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Steven George Hughes

CIK 1747528 · Chief Medical Officer · last filed 2026-04-22

Steven George Hughes is a Chief Medical Officer who has filed 19 SEC Form 4 insider transactions across 4 companies since 2018. The most recent filing, for RNA, was dated Apr 22, 2026. Across all open-market trades the lifetime net is −$4.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $839.9K across reported positions.

"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

$839.9K

Companies

4

Total Filings

19

Lifetime Open-Market Net

-$4.86M

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
RNA Chief Medical Officer 73,097 $11.49 $839.9K -$4.86M 12 2026-04-22
Avidity Biosciences, Inc. (RNAM) Delisted Chief Medical Officer 0 — — $0 1 2026-02-27
ARCT Chief Development Officer — $5.75 — $0 2 2020-12-22
VivoSim Labs, INC. (ONVO) Delisted Chief Medical Officer 577 $2.04 $1.2K -$6.4K 2 2019-08-19

Recent Filings

19 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
2026-04-22 RNA Grant (A) +30,000 $0 EDGAR
2026-02-27 Avidity Biosciences, Inc. (RNAM) Delisted Disp (D) −115,857 $0 EDGAR
2026-01-23 RNA Sell (S) −4,895 -$354.6K EDGAR
2026-01-09 RNA Sell (S) −2,373 -$171.4K EDGAR
2025-10-24 RNA Mixed — -$82.6K EDGAR
2025-09-23 RNA Mixed — -$67.2K EDGAR
2025-09-17 RNA Mixed — -$59.9K EDGAR
2025-08-22 RNA Mixed — -$80.0K EDGAR
2025-08-15 RNA Mixed — -$61.8K EDGAR
2025-08-13 Avidity Biosciences, Inc. (RNAM) Delisted Notice (144) −9,709 -$448.8K EDGAR
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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.