SEC ownership of BOSTON PROPERTIES LTD PARTNERSHIP

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001043121.

Comparable stake leader

Owen D. Thomas

Disclosed value leader

Owen D. Thomas

Comparable rows

0/23

Latest evidence

04 Jun 2026

Top shareholders Insider holders Latest transactions
Parsed ownership sources
3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
Owen D. Thomas
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 1 signal
Latest parsed ownership date
04 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001043121
Issuer location
Boston, MA

Ownership snapshot

Top shareholders of BOSTON PROPERTIES LTD PARTNERSHIP (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Owen D. Thomas
Disclosed value leader
Owen D. Thomas
Comparable rows
0/23
Latest evidence
04 Jun 2026
3/4/5 Highest disclosed value: $276,880 23 rows are not safely comparable across share classes. Showing 1-8 of 23 holder rows.

Quick read

Owen D. Thomas has the largest disclosed position value at $276.9K.

0 of 23 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Owen D. Thomas's linked filing trail.
Disclosed position value Top 5
Owen D. Thomas $276.9K
Linde Douglas T. $201.8K
Michael E. Labelle $81.1K
Bryan J. Koop $55.5K
John J. Stroman $26.3K

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-8 of 23 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Owen D. Thomas
3/4/5
Chief Executive Officer of GP, Director
3/4/5
—
class O/S missing
$276,880
1,107,523 shares
 — 13 Feb 2026
Linde Douglas T.
3/4/5
President of GP, Director
3/4/5
—
class O/S missing
$201,765
807,060 shares
 — 13 Feb 2026
Michael E. Labelle
3/4/5
EVP and CFO of GP
3/4/5
—
class O/S missing
$81,094
300,395 shares
 — 04 Jun 2026
Bryan J. Koop
3/4/5
Executive Vice President of GP
3/4/5
—
class O/S missing
$55,517
222,070 shares
 — 13 Feb 2026
John J. Stroman
3/4/5
Executive Vice President of GP
3/4/5
—
class O/S missing
$26,330
105,321 shares
 — 30 Jan 2026
Robert E. Pester
3/4/5
Executive Vice President of GP
3/4/5
—
class O/S missing
$25,340
101,361 shares
 — 12 Feb 2024
Rodney Diehl
3/4/5
Executive Vice President of GP
3/4/5
—
class O/S missing
$24,922
99,690 shares
 — 30 Jan 2026
Peter Otteni V
3/4/5
Executive Vice President of GP
3/4/5
—
class O/S missing
$24,844
94,515 shares
 — 15 May 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 14 Aug 2025.

Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 0
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 0 0 $0 $0 $0
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 24 reporting-owner rows connected to BOSTON PROPERTIES LTD PARTNERSHIP. Open a relationship link for the CIK-to-CIK filing trail.

Rows
24
Largest Forms 3/4/5 holder
Owen D. Thomas
Net 12M change
$0
Latest report
04 Jun 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Owen D. Thomas Chief Executive Officer of GP, Director $276,880 Mixed 13 Feb 2026
Linde Douglas T. President of GP, Director $201,765 Mixed 13 Feb 2026
Michael E. Labelle EVP and CFO of GP $81,094 Mixed 04 Jun 2026
Bryan J. Koop Executive Vice President of GP $55,517 Mixed 13 Feb 2026
John J. Stroman Executive Vice President of GP $26,330 Mixed 30 Jan 2026
Robert E. Pester Executive Vice President of GP $25,340 Mixed 12 Feb 2024
Rodney Diehl Executive Vice President of GP $24,922 Mixed 30 Jan 2026
Peter Otteni V Executive Vice President of GP $24,844 Mixed 15 May 2026
Raymond A. Ritchey Senior EVP of GP $23,339 Mixed 13 Feb 2026
Donna D. Garesche EVP, Chief HR Officer of GP $11,349 Mixed 30 Jan 2026
Eric G. Kevorkian SVP, CLO of GP $11,076 Mixed 21 May 2026
Hilary J. Spann Executive Vice President of GP $9,980 Mixed 25 Feb 2026
Michael R. Walsh SVP & Chief Acctg. Off. of GP $9,205 Mixed 30 Jan 2026
Matthew J. Lustig Director $5,591 Mixed 29 May 2026
Joel Klein Director $4,876 Mixed 29 May 2026
Carol B. Einiger Director $4,496 Mixed 30 May 2024
Bruce W. Duncan Director $4,351 Mixed 29 May 2026
William H. Walton III Director $3,574 Mixed 29 May 2026
Frank D. Burt Senior Vice President of GP $3,024 Mixed 01 Feb 2022
Mary E. Kipp Director $2,540 Mixed 29 May 2026

