John T Dahldorf

CIK 1365494 · CFO · last filed 2026-05-22

"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

$26.6K

Companies

3

Total Filings

51

Lifetime Open-Market Net

-$10.42M

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
QSIAW Director $0.01 $0 4 2026-05-22
HYPR Director 19,586 $1.36 $26.6K $0 3 2022-06-13
Volcano Corp (VOLC) Delisted CFO 59,314 -$10.42M 43 2015-01-05

Recent Filings · Page 3 of 6

51 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2013-02-22 Volcano Corp (VOLC) Delisted Sell (S) −801 -$19.8K EDGAR
2013-02-22 Volcano Corp (VOLC) Delisted Grant (A) $0 EDGAR
2013-02-21 Volcano Corp (VOLC) Delisted Mixed +2,066 $0 EDGAR
2013-02-21 Volcano Corp (VOLC) Delisted Grant (A) $0 EDGAR
2013-02-07 Volcano Corp (VOLC) Delisted Mixed +2,854 -$18.0K EDGAR
2013-02-06 Volcano Corp (VOLC) Delisted Mixed +2,962 -$78.4K EDGAR
2012-04-27 Volcano Corp (VOLC) Delisted Mixed -$286.3K EDGAR
2012-04-17 Volcano Corp (VOLC) Delisted Mixed +3,631 -$55.4K EDGAR
2012-03-29 Volcano Corp (VOLC) Delisted Mixed -$311.8K EDGAR
2012-02-29 Volcano Corp (VOLC) Delisted Mixed +2,945 -$49.5K EDGAR
Showing 2130 of 51
Page 3 of 6
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.