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Akshay Vaishnaw

CIK 1458494 · President of R&D · last filed 2026-04-20

Akshay Vaishnaw is a President of R&D who has filed 92 SEC Form 4 insider transactions across 3 companies since 2009. The most recent filing shows the insider sold $607.1K of SRRK on Apr 20, 2026. Across all open-market trades the lifetime net is −$56.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $41.5M across reported positions. 71 SEC filings were submitted jointly with ALNYLAM PHARMACEUTICALS, INC.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$41.46M

Companies

3

Total Filings

92

Lifetime Open-Market Net

-$56.54M

Filer Profile

Reported Address
300 THIRD STREET
CAMBRIDGE, MA 02139
Related Filers
ALNYLAM PHARMACEUTICALS, INC. — 71 joint filings, latest 2023-12-11
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
SRRK President of R&D 630,542 $55.33 $34.89M -$1.68M 13 2026-04-20
EDIT Director — $3.23 — $0 9 2024-06-03
ALNY President 24,706 $266.11 $6.57M -$54.86M 68 2023-08-07

Recent Filings

92 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-04-20 SRRK Sell (S) −12,246 -$607.1K EDGAR
2026-02-11 SRRK Grant (A) +47,021 $0 EDGAR
2026-01-15 SRRK Sell (S) −20,438 -$872.7K EDGAR
2025-05-30 SRRK Sell (S) −6,750 -$200.6K EDGAR
2025-05-29 SRRK Notice (144) −6,750 -$200.2K EDGAR
2025-05-06 SRRK Grant (A) — $0 EDGAR
2025-04-29 SRRK Grant (A) +600,000 $0 EDGAR
2024-07-01 SRRK Grant (A) +13,500 $0 EDGAR
2024-06-03 EDIT Grant (A) — $0 EDGAR
2023-12-11 ALNY Notice (144) −10,832 -$1.84M EDGAR
Showing 1–10 of 92
Page 1 of 10
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.