# Alnylam Pharmaceuticals, Inc.: insider transactions

ALNY · Nasdaq · CIK 1178670 · [Healthcare](/sectors/healthcare.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/alny.md) · [Financials](/companies/alny/financials.md) · [Filings](/companies/alny/filings.md) · [Insiders](/companies/alny/insiders.md)

## All transactions: 6

Non-derivative transactions reported on Forms 4, newest first. Codes P (purchase) and S (sale) are open-market trades. Reported price is as stated on the form, not a market price. Filter with ?type= `open-market`, `purchase`, `sale`.

| Date | Insider | Role | Transaction | Shares | Reported price | Value | Filing |
| --- | --- | --- | --- | ---: | ---: | ---: | --- |
| 2017-05-31 | [Sanofi](/insiders/1121404.md) | 10% owner | Purchase (P) | 297,501 | $71.87 | $21.4m | [Form 4](/filings/0000899243-17-015022.md) |
| 2016-02-01 | [Sanofi](/insiders/1121404.md) | 10% owner | Purchase (P) | 205,030 | $69.75 | $14.3m | [Form 4](/filings/0000899243-16-012604.md) |
| 2015-01-29 | [Sanofi](/insiders/1121404.md) | 10% owner | Purchase (P) | 97,118 | $95.00 | $9.2m | [Form 4](/filings/0001104659-15-005927.md) |
| 2015-01-26 | [Sanofi](/insiders/1121404.md) | 10% owner | Purchase (P) | 647,448 | $95.00 | $61.5m | [Form 4](/filings/0001104659-15-004878.md) |
| 2015-01-22 | [Sanofi](/insiders/1121404.md) | 10% owner | Purchase (P) | 196,251 | $9,317.00 | $1.83bn | [Form 4](/filings/0001104659-15-004878.md) |
| 2015-01-22 | [Sanofi](/insiders/1121404.md) | 10% owner | Purchase (P) | 196,251 | $93.17 | $18.3m | [Form 4/A](/filings/0001104659-15-005906.md) |

Source: SEC EDGAR, Forms 4. Last ingested by Listed: Oct 31, 2026, 15:25 ET. No prices; not investment advice.