SEC Form 4 reporting owner

Greenstreet Yvonne

Greenstreet Yvonne has filed 51 Form 4 transactions reported between November 26, 2025 and September 19, 2026, as Chief Executive Officer of ALNYLAM PHARMACEUTICALS, INC..

Name as filed: Greenstreet Yvonne

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$8.8M

39 lines

Companies

with Form 4 filings

Latest transaction

Sep 19, 2026

transaction date

Roles and reported holdings

ALNYALNYLAM PHARMACEUTICALS, INC.
Nov 26, 2025 – Sep 19, 2026
Chief Executive Officer
Held directly95,695 sh as of Mar 4, 2026 · Form 4
24 months: $8.8M sold

Transaction history

All 51 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 19, 2026	ALNYChief Executive Officer	Grant or awardCode A · direct	107	—	—	95,802	Form 4
Mar 4, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	265	$325.67	$86K@ $325.67	95,695	Form 4
Mar 4, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	345	$324.88	$112K@ $324.88	95,960	Form 4
Mar 4, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	973	$323.84	$315K@ $323.84	96,305	Form 4
Mar 4, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	444	$323.01	$143K@ $323.01	97,278	Form 4
Mar 4, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	368	$321.82	$118K@ $321.82	97,722	Form 4
Mar 4, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	274	$320.81	$88K@ $320.81	98,090	Form 4
Mar 4, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	129	$320.01	$41K@ $320.01	98,364	Form 4
Mar 4, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	135	$319.03	$43K@ $319.03	98,493	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Grant or awardCode A · direct	110,746	—	—	110,746	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Grant or awardCode A · direct	30,425	—	—	30,425	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	160	$332.64	$53K@ $332.64	98,628	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	399	$331.93	$132K@ $331.93	98,788	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	346	$330.85	$114K@ $330.85	99,187	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	722	$329.71	$238K@ $329.71	99,533	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	424	$328.71	$139K@ $328.71	100,255	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	1,399	$327.67	$458K@ $327.67	100,679	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	1,669	$326.81	$545K@ $326.81	102,078	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	1,098	$325.63	$358K@ $325.63	103,747	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	382	$324.65	$124K@ $324.65	104,845	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	200	$323.62	$65K@ $323.62	105,227	Form 4
Mar 2, 2026	ALNYChief Executive Officer	Grant or awardCode A · direct	13,844	—	—	105,427	Form 4
Feb 27, 2026	ALNYChief Executive Officer	Option exerciseCode M · direct	5,921	—	—	91,583	Form 4
Feb 13, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	6,958	$310.08	$2.2M@ $310.08	85,662	Form 4
Feb 12, 2026	ALNYChief Executive Officer	Grant or awardCode A · direct	14,209	—	—	92,620	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	94	$377.82	$36K@ $377.82	78,411	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	88	$374.44	$33K@ $374.44	78,623	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	21	$372.46	$8K@ $372.46	78,711	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	118	$370.87	$44K@ $370.87	78,732	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	253	$369.48	$93K@ $369.48	78,850	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	584	$368.62	$215K@ $368.62	79,103	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	261	$367.40	$96K@ $367.40	79,687	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	316	$366.41	$116K@ $366.41	79,948	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	1,395	$365.56	$510K@ $365.56	80,264	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	1,259	$364.83	$459K@ $364.83	81,659	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	301	$363.55	$109K@ $363.55	82,918	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	464	$362.38	$168K@ $362.38	83,219	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	624	$361.45	$226K@ $361.45	83,683	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	980	$360.22	$353K@ $360.22	84,307	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	537	$359.14	$193K@ $359.14	85,287	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	778	$358.18	$279K@ $358.18	85,824	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	607	$357.17	$217K@ $357.17	86,602	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	263	$356.09	$94K@ $356.09	87,209	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	269	$355.16	$96K@ $355.16	87,472	Form 4
Jan 12, 2026	ALNYChief Executive Officer	Open-market saleCode S · direct	247	$353.95	$87K@ $353.95	87,741	Form 4
Jan 11, 2026	ALNYChief Executive Officer	Grant or awardCode A · direct	19,003	—	—	87,988	Form 4
Nov 26, 2025	ALNYChief Executive Officer	Shares withheld for tax or exercise priceCode F · direct	1,121	$445.12	$499K@ $445.12	68,985	Form 4
Nov 26, 2025	ALNYChief Executive Officer	Option exerciseCode M · direct	659	$151.59	$100K@ $151.59	70,106	Form 4
Nov 26, 2025	ALNYChief Executive Officer	Option exerciseCode M · direct	847	$118.05	$100K@ $118.05	69,447	Form 4
Nov 26, 2025	ALNYChief Executive Officer	Option exerciseCode M · direct	2,352	$85.00	$200K@ $85.00	68,600	Form 4
Nov 26, 2025	ALNYChief Executive Officer	Option exerciseCode M · direct	839	$119.13	$100K@ $119.13	66,248	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.