Recent insider transactions for BOSTON PROPERTIES LTD PARTNERSHIP

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Michael E. Labelle Common OP Units Conversion of derivative security -100% -23,981 0 04 Jun 2026 Direct
Michael E. Labelle Common OP Units Conversion of derivative security 23,981 23,981 04 Jun 2026 Direct
Michael E. Labelle LTIP Units Conversion of derivative security -7.39% -23,981 300,395 04 Jun 2026 Direct
Joel Klein LTIP Units Award 17.1% 3,332 22,839 29 May 2026 Direct
William H. Walton III LTIP Units Award 23.3% 3,332 17,629 29 May 2026 Direct
Mary E. Kipp LTIP Units Award 32.8% 3,332 13,495 29 May 2026 Direct
Julie Richardson LTIP Units Award 136.9% 3,332 5,766 29 May 2026 Direct
Bruce W. Duncan LTIP Units Award 19.1% 3,332 20,739 29 May 2026 Direct
Tony West LTIP Units Award 63.2% 1,666 4,300 29 May 2026 Direct
Matthew J. Lustig LTIP Units Award 14.9% 3,332 25,697 29 May 2026 Direct
Eric G. Kevorkian Common OP Units Conversion of derivative security -53.2% -2,000 1,757 21 May 2026 Direct
Peter Otteni V Common OP Units Conversion of derivative security -100% -4,863 0 15 May 2026 Direct
Peter Otteni V Common OP Units Conversion of derivative security 4,863 4,863 15 May 2026 Direct
Peter Otteni V LTIP Units Conversion of derivative security -4.89% -4,863 94,515 15 May 2026 Direct
Hilary J. Spann Common OP Units Conversion of derivative security -100% -5,495 0 25 Feb 2026 Direct
Hilary J. Spann Common OP Units Conversion of derivative security 5,495 5,495 25 Feb 2026 Direct
Hilary J. Spann LTIP Units Conversion of derivative security -12.1% -5,495 39,923 25 Feb 2026 Direct
Owen D. Thomas LTIP Units Award 3.35% 35,930 1,107,523 13 Feb 2026 Direct
Michael E. Labelle LTIP Units Award 2.44% 7,736 324,376 13 Feb 2026 Direct
Raymond A. Ritchey LTIP Units Award 19.4% 15,163 93,357 13 Feb 2026 Direct
Linde Douglas T. LTIP Units Award 2.67% 20,973 807,060 13 Feb 2026 Direct
Bryan J. Koop LTIP Units Award 2.54% 5,501 222,070 13 Feb 2026 Direct
Donna D. Garesche LTIP Units Award 8.1% 3,401 45,399 30 Jan 2026 Direct
Eric G. Kevorkian LTIP Units Award 9.45% 3,827 44,306 30 Jan 2026 Direct
Peter Otteni V LTIP Units Award 8.44% 7,731 99,378 30 Jan 2026 Direct
John J. Stroman LTIP Units Award 12.4% 11,597 105,321 30 Jan 2026 Direct
Michael R. Walsh LTIP Units Award 14.4% 4,638 36,822 30 Jan 2026 Direct
Michael E. Labelle LTIP Units Award 7.71% 23,194 323,983 30 Jan 2026 Direct
Owen D. Thomas LTIP Units Award 7.08% 73,063 1,105,695 30 Jan 2026 Direct
Rodney Diehl LTIP Units Award 9.33% 8,504 99,690 30 Jan 2026 Direct
Linde Douglas T. LTIP Units Award 6.98% 52,574 805,994 30 Jan 2026 Direct
Bryan J. Koop LTIP Units Award 6.3% 13,143 221,791 30 Jan 2026 Direct
Rodney Diehl LTIP Units Award 86.8% 42,373 91,186 22 Dec 2025 Direct
Bryan J. Koop LTIP Units Award 39.7% 59,322 208,648 22 Dec 2025 Direct
Michael E. Labelle LTIP Units Award 31.5% 72,034 300,789 22 Dec 2025 Direct
John J. Stroman LTIP Units Award 82.5% 42,373 93,724 22 Dec 2025 Direct
Hilary J. Spann LTIP Units Award 130.6% 59,322 104,740 22 Dec 2025 Direct
Donna D. Garesche LTIP Units Award 67.7% 16,949 41,998 22 Dec 2025 Direct
Peter Otteni V LTIP Units Award 86% 42,373 91,647 22 Dec 2025 Direct
Owen D. Thomas LTIP Units Award 25.8% 211,864 1,032,632 22 Dec 2025 Direct
Linde Douglas T. LTIP Units Award 24.5% 148,305 753,420 22 Dec 2025 Direct
Eric G. Kevorkian LTIP Units Award 72% 16,949 40,479 22 Dec 2025 Direct
Raymond A. Ritchey Common OP Units Conversion of derivative security -29% -36,314 88,805 26 Nov 2025 Direct
Raymond A. Ritchey Common OP Units Conversion of derivative security 40.9% 36,314 125,119 26 Nov 2025 Direct
Raymond A. Ritchey LTIP Units Conversion of derivative security -28.2% -36,314 92,585 26 Nov 2025 Direct
Peter Otteni V Common OP Units Conversion of derivative security -100% -4,136 0 17 Nov 2025 Direct
Peter Otteni V Common OP Units Conversion of derivative security 4,136 4,136 17 Nov 2025 Direct
Peter Otteni V LTIP Units Conversion of derivative security -7.74% -4,136 49,274 17 Nov 2025 Direct
* marks a reported price that did not pass the local price check.
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