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Public ownership evidence

Alnylam Pharmaceuticals, Inc. (ALNY) Ownership Disclosures

Read ALNY insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-14T23:32:50.005Z

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2026-10-062026-10-02SUPRAN BRYANS1,758Not reported

First displayed source row from Recent Form 4 activity. 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 0001178670-26-000068 ↗SEC 0001178670-26-000065 ↗13F 0002110329-26-000015 ↗

Recent Form 4 activity

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2026-10-062026-10-02SUPRAN BRYANS1,758Not reported
2026-09-222026-09-19Greenstreet YvonneA107Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-2926$7,827None
Cornerstone Financial Management LLC2026-03-312026-08-2914$4,632None
Cornerstone Financial Management LLC2025-12-312026-08-2913$5,169None
OPTIMIZE FINANCIAL INC.2026-06-302026-08-281,377$414,518None
Advisors Asset Management, Inc.2021-12-312026-08-283,644$617,950None
Advisors Asset Management, Inc.2022-12-312026-08-28956$227,193None
Advisors Asset Management, Inc.2020-06-302026-08-284,425$655,387None
Advisors Asset Management, Inc.2022-06-302026-08-282,854$416,000None
Advisors Asset Management, Inc.2021-09-302026-08-283,693$697,000None
Corient Private Wealth LP2026-06-302026-08-282,016$606,876None
Corient Private Wealth LP2026-06-302026-08-2821,953$6,608,319None
Formuepleje A/S2022-06-302026-08-2894,653$13,805,140None
Principia Wealth Advisory, LLC2026-06-302026-08-2710$3,010None
Principia Wealth Advisory, LLC2026-03-312026-08-275$1,654None
Advisors Asset Management, Inc.2024-03-312026-08-274,037$603,330None
Advisors Asset Management, Inc.2025-03-312026-08-275,851$1,579,887None
Advisors Asset Management, Inc.2022-09-302026-08-272,385$477,000None
Advisors Asset Management, Inc.2020-12-312026-08-274,538$590,000None
Advisors Asset Management, Inc.2022-03-312026-08-273,936$642,709None
Advisors Asset Management, Inc.2023-06-302026-08-27917$174,175None
Advisors Asset Management, Inc.2023-09-302026-08-271,292$228,813None
Advisors Asset Management, Inc.2023-03-312026-08-27951$190,504None
Advisors Asset Management, Inc.2021-03-312026-08-274,917$694,231None
Advisors Asset Management, Inc.2021-06-302026-08-273,685$625,000None
Advisors Asset Management, Inc.2020-09-302026-08-273,850$560,560None
Advisors Asset Management, Inc.2025-09-302026-08-274,522$2,062,032None
Advisors Asset Management, Inc.2023-12-312026-08-271,373$262,806None
Advisors Asset Management, Inc.2019-12-312026-08-268,041$926,082None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-03-312026-08-261,360$449,983None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-263,980$1,198,099None
Advisors Asset Management, Inc.2025-06-302026-08-254,545$1,482,079None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25199,861$60,164,157None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2560,164,157$199,861,000None
Advisors Asset Management, Inc.2024-09-302026-08-224,767$1,311,068None
Advisors Asset Management, Inc.2024-06-302026-08-224,578$1,112,454None
Advisors Asset Management, Inc.2024-12-312026-08-225,647$1,328,796None
Advisors Asset Management, Inc.2025-12-312026-08-224,303$1,711,088None
Advisors Asset Management, Inc.2020-03-312026-08-225,114$556,659None
Assenagon Asset Management S.A.2026-06-302026-08-22155,695$46,868,866None
Harvest Fund Management Co., Ltd2026-06-302026-08-219,981$3,005,000None
BOUSSARD & GAVAUDAN GESTION SAS2026-06-302026-08-2024,763$29,742,012None
Archer Investment Corp2026-06-302026-08-2010$3,010None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-208,156$2,455,322None
Beacon Pointe Advisors, LLC2026-06-302026-08-191,144$344,379None
Advisors Asset Management, Inc.2019-03-312026-08-1917,664$1,650,701None
Advisors Asset Management, Inc.2019-09-302026-08-196,594$530,289None
Advisors Asset Management, Inc.2019-06-302026-08-1914,042$1,018,888None
Orion Capital Management LLC2026-06-302026-08-192,155$648,720None
Liontrust Investment Partners LLP2026-06-302026-08-1926,759$8,055,262None
Ensign Peak Advisors, Inc2026-03-312026-08-1969,647$23,044,103None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗OPTIMIZE FINANCIAL INC. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.