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George Bickerstaff

CIK 1329646 · last filed 2026-08-06

George Bickerstaff is a corporate insider who has filed 92 SEC Form 4 insider transactions across 6 companies since 2007. The most recent filing shows the insider sold $925.7K of CDNA on Aug 6, 2026. Across all open-market trades the lifetime net is −$4.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $9.6M across reported positions. 10 SEC filings were submitted jointly with Innoviva, Inc.

"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

$9.57M

Companies

6

Total Filings

92

Lifetime Open-Market Net

-$4.83M

Filer Profile

Reported Address
C/O VION PHARMACEUTICALS, INC.
4 SCIENCE PARK
NEW HAVEN, CT 06511
Related Filers
Innoviva, Inc. — 10 joint filings, latest 2022-04-27
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
CDNA Director 134,061 $50.26 $6.74M -$5.57M 67 2026-08-06
INVA Director 137,207 $20.66 $2.83M $651.7K 9 2022-04-27
INO Director 341 $1.25 $426 $0 3 2018-03-22
ARIAD PHARMACEUTICALS INC (ARIA) Delisted Director 0 — — $0 3 2017-02-16
BMP Sunstone CORP (BJGP) Delisted Director — — — $0 1 2008-04-30
VION PHARMACEUTICALS INC (VION) Delisted Director 8,554 — — $87.8K 2 2007-06-28

Recent Filings

92 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-06 CDNA Sell (S) −20,000 -$925.7K EDGAR
2026-08-06 CDNA Sell (S) −20,000 -$925.7K EDGAR
2026-08-05 CDNA Notice (144) −20,000 -$925.7K EDGAR
2026-06-16 CDNA Grant (A) +9,795 $0 EDGAR
2025-09-12 CDNA Exer (M) +29,136 $231.9K EDGAR
2025-06-17 CDNA Grant (A) +12,103 $0 EDGAR
2025-03-12 CDNA Sell (S) −20,000 -$367.1K EDGAR
2025-03-10 CDNA Notice (144) −20,000 -$367.1K EDGAR
2024-11-05 CDNA Exer (M) +7,481 $43.0K EDGAR
2024-06-20 CDNA Grant (A) — $0 EDGAR
Showing 1–10 of 92
Page 1 of 10
Form 4 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.
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.