John F Sheridan
CIK 1365369 · PRESIDENT & CEO · last filed 2026-06-02
"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
$2.16M
Companies
3
Total Filings
96
Lifetime Open-Market Net
-$16.60M
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 |
|---|---|---|---|---|---|---|---|
| TNDM | PRESIDENT & CEO | 130,163 | $16.60 | $2.16M | -$14.92M | 82 | 2026-06-02 |
| Acutus Medical, Inc. (AFIB) Delisted | Director | 24,347 | $0.09 | $2.2K | $0 | 3 | 2023-06-15 |
| Volcano Corp (VOLC) Delisted | Exec VP of R&D & Operations | 9,947 | — | — | -$1.68M | 11 | 2010-02-05 |
Recent Filings · Page 9 of 10
96 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2014-10-03 | TNDM | Mixed | — | -$23.9K | EDGAR |
| 2014-09-03 | TNDM | Mixed | — | -$25.8K | EDGAR |
| 2014-08-04 | TNDM | Mixed | — | -$27.9K | EDGAR |
| 2014-07-02 | TNDM | Mixed | — | -$30.6K | EDGAR |
| 2013-11-14 | TNDM | Grant (A) | — | $0 | EDGAR |
| 2010-02-05 | Volcano Corp (VOLC) Delisted | Mixed | +3,242 | -$45.6K | EDGAR |
| 2010-01-11 | Volcano Corp (VOLC) Delisted | Mixed | — | -$637.9K | EDGAR |
| 2009-03-02 | Volcano Corp (VOLC) Delisted | Mixed | +1,526 | -$19.3K | EDGAR |
| 2009-02-05 | Volcano Corp (VOLC) Delisted | Grant (A) | — | $0 | EDGAR |
| 2008-11-18 | Volcano Corp (VOLC) Delisted | Mixed | — | -$70.9K | EDGAR |
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.