Synlogic, Inc. - Common Stock, par value $0.001 per share (SYBX) Institutional Ownership

13F Institutional Holders and Ownership History from Q3 2023 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.001 per share
Symbol
SYBX on Nasdaq
Shares outstanding
11,752,577
Price per share
$1.12
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
432,435
Total reported value
$484,329
% of total 13F portfolios
0%
Share change
+97,615
Value change
+$109,325
Number of holders
16
Price from insider filings
$1.12
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Synlogic, Inc. - Common Stock, par value $0.001 per share (SYBX) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Baselake Partners, LP 9.7% $1,265,400 1,140,000 Baselake Partners, LP 20 Jan 2026
Radoff Bradley Louis 4.4% $894,400 520,000 Radoff Bradley Louis 30 Sep 2025

As of 31 Dec 2025, 16 institutional investors reported holding 432,435 shares of Synlogic, Inc. - Common Stock, par value $0.001 per share (SYBX). This represents 3.7% of the company’s total 11,752,577 outstanding shares.

Institutional Holders of Synlogic, Inc. - Common Stock, par value $0.001 per share (SYBX) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 432,435 $484,329 +$109,325 $1.12 16
2025 Q3 6,655,293 $11,108,525 -$178,424 $1.69 23
2025 Q2 6,771,875 $8,600,285 -$10,063 $1.27 19
2025 Q1 6,780,519 $8,407,849 +$20,324 $1.24 18
2024 Q4 6,764,147 $9,456,349 -$88,239 $1.39 17
2024 Q3 6,826,001 $10,170,748 -$168,603 $1.49 16
2024 Q2 6,939,069 $10,408,615 +$22,340 $1.50 17
2024 Q1 6,924,167 $12,394,270 +$1,589,732 $1.79 16
2023 Q4 4,715,822 $18,155,320 -$1,046,769 $3.85 23
2023 Q3 2,378,844 $6,684,705 +$6,627,246 $2.81 25