Security key
81750R102
Seres Therapeutics, Inc. - COMMON STOCK (MCRB)
CUSIP: 81750R102
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 1,595
- Total 13F value
- $1,509
- Share change
- +1,595
- SEC-reported price per share
- $0.95
- Number of holders
- 1
- Value change
- +$1,509
- Number of buys
- 1
- Shares outstanding
- 170,403,883
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
MCRB full security history
Ownership snapshot
Newer quarter: Q4 2025
Seres Therapeutics, Inc. SEC filings
Seres Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 81750R102
Recent filing periods:
Ownership snapshot
Top reported holders of MCRB - Seres Therapeutics, Inc. - COMMON STOCK (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
FMR LLC
Disclosed value leader
Nutritional Health LTP Fu...
Comparable rows
1/15
Latest evidence
30 Jun 2025
13D/G
13F
3/4/5
Lead comparable stake: 3.1%
14 rows are not safely comparable across share classes.
13D/G row: FMR LLC
Showing 1-6 of 15 holder rows.
Quick read
FMR LLC leads the comparable SEC ownership view at 3.1%.
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 FMR LLC's linked filing trail.
Comparable ownership
Top 1
FMR LLC
3.1%
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 |
|---|---|---|---|---|---|
| FMR LLC |
13D/G
13F
Company
|
3.1%
Reported 13D/G
· 30 Jun 2025
|
$3,377,609
268,704 shares
|
-$2,827,043 | 30 Jun 2025 |
| Nutritional Health LTP Fund General Partner LLC |
3/4/5
10%+ Owner
|
—
denominator unverified
|
$31,715,635
23,493,063 shares
|
— | 05 Jul 2022 |
| NESTLE SA |
3/4/5
10%+ Owner
|
—
denominator unverified
|
$18,378,993
21,879,753 shares
|
— | 30 Sep 2024 |
| Flagship Pioneering Fund VII General Partner LLC |
3/4/5
10%+ Owner
|
—
denominator unverified
|
$7,864,418
5,825,495 shares
|
— | 05 Jul 2022 |
| Flagship Pioneering, LLC |
13F
Company
|
—
denominator unverified
|
$12,841,492
1,155,850 shares
|
— | 30 Jun 2025 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$3,245,186
292,096 shares
|
— | 30 Jun 2025 |
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.