Nello Mainolfi

CIK 1821189 · Chief Executive Officer · last filed 2026-07-07

Nello Mainolfi is a Chief Executive Officer who has filed 54 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing, for KYMR, was dated Jul 7, 2026. Across all open-market trades the lifetime net is −$52.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $85.3M 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

$85.31M

Companies

1

Total Filings

54

Lifetime Open-Market Net

-$51.96M

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
KYMR	Chief Executive Officer	716,568	$119.05	$85.31M	-$51.96M	45	2026-07-07

Recent Filings

54 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
2026-07-07	KYMR	Notice (144)	−50,000	-$5.95M	EDGAR
2026-07-07	KYMR	Mixed	—	-$5.85M	EDGAR
2026-07-02	KYMR	Notice (144)	−80,000	-$9.14M	EDGAR
2026-07-02	KYMR	Mixed	—	-$9.06M	EDGAR
2026-04-29	KYMR	Notice (144)	−30,000	-$2.47M	EDGAR
2026-04-29	KYMR	Mixed	—	-$2.37M	EDGAR
2026-03-04	KYMR	Grant (A)	—	$0	EDGAR
2026-02-25	KYMR	Notice (144)	−30,000	-$2.74M	EDGAR
2026-02-25	KYMR	Mixed	—	-$2.65M	EDGAR
2026-01-06	KYMR	Exer (M)	+3,118	$100.0K	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.