Michael E. Labelle - 22 Dec 2025 Form 4 Insider Report for BOSTON PROPERTIES LTD PARTNERSHIP

Role: EVP and CFO of GP
Issuer symbol: N/A
Report date: 22 Dec 2025
Net transaction value: +$18,008
Form type: 4
Accepted by SEC: 22 Dec 2025, 17:21:03 UTC
Previous filing: 10 Nov 2025
Next filing: 27 Jan 2026
SEC filing: View on sec.gov
Reporting owner signature: /s/ Kelli A. DiLuglio, as Attorney-in-Fact

Key filing fact

Michael E. Labelle filed Form 4 for BOSTON PROPERTIES LTD PARTNERSHIP on 22 Dec 2025.

Key facts

This page summarizes Michael E. Labelle's Form 4 filing for BOSTON PROPERTIES LTD PARTNERSHIP.
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 22 Dec 2025, 17:21.

Change

Previous filing in this sequence was filed on 10 Nov 2025.
Current net transaction value: +$18,008.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

See Original Filing

Reporting Owners (1)

CIK 0001419045 Primary reporting owner

LABELLE MICHAEL E

Relationship: EVP and CFO of GP
Address: C/O BXP, 800 BOYLSTON STREET, BOSTON
Signature: /s/ Kelli A. DiLuglio, as Attorney-in-Fact
Signature date: 22 Dec 2025

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

No ticker transaction Derivative

LTIP Units

Award

Transaction value: $18,008
Shares: +72,034
Change %: +31%
Price: $0.2500
Shares after: 300,789
Date: 22 Dec 2025
Ownership: Direct
Underlying class: Common OP Units
Underlying amount: 72,034
Exercise price
Footnotes: F1, F2, F3

^* indicates a reported price that failed the local validity check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents units of limited partnership interest in the Issuer, granted pursuant to BXP, Inc.'s ("BXP") 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the 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 unit of limited partnership interest in the Issuer ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. 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 common stock of BXP, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of common stock of BXP. LTIP Units have no expiration date.

Footnote F2

The LTIP Units granted pursuant to the 2025 OPP may be earned based on the appreciation of BXP's common stock price during the four-year performance period ending December 22, 2029. The number of LTIP Units earned, if any, will be determined based on the highest level of achievement of eight performance tiers ranging from $90.00 to $118.00, with 12.5% of the LTIP Units earned at $90.00 and 100% of the LTIP Units earned at $118.00. Linear interpolation does not apply for performance between tiers; however, each $4.00 increase in performance will increase the percentage of the maximum award earned by 12.5%. A performance tier will be achieved if the dividend-adjusted closing price of BXP's common stock equals or exceeds the applicable performance tier over any period of twenty (20) consecutive trading days during the performance period.

Footnote F3

The LTIP Units are also subject to time-based vesting conditions, with one-third vesting on the second anniversary of the grant date and the remaining two-thirds vesting ratably over the third and fourth years, subject to continued service and the achievement of the performance-based vesting conditions described above.