Steven George Hughes
CIK 1747528 · Chief Medical Officer · last filed 2026-04-22
"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 · Page 2 of 2
19 filingsInsider 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 |
|---|---|---|---|---|---|
| 2025-08-08 | RNA | Mixed | −33,983 | -$2.90M | EDGAR |
| 2025-08-06 | Avidity Biosciences, Inc. (RNAM) Delisted | Notice (144) | −81,434 | -$3.12M | EDGAR |
| 2025-03-21 | RNA | Sell (S) | −9,578 | -$297.5K | EDGAR |
| 2025-01-23 | RNA | Sell (S) | −3,947 | -$112.9K | EDGAR |
| 2025-01-08 | RNA | Grant (A) | +25,000 | $0 | EDGAR |
| 2020-12-22 | ARCT | Grant (A) | — | $0 | EDGAR |
| 2020-02-20 | ARCT | Grant (A) | — | $0 | EDGAR |
| 2019-08-19 | VivoSim Labs, INC. (ONVO) Delisted | Sell (S) | −22,230 | -$6.4K | EDGAR |
| 2018-08-15 | VivoSim Labs, INC. (ONVO) Delisted | Grant (A) | +160,714 | $0 | EDGAR |
Showing 11–19 of 19
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Page 2 of 2
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.
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.