ALNYLAM PHARMACEUTICALS, 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.

Read one actual disclosure before using it

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2026-10-06	2026-10-02	SUPRAN BRYAN	S	1,758	$226.88	Not reported

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

The displayed observation date is 2026-10-02 and its public availability date is 2026-10-06. Subtracting those calendar dates gives 4 days 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 S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

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.

SEC accession 0001178670-26-000068 ↗SEC accession 0001178670-26-000065 ↗

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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2026-10-06	2026-10-02	SUPRAN BRYAN	S	1,758	$226.88	Not reported
2026-09-22	2026-09-19	Greenstreet Yvonne	A	107	$0	Not 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 29 displayed rows: Officers and directors in the directory

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Vaishnaw Akshay	0001458494	116
Franchini Indrani Lall	0001708764	19
Ausiello Dennis A	0001381994	28
BONNEY MICHAEL W	0001219016	48
Mason Michael	0001514291	51
Barrett Peter	0001291895	62
Allen Patricia L	0001348587	63
Poulton Jeffrey V.	0001782962	123
Garg Pushkal	0001829252	180
MARAGANORE JOHN	0001180432	333
Greenstreet Yvonne	0001446125	163
SHARP PHILLIP A	0001226295	108
Gros David-Alexandre C	0001644489	5
Greene Barry E	0001291963	121
KEATING LAURIE	0001620743	45
CLARKE JOHN K	0001219015	57
SCHIMMEL PAUL	0001236447	83
Fanucci Marsha	0001298814	19
Fitzgerald Kevin Joseph	0001886431	152
McLaughlin Melissa	0002127187	14
PAUL STEVEN M	0001237564	88
PYOTT DAVID E I	0001051578	126
Reid Laurence	0001492749	18
Reitan Colleen F	0001740730	20
SCHULMAN AMY W	0001438226	35
STARR KEVIN P	0001192603	68
SUPRAN BRYAN	0001511797	1
Tanguler Tolga	0001849458	129
VINCENT JAMES L	0001332911	8

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.