ENTERPRISE BANCORP INC /MA/ 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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STAVROPOULOS NICKOLAS	0001195025	18
ANSIN KEN S	0001282759	56
DUNCAN GEORGE L	0001282776	115
Covey Susan	0001670467	3
IRISH STEPHEN J	0001282780	32
BARONI GINO J	0001501922	16
Larochelle Steven R	0001462703	6
REID CAROL L	0001204124	10
KING MARY JANE	0001607494	19
Bullock Brian H	0001462696	2
CLANCY JOHN P JR	0001282778	2
GALLAGHER MICHAEL JOHN	0001637827	2
Rayno Peter	0001637601	5
CONWAY JAMES F III	0001183608	141
MAIN RICHARD W	0001282777	6
PEDROSO LUIS M	0001607462	45
CLEMENTI JOHN R	0001282765	11
ARMSTRONG WALLY	0001282782	8
COWAN CAROLE A	0001282783	7
DESCHENE NORMAND E	0001524843	5
DONAHUE NANCY L	0001282767	4
DUNN RYAN C	0001701817	10
FLYNN LUCY A	0001282768	11
GILMAN ROBERT R	0001282779	1
GRADY JOHN T JR	0001570577	1
HANSON ERIC W	0001282770	42
HARRINGTON JOHN P	0001282771	7
Hoyt Marlene P	0001670488	1
KOUTSOS JOHN A	0001587177	6
LERNER ARNOLD S	0001183634	5
Lussier Joseph R	0001790673	1
MARCOTTE JAMES A	0001282781	3
Moloney Jacqueline F	0001501968	30
PUTZIGER MICHAEL T	0001034912	94
SILVA DIANE J	0001515748	7
SOUCIE KEITH N	0001771418	1
SPINELLI MIKE A	0001282774	1
Szablak Chester J JR	0001462721	2
VILLANUCCI JANICE R	0001515883	1

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.