Stephen F. Mahoney
CIK 1741389 · President and CEO · last filed 2026-03-09
"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
$6.57M
Companies
3
Total Filings
16
Lifetime Open-Market Net
$460.7K
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 |
|---|---|---|---|---|---|---|---|
| VRDN | President and CEO | 33,349 | $16.35 | $545.3K | $499.3K | 5 | 2026-03-09 |
| Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | See Remarks | 17,264 | $11.19 | $193.2K | -$38.6K | 7 | 2022-12-02 |
| KNSA | President & COO | 116,187 | $51.89 | $6.03M | $0 | 4 | 2019-09-19 |
Recent Filings · Page 2 of 2
16 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-09-16 | Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | Grant (A) | +20,000 | $0 | EDGAR |
| 2020-11-04 | Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-09-19 | KNSA | Grant (A) | — | $0 | EDGAR |
| 2019-03-06 | KNSA | Grant (A) | — | $0 | EDGAR |
| 2018-09-24 | KNSA | Grant (A) | — | $0 | EDGAR |
| 2018-05-29 | KNSA | Mixed | +6,392 | $0 | EDGAR |
Showing 11–16 of 16
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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.