Robert I Blum

CIK 1288859 · President & CEO · last filed 2026-07-27

Robert I Blum is a President & CEO who has filed 288 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for CYTK, was dated Jul 27, 2026. Across all open-market trades the lifetime net is −$51.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $29.2M 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

$29.16M

Companies

2

Total Filings

288

Lifetime Open-Market Net

-$51.90M

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
CYTK	President & CEO	379,903	$76.76	$29.16M	-$51.98M	246	2026-07-27
Gamida Cell Ltd. (GMDA) Delisted	Director	96,500	$0.03	$3.2K	$77.5K	3	2023-02-10

Recent Filings

288 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
2026-07-27	CYTK	Mixed	—	-$527.0K	EDGAR
2026-07-14	CYTK	Mixed	−10	-$535.8K	EDGAR
2026-07-02	CYTK	Sell (S)	−7,500	-$636.9K	EDGAR
2026-07-01	CYTK	Notice (144)	−52,500	-$4.47M	EDGAR
2026-06-15	CYTK	Sell (S)	−7,500	-$528.5K	EDGAR
2026-05-28	CYTK	Sell (S)	−7,500	-$579.1K	EDGAR
2026-05-14	CYTK	Sell (S)	−7,500	-$584.4K	EDGAR
2026-04-29	CYTK	Sell (S)	−7,500	-$447.1K	EDGAR
2026-04-15	CYTK	Sell (S)	−7,500	-$490.3K	EDGAR
2026-04-01	CYTK	Notice (144)	−45,000	-$2.97M	EDGAR

Showing 1–10 of 288

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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.