Security key
87166L209
SYNLOGIC, INC. - Common Stock, par value $0.001 per share (SYBX)
CUSIP: 87166L209
Q2 2025 13F Holders as of 30 Jun 2025
- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Total 13F shares
- 6,771,875
- Total 13F value
- $8,600,285
- Share change
- -8,664
- SEC-reported price per share
- $1.27
- Number of holders
- 19
- Value change
- -$10,063
- Number of buys
- 5
- Number of sells
- 5
- Shares outstanding
- 11,691,088
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2025
Institutions
19
Top holders
10
SYBX full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
SYNLOGIC, INC. SEC filings
SYNLOGIC, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 87166L209
Recent filing periods:
Ownership snapshot
Top reported holders of SYBX - SYNLOGIC, INC. - Common Stock, par value $0.001 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
John A. Kryzanowski
Disclosed value leader
Cable Car Capital, LP
Comparable rows
15/15
Latest evidence
26 Apr 2025
13D/G
3/4/5
13F
Lead comparable stake: 6.3%
13D/G row: John A. Kryzanowski
Showing 1-6 of 15 holder rows.
Quick read
John A. Kryzanowski leads the comparable SEC ownership view at 6.3%.
15 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 John A. Kryzanowski's linked filing trail.
Comparable ownership
Top 5
John A. Kryzanowski
6.3%
Richard P. Shea
0.13%
James P. Flynn
0.13%
Cable Car Capital, LP
28%
NEA Management Company, LLC
25%
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 |
|---|---|---|---|---|---|
| John A. Kryzanowski |
13D/G
Kryzanowski, John A.
|
6.3%
|
$249,360
733,412 shares
|
$0 | 31 Dec 2024 |
| Richard P. Shea |
3/4/5
Director
|
0.13%
|
$20,002
15,506 shares
|
— | 26 Apr 2025 |
| James P. Flynn |
3/4/5
Director
|
0.13%
|
$19,350
15,000 shares
|
— | 26 Apr 2025 |
| Cable Car Capital, LP |
13F
Company
|
28%
|
$4,107,152
3,312,219 shares
|
— | 31 Mar 2025 |
| NEA Management Company, LLC |
13F
Company
|
25%
|
$3,624,237
2,922,772 shares
|
— | 31 Mar 2025 |
| VANGUARD GROUP INC |
13F
Company
|
1.6%
|
$226,922
183,002 shares
|
— | 31 Mar 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.
13F holder rows
Institutional holders as of Q2 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
19
Shares
6,771,875
Rows available
19
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2025 vs Q1 2026 Across Filers
Q1 2026 holders
2
Q2 2025 holders
19
Holder diff
17
| Investor | Q1 2026 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend