Marianna Mancini

CIK 1838112 · Chief Operating Officer · last filed 2026-07-29

Marianna Mancini is a Chief Operating Officer who has filed 28 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing, for VKTX, was dated Jul 29, 2026. Across all open-market trades the lifetime net is −$32.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $13.4M 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

$13.42M

Companies

2

Total Filings

28

Lifetime Open-Market Net

-$32.19M

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
VKTX	Chief Operating Officer	422,760	$31.74	$13.42M	-$32.19M	18	2026-07-29
Viking Therapeutics, Inc. (VKTXW) Delisted	Chief Operating Officer	169,952	$4.60	$781.8K	$0	2	2021-01-19

Recent Filings

28 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
2026-07-29	VKTX	Notice (144)	−18,217	-$609.6K	EDGAR
2026-07-29	VKTX	Mixed	+13,450	-$609.6K	EDGAR
2026-01-05	VKTX	Notice (144)	−57,661	-$1.90M	EDGAR
2026-01-05	VKTX	Mixed	+15,388	-$1.90M	EDGAR
2025-10-28	VKTX	Notice (144)	−6,185	-$216.5K	EDGAR
2025-10-28	VKTX	Mixed	+4,932	-$216.5K	EDGAR
2025-07-03	VKTX	Notice (144)	−4,266	-$118.5K	EDGAR
2025-07-03	VKTX	Mixed	+3,401	-$118.5K	EDGAR
2025-01-06	VKTX	Notice (144)	−54,215	-$2.32M	EDGAR
2025-01-06	VKTX	Mixed	+11,985	-$2.32M	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.