Marianne De Backer

CIK 1797819 · President and CEO · last filed 2026-04-07

Marianne De Backer is a President and CEO who has filed 29 SEC Form 4 insider transactions across 3 companies since 2020. The most recent filing shows the insider sold $664.4K of VIR on Apr 7, 2026. Across all open-market trades the lifetime net is −$2.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $14.1M 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

$14.10M

Companies

3

Total Filings

29

Lifetime Open-Market Net

-$2.77M

Filer Profile

Reported Address

177 E COLORADO BLVD
SUITE 700
PASADENA, CA 91105

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
VIR	President and CEO	1,001,263	$11.38	$11.40M	-$2.26M	9	2026-04-07
Kronos Bio, Inc. (KRON) Delisted	Director	14,083	$0.88	$12.4K	$47.9K	7	2023-06-26
ARWR	Director	31,267	$86.34	$2.70M	-$555.7K	8	2023-01-11

Recent Filings

29 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
2026-04-07	VIR	Sell (S)	−72,559	-$664.4K	EDGAR
2026-04-06	VIR	Notice (144)	−72,559	-$664.3K	EDGAR
2026-02-26	VIR	Sell (S)	−14,762	-$140.7K	EDGAR
2026-02-24	VIR	Notice (144)	−14,762	-$140.7K	EDGAR
2026-02-24	VIR	Mixed	+265,961	-$141.9K	EDGAR
2026-02-23	VIR	Notice (144)	−19,039	-$141.9K	EDGAR
2025-04-04	VIR	Sell (S)	−79,712	-$474.2K	EDGAR
2025-04-03	VIR	Notice (144)	−79,712	-$474.2K	EDGAR
2025-02-25	VIR	Mixed	+223,878	-$152.4K	EDGAR
2025-02-24	VIR	Notice (144)	−16,122	-$152.4K	EDGAR

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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.