DAVID S KABAKOFF

CIK 1024008 · last filed 2025-06-24

"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

$10.42M

Companies

3

Total Filings

52

Lifetime Open-Market Net

-$63.21M

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
NXTC Director $2.08 $0 7 2025-06-24
CSTL Director 503,577 $20.70 $10.42M -$63.36M 23 2021-06-21
Trius Therapeutics Inc (TSRX) Delisted Director 58,265 $150.0K 6 2013-05-23

Recent Filings · Page 2 of 6

52 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2021-03-18 CSTL Sell (S) −130,000 -$8.31M EDGAR
2020-10-13 CSTL Sell (S) −50,000 -$2.71M EDGAR
2020-10-08 CSTL Sell (S) −50,000 -$2.65M EDGAR
2020-10-06 CSTL Sell (S) −50,000 -$2.60M EDGAR
2020-09-08 CSTL Sell (S) −25,000 -$1.15M EDGAR
2020-08-21 CSTL Sell (S) −75,000 -$3.36M EDGAR
2020-08-12 CSTL Sell (S) −25,000 -$1.05M EDGAR
2020-07-21 CSTL Sell (S) −25,000 -$1.08M EDGAR
2020-07-13 CSTL Sell (S) −50,000 -$2.18M EDGAR
2020-06-23 CSTL Sell (S) −200,000 -$8.14M EDGAR
Showing 1120 of 52
Page 2 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.