Hilary J. Spann - 25 Feb 2026 Form 4 Insider Report for BOSTON PROPERTIES LTD PARTNERSHIP

Role: Executive Vice President of GP
Signature: /s/ Kelli A. DiLuglio, as Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 25 Feb 2026
Net transactions value: -$1,374
Form type: 4
Filing time: 26 Feb 2026, 15:59:19 UTC
Previous filing: 06 Feb 2026
Next filing: 02 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Spann Hilary J.	Executive Vice President of GP	C/O BXP, 599 LEXINGTON AVENUE, NEW YORK	/s/ Kelli A. DiLuglio, as Attorney-in-Fact	26 Feb 2026	0001900835

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction		Common OP Units	Conversion of derivative security		+5,495			5,495	25 Feb 2026	Direct	F1, F2
transaction		Common OP Units	Conversion of derivative security		-5,495	-100%		0	25 Feb 2026	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction		LTIP Units	Conversion of derivative security	$1,374	-5,495	-12%	$0.2500	39,923	25 Feb 2026	Common OP Units	5,495		Direct	F2, F3

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

Explanation of Responses:

Id	Content
F1	Represents common units of limited partnership interest ("Common OP Units") in the Issuer. Each Common OP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP, Inc. ("BXP"), the Issuer's sole general partner, except that BXP may at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock.
F2	5,495 of the reporting person's units of limited partnership interest ("LTIP Units") in the Issuer were converted into Common OP Units in the Issuer by the reporting person and the Common OP Units were redeemed for an equal number of shares of BXP's common stock, in accordance with the terms of the Issuer's Partnership Agreement.
F3	Represents LTIP Units in the Issuer issued pursuant to BXP's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.