Security key
39868T105
Gritstone bio, Inc. - Common Stock, $0.0001 par value per share (GRTS)
CUSIP: 39868T105
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Common Stock, $0.0001 par value per share
- Total 13F shares
- 7,101
- Total 13F value
- $4,118
- Share change
- +7,101
- SEC-reported price per share
- $0.58
- Number of holders
- 1
- Value change
- +$4,118
- Number of buys
- 1
- Shares outstanding
- 160,529,963
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
1
Top holders
0
GRTS full security history
Ownership snapshot
Newer quarter: Q4 2025
Gritstone bio, Inc. SEC filings
Gritstone bio, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 39868T105
Recent filing periods:
Ownership snapshot
Top reported holders of GRTS - Gritstone bio, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Redmile Group, LLC
Disclosed value leader
Andrew R. Allen
Comparable rows
1/15
Latest evidence
04 Apr 2025
13D/G
3/4/5
Lead comparable stake: 8.2%
14 rows are not safely comparable across share classes.
13D/G row: Redmile Group, LLC
Showing 1-6 of 15 holder rows.
Quick read
Redmile Group, LLC leads the comparable SEC ownership view at 8.2%.
1 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Redmile Group, LLC's linked filing trail.
Comparable ownership
Top 1
Redmile Group, LLC
8.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Redmile Group, LLC |
13D/G
|
8.2%
|
$131,635
13,163,457 shares
|
$0 | 31 Dec 2024 |
| Andrew R. Allen |
3/4/5
PRESIDENT AND CEO, Director
|
—
mixed-class rows
|
$1,821,838
3,049,635 shares
mixed-class rows
|
— | 24 Jun 2024 |
| Karin Jooss |
3/4/5
EVP, Head of Research and Development
|
—
mixed-class rows
|
$511,483
918,526 shares
mixed-class rows
|
— | 15 May 2024 |
| Roman Yelensky |
3/4/5
Executive Vice President and Chief Technology Officer
|
—
class O/S missing
|
$446,440
234,672 shares
|
— | 08 Mar 2021 |
| James Cho |
3/4/5
SVP, CHIEF ACCOUNTING OFFICER
|
— |
$295,106
|
— | 04 Apr 2025 |
| Erin Jones |
3/4/5
EVP, CHIEF OPERATING OFFICER
|
—
mixed-class rows
|
$268,859
594,293 shares
mixed-class rows
|
— | 15 May 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Archived quarter
Historical 13F summary for Q3 2025
This older quarter remains available as an indexed ownership summary. Detailed holder rows are no longer kept in the hot table for this period.