Steven George Hughes
CIK 1747528 · Chief Medical Officer · last filed 2026-09-22
Steven George Hughes is a Chief Medical Officer who has filed 20 SEC Form 4 insider transactions across 4 companies since 2018. The most recent filing shows the insider had shares withheld for taxes covering $192.1K of RNA on Sep 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 $415.7K 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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
RNA price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
10578 SCIENCE CENTER DRIVE, SUITE 125
SAN DIEGO, CA 92121
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RNA | Chief Medical Officer | 51,638 | $8.05 | $415.7K | -$4.86M | 13 | 2026-09-22 |
| Avidity Biosciences, Inc. (RNAM) Delisted | Chief Medical Officer | 0 | — | — | $0 | 1 | 2026-02-27 |
| ARCT | Chief Development Officer | — | $9.91 | — | $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
20 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-22 | RNA | Tax (F) | −21,459 | -$192.1K | EDGAR |
| 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 |
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.