DAVID J GRAINGER

CIK 1887115 · Chief Innovation Officer · last filed 2024-01-02

DAVID J GRAINGER is a Chief Innovation Officer who has filed 13 SEC Form 4 insider transactions across 1 company since 2021. The most recent filing shows the insider had shares withheld for taxes covering $37.4K of CNTA on Jan 2, 2024. Across all open-market trades the lifetime net is +$228.0K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $40.1M across reported positions.

"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.

Disclosed Exposure

$40.11M

Companies

1

Total Filings

13

Lifetime Open-Market Net

$228.0K

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
CNTA	Chief Innovation Officer	990,290	$40.50	$40.11M	$228.0K	13	2024-01-02

Recent Filings

13 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
2024-01-02	CNTA	Tax (F)	−4,700	-$37.4K	EDGAR
2023-10-03	CNTA	Tax (F)	−4,700	-$30.4K	EDGAR
2023-07-03	CNTA	Tax (F)	−4,290	-$25.3K	EDGAR
2023-04-04	CNTA	Tax (F)	−4,825	-$18.8K	EDGAR
2023-02-03	CNTA	Grant (A)	+77,200	$0	EDGAR
2023-01-13	CNTA	Tax (F)	−7,154	-$30.4K	EDGAR
2023-01-04	CNTA	Tax (F)	−2,497	-$7.7K	EDGAR
2022-11-23	CNTA	—	—	$0	EDGAR
2022-10-04	CNTA	Sell (S)	−5,181	-$20.7K	EDGAR
2022-07-06	CNTA	Grant (A)	+100,000	$0	EDGAR

Showing 1–10 of 13

Page 1 of 2 Next

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.