Alexanders director granted 505 deferred stock units

MANDELBAUM DAVID reported acquisition or exercise transactions in this Form 4 filing.

Accepted by SEC EDGAR 05/22/2026 - 04:30 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

MANDELBAUM DAVID reported acquisition or exercise transactions in this Form 4 filing.

Alexander's Inc director and ten percent owner David Mandelbaum received a grant of 505 Deferred Stock Units on May 21, 2026. These units are a form of stock-based compensation, awarded at a price of $0.00 per unit and tied to the company’s common stock.

Each Deferred Stock Unit entitles him to one share of Alexander's Inc common stock without paying any consideration. The units vest immediately, but the underlying common shares will only be delivered after he is no longer serving on the company’s Board of Directors. Following this grant, he holds 505 Deferred Stock Units directly.

Insider Trade Summary

Grant/Award: 505 shares

Grant/Award 1 txn

Insider MANDELBAUM DAVID

Role Director, 10% Owner

Type	Security	Shares	Price	Value
Grant/Award	Deferred Stock Units	505	$0.00	$0.00

Holdings After Transaction: Deferred Stock Units — 505 contracts (Direct)

Holdings Before and After: Deferred Stock Units, 0 to 505 contracts (Direct)

Footnotes (2)

1. F1. On May 21, 2026, the reporting person received a grant of Deferred Stock Units of Alexander's, Inc. (the "Company"). The Deferred Stock Units entitle the reporting person to an equivalent number of shares of Common Stock of the Company without the payment of any consideration.
2. F2. These Deferred Stock Units vest immediately but the Common Stock underlying the Deferred Stock Units is not deliverable until the reporting person is no longer serving as a member of the Company's Board of Directors.

Key Figures

Deferred Stock Units granted: 505 units Grant price per unit: $0.00 per unit Underlying common shares: 505 shares +1 more

4 metrics

Deferred Stock Units granted 505 units Grant to David Mandelbaum on May 21, 2026

Grant price per unit $0.00 per unit Deferred Stock Units compensation award

Underlying common shares 505 shares Each unit equals one share of common stock

Units held after transaction 505 units Total Deferred Stock Units directly held after grant

Key Terms

Deferred Stock Units, Common Stock, vest immediately, Board of Directors

4 terms

Deferred Stock Units financial

"the reporting person received a grant of Deferred Stock Units of Alexander's, Inc."

Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.

Common Stock financial

"entitle the reporting person to an equivalent number of shares of Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

vest immediately financial

"These Deferred Stock Units vest immediately but the Common Stock underlying"

Board of Directors financial

"not deliverable until the reporting person is no longer serving as a member of the Company's Board of Directors"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

MANDELBAUM DAVID

(Last) (First) (Middle)

C/O VORNADO REALTY TRUST

888 SEVENTH AVENUE

(Street)

NEW YORK NEW YORK 10019

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ALEXANDERS INC [ ALX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Deferred Stock Units(1)	(1)	05/21/2026		A		505		(2)	(2)	Common Stock	505	(1)	505	D

Explanation of Responses:

1. On May 21, 2026, the reporting person received a grant of Deferred Stock Units of Alexander's, Inc. (the "Company"). The Deferred Stock Units entitle the reporting person to an equivalent number of shares of Common Stock of the Company without the payment of any consideration.

2. These Deferred Stock Units vest immediately but the Common Stock underlying the Deferred Stock Units is not deliverable until the reporting person is no longer serving as a member of the Company's Board of Directors.

	/s/ Ryan Saum, Attorney-in-Fact	05/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)