# EDGAR Filing Document

**Accession Number:** 0001217098
**File Stem:** 0001246991-23-000100
**Filing Date:** 2023-2
**Character Count:** 7086
**Document Hash:** af5046631658afcd526dff6d4b90e421
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001246991-23-000100.hdr.sgml**: 20230209

**ACCESSION NUMBER**: 0001246991-23-000100

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230207

**FILED AS OF DATE**: 20230209

**DATE AS OF CHANGE**: 20230209

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** KOOP BRYAN J
- **CENTRAL INDEX KEY:** 0001217098

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-50209
- **FILM NUMBER:** 23605693

**MAIL ADDRESS:**
- **STREET 1:** BOSTON PROPERTIES, INC.
- **STREET 2:** 800 BOYLSTON STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BOSTON PROPERTIES LTD PARTNERSHIP
- **CENTRAL INDEX KEY:** 0001043121
- **STANDARD INDUSTRIAL CLASSIFICATION:** REAL ESTATE INVESTMENT TRUSTS [6798]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 800 BOYLSTON STREET
- **STREET 2:** SUITE 1900
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 6172363300

**MAIL ADDRESS:**
- **STREET 1:** 800 BOYLSTON STREET
- **STREET 2:** SUITE 1900
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>KOOP BRYAN J<br><sub>(Last) (First) (Middle)</sub><br>C/O BOSTON PROPERTIES, INC.<br>800 BOYLSTON STREET<br><sub>(Street)</sub><br>BOSTON, MA 02199<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-02-07 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Executive Vice President of GP_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>BOSTON PROPERTIES LTD PARTNERSHIP [ N/A ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| LTIP Units<sup>(1)</sup> | <sup>(1)</sup> | 2023-02-07 |  | A |  | 9081 |  | <sup>(1)(2)</sup> | <sup>(1)</sup> | Common OP Units | 9081.0 | $0.25 | 114963 | D |  |

---

### Footnotes:

(1) Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). 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 redeemed, 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 redemption for one share of common stock of BXP. LTIP Units have no expiration date.

(2) The 9,081 LTIP Units may be earned based on the achievement of certain performance criteria based on BXP's total shareholder return over a three-year performance period ending on February 6, 2026. Any LTIP Units earned pursuant to the 2023 Program will vest in full on February 6, 2026, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

**Signature:** /s/ Kelli A. DiLuglio, as Attorney-in-Fact  
**Date:** 2023-02-09

### Remarks:

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.**