KOOP BRYAN J 4

4 · BOSTON PROPERTIES LTD PARTNERSHIP · Filed Feb 2, 2026

AI-generated summary of this filing

Updated Feb 2, 2026

Boston Properties EVP Bryan J. Koop Receives 13,143 LTIP Units

What happened

Bryan J. Koop, Executive Vice President of the general partner of Boston Properties Ltd. Partnership, was granted 13,143 LTIP units on January 30, 2026. The award is reported as an acquisition (derivative) at $0.25 per unit, a nominal reported value of $3,286.
These are LTIP Units (long-term incentive plan units) — a derivative equity award rather than an open-market purchase or sale.

Key details

Transaction date: 2026-01-30; Filing date: 2026-02-02 (filed within the typical 2-business-day Form 4 window).
Price/value: $0.25 per LTIP Unit; total reported value $3,286.
Shares/units after transaction: total holdings after this grant not specified in the provided filing.
Footnotes: F1 — LTIP Units are limited partnership units that can convert to Common OP Units and may be redeemable for cash equal to the fair market value of a BXP share (or, at BXP’s election, exchanged for one share of BXP common stock). LTIP Units have no expiration. F2 — The 13,143 LTIP Units vest in four equal annual installments beginning January 15, 2027.

Context

This was a compensation grant (award) of derivative units, a routine form of executive long-term incentive. LTIP Units are not immediate stock purchases; value realization depends on conversion/redemption terms and vesting. Grants like this are common and do not on their own indicate the insider’s market view.

Form 4

Period: 2026-01-30

Executive Vice President of GP

Transactions

Award
LTIP Units
[F1][F2]
2026-01-30$0.25/sh+13,143$3,286→ 221,791 total
→ Common OP Units (13,143 underlying)

Footnotes (2)

[F1]Represents units of limited partnership in the Issuer issued pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). 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 unit of limited partnership interest in the Issuer ("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 redemption for one share of BXP's common stock. LTIP Units have no expiration date.
[F2]The 13,143 LTIP Units vest in four equal annual installments beginning on January 15, 2027.

Signature

/s/ Kelli A. DiLuglio, as Attorney-in-Fact|2026-02-02

1 file