T2 Biosystems, Inc. insider transactions

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.

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.

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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

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DEPTULA-HICKS DARLENE M	0001089409	6
CARELLA THOMAS J.	0001477767	10
ELMS STEVE	0001250195	48
Giffin Brett A.	0001892921	3
Barclay Alec	0001734339	5
Elsbree David B	0001292650	33
Gibbs Michael Terrence	0001665000	14
Sperzel John J III	0001602618	3
Ahuja Aparna	0001840844	1
Cima Michael J.	0001615992	5
Crane Alan L	0001294361	184
CUMMING JOHN W	0001181189	16
Dhanda Rahul	0001667658	6
Jones Adrian M	0001359316	103
Kalil Sarah O.	0001615652	2
Lapidus Stanley	0001678195	12
Lowery Thomas J.	0001615632	18
McDonough John	0001615937	7
Pare Anthony	0001418863	4
Pfaller Michael A.	0001615626	1
Spadoro Joanne	0001684042	1
Sprague John M	0001730056	5

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.

This issuer meets the currently published company-strategy eligibility rules.

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