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SEC Form 4 research

BOSTON PROPERTIES INC insider transactions

Inspect BOSTON PROPERTIES INC's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001037540
Reporting owners
45
Officers and directors
32
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-10-012026-09-30West TonyA388.64$61.11Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-30 and its public availability date is 2026-10-01. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 7 rows, 7 columns

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2026-10-012026-09-30West TonyA388.64$61.11Not reported
2026-10-012026-09-30KLEIN JOELA552.28$61.11Not reported
2026-10-012026-09-30Richardson JulieA409.1$61.11Not reported
2026-10-012026-09-30DUNCAN BRUCE WA572.74$61.11Not reported
2026-10-012026-09-30WALTON WILLIAM H IIIA388.64$61.11Not reported
2026-10-012026-09-30LUSTIG MATTHEW JA490.92$61.11Not reported
2026-10-012026-09-30KIPP MARY EA450.01$61.11Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 32 displayed rows: Officers and directors in the directory

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Einiger Carol B.00012896686
LUSTIG MATTHEW J00012033673
TURCHIN MARTIN000121711237
TWARDOCK DAVID A00012298914
BACOW LAWRENCE S00012298907
BUDINGER ZOE BAIRD00010363984
BURT FRANK D000121709331
DUNCAN BRUCE W0001105577233
DYKSTRA KAREN E000119884835
FLASHMAN ARTHUR00012170954
Garesche Donna D00019659321
JOHNSTON PETER D0001337218103
Kevorkian Eric G00019310483
KLEIN JOEL00011668323
KOOP BRYAN J000121709829
LABELLE MICHAEL E00014190459
LANDIS MITCHELL S000121710138
LINDE DOUGLAS T0001217102178
LINDE EDWARD H0001106184195
NORVILLE E MITCHELL0001217106119
Otteni Peter V00018629205
PATRICOF ALAN J000121710721
PESTER ROBERT E000121710841
POWERS JOHN FRANCIS00015952582
RITCHEY RAYMOND A0001219153145
SALOMON RICHARD E00012171092
SELSAM ROBERT E000121711028
SILVERSTEIN LORI W00016098121
Spann Hilary J.00019008353
Stroman John J00018628602
THOMAS OWEN D00013390812
ZUCKERMAN MORTIMER B0001106186167

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.