Are insiders buying or selling Gritstone bio, Inc. stock?

Based on the last 50 SEC Form 4 filings, Gritstone bio, Inc. insiders made 0 open-market purchases and 3 open-market sales.

Where can I see Gritstone bio, Inc. insider trading activity?

SEC Form 4 filings for Gritstone bio, Inc. (GRTS) are publicly available on EDGAR and aggregated at form4api.com/companies/grts.

// company-profile

Name: Gritstone bio, Inc. Insider Trading Data
Creator: Form4API
License: https://www.sec.gov/privacy.htm

GRTS

SectorBiological Products, (No Diagnostic Substances)Inc.DEFilings36Insiders13

// api This Gritstone bio, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.

// activity-summary

No insider transactions in the last 30 days.

No insider activity recorded for GRTS in the last 90 days.

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

Date	Insider	Company	Type	Shares	Price	Value	1d	1w	1m	3m	6m
Apr 4, 2025	Agarwal Shefali	GRTS	J	19,000	$0.00	$0K	—	—	—	—	—
Apr 4, 2025	Rizvi Naiyer	GRTS	J	7,500	$0.00	$0K	—	—	—	—	—
Apr 4, 2025	Rizvi Naiyer	GRTS	J	38,000	$0.00	$0K	—	—	—	—	—
Apr 4, 2025	Rizvi Naiyer	GRTS	J	937	$0.00	$0K	—	—	—	—	—
Apr 4, 2025	Rizvi Naiyer	GRTS	J	10,000	$0.00	$0K	—	—	—	—	—

45 more transactions hidden

Free account · No credit card required

Building something? Get API access →

Browse insider trading activity for other actively-filed companies.