Alexandria exec has 1,462 shares withheld for tax

ARE’s Co-Regional Market Director had shares withheld to cover taxes on restricted stock vesting, leaving him with over fifty-one thousand shares held directly.

Rhea-AI Filing Summary

ALEXANDRIA REAL ESTATE EQUITIES, INC. (ARE) reported that Co-Regional Market Director Michael E. Boss had 1,462 shares of common stock withheld on September 15, 2026 to satisfy a tax obligation arising from the vesting of restricted stock. The shares were withheld by the issuer, and Boss now holds 51,345 shares of common stock directly. No Rule 10b5-1 trading plan is reported for this transaction.

Insider Trade Summary

Tax Withholding: 1,462 shares

Tax Withholding 1 txn

Insider Boss Michael E.

Role Co-Regional Market Director

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	1,462	$52.93	$77K

Holdings After Transaction: Common Stock — 51,345 shares (Direct)

Footnotes (1)

1. F1. Represents shares withheld by the issuer to satisfy a tax obligation realized by the reporting person upon the vesting of restricted stock.

Key Figures

Shares withheld for taxes: 1,462 shares Reference value per share: $52.93 per share Shares held after transaction: 51,345 shares +2 more

5 metrics

Shares withheld for taxes 1,462 shares Common stock withheld September 15, 2026 to satisfy tax obligation on restricted stock vesting

Reference value per share $52.93 per share Value used for the 1,462-share tax-withholding transaction on September 15, 2026

Shares held after transaction 51,345 shares Directly held ARE common stock by Michael E. Boss following the September 15, 2026 transaction

Exercise price or tax-liability shares 1,462 shares Shares reported in exercise-price-or-tax-liability category for this Form 4

Number of disposition transactions 1 transaction Single tax-withholding disposition reported on this Form 4

Key Terms

restricted stock, withheld by the issuer, tax obligation

3 terms

restricted stock financial

"tax obligation realized by the reporting person upon the vesting of restricted stock"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

withheld by the issuer financial

"Represents shares withheld by the issuer to satisfy a tax obligation"

tax obligation financial

"to satisfy a tax obligation realized by the reporting person"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did ARE report for Michael E. Boss?

ARE reported that Co-Regional Market Director Michael E. Boss had 1,462 shares of common stock withheld on September 15, 2026 to satisfy a tax obligation from the vesting of restricted stock; this was recorded as a disposition, not an open-market sale.

How many ARE shares were involved in the tax withholding for Michael E. Boss?

The filing shows that 1,462 shares of ARE common stock were withheld by the issuer at a reference value of $52.93 per share to satisfy a tax obligation related to vested restricted stock.

How many ARE shares does Michael E. Boss hold after this transaction?

After the September 15, 2026 tax-withholding transaction, Michael E. Boss holds 51,345 shares of ARE common stock directly, according to the reported post-transaction share balance.

Was the ARE insider transaction by Michael E. Boss under a Rule 10b5-1 plan?

No. The filing indicates no Rule 10b5-1 trading plan applies to this transaction, and the tax-withholding disposition is instead tied to the vesting of restricted stock.

What transaction code was used for Michael E. Boss’s ARE stock event and what does it mean?

The event is coded “F”, indicating payment of a tax liability by delivering or withholding securities. Footnote F1 explains the shares were withheld by ARE to satisfy a tax obligation upon vesting of restricted stock.

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

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Available on EDGAR 09/17/2026 - 04:33 PM Accepted by SEC EDGAR 09/17/2026 - 04:33 PM Learn about SEC filing dates

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^*

Boss Michael E.

(Last) (First) (Middle)

C/O ALEXANDRIA REAL ESTATE EQUITIES, INC

26 NORTH EUCLID AVENUE

(Street)

PASADENA CALIFORNIA 91101

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ALEXANDRIA REAL ESTATE EQUITIES, INC. [ ARE ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Co-Regional Market Director

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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
Common Stock	09/15/2026		F		1,462(1)	D	$52.93	51,345	D

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

Explanation of Responses:

1. Represents shares withheld by the issuer to satisfy a tax obligation realized by the reporting person upon the vesting of restricted stock.

Remarks:

	/s/ Bill Boyle, Attorney-in-Fact	09/15/2026
	** 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)