4.
Are ALX insiders buying or selling?
Across the 50 most recent Form 4 filings for ALX, 0 were open-market purchases (code P) and 1 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is ALX insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent ALX filing is dated 2026-06-10.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the ALX quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.