HELICOS BIOSCIENCES CORP 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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Officers and directors in the directory

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Barrett Peter	0001291895	62
Flagship Pioneering, LLC	0001400240	83
AFEYAN NOUBAR	0001222012	509
AGTC ADVISORS FUND LP	0001131095	15
AGTC Partners, L.P.	0001419730	20
Allison Elisabeth	0001293132	1
Applied Genomic Technology Capital Fund LP	0001399779	15
ATLAS VENTURE ASSOCIATES V LP	0001133805	45
Atlas Venture Associates VI, L.P.	0001292359	19
ATLAS VENTURE ENTREPRENEURS FUND V LP	0001133807	45
ATLAS VENTURE ENTREPRENEURS FUND VI LP	0001143182	22
ATLAS VENTURE FUND V LP	0001106910	45
Atlas Venture Fund VI GmbH & Co KG	0001292358	22
ATLAS VENTURE FUND VI LP	0001136148	22
ATWOOD BRIAN G	0001266567	41
Flagship Ventures Fund 2004 L P	0001299790	5
Flagship Ventures General Partner LLC	0001400249	4
HEF VI, Limited Partnership	0001407941	3
HIGGINS ROBERT F	0001013712	9
HIGHLAND CAPITAL PARTNERS VI LP	0001135500	6
HIGHLAND MANAGEMENT PARTNERS VI L P	0001253995	11
Lowy Ronald A	0001289369	1
NewcoGen Elan LLC	0001399781	16
NEWCOGEN EQUITY INVESTORS LLC	0001097546	22
NEWCOGEN GROUP LLC	0001097548	20
NewcoGen Group, Inc.	0001400241	56
NewcoGen PE LLC	0001399783	17
ST NewcoGen LLC	0001399780	17

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.