Delisting risk
SYBX · NASDAQ · Biotechnology

Synlogic (SYBX)

Former synthetic biology drug developer now seeking strategic alternatives.

$1.20
At close−0.02 (−1.64%)

Breakdown13F · 13D/G · Form 4

Institutions2 holders · as of Mar 31, 20260.19%23.8K shares
Insiders5 holders · as of Oct 31, 202511.48%1.41M shares
Otherremainder88.33%10.82M shares

12.25M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Top shareholders13F · 13D/G · Form 4

HolderStakeSharesEvidence
Baselake Partners, LPInstitution
9.31%1.14M13Gfiled Jan 23, 2026
Kryzanowski, John A.Insider
5.99%733,41213Gfiled Feb 25, 2025
Radoff Bradley LouisInsider
5.14%629,21113Gfiled Apr 18, 2024
DRW Securities, LLCInstitution
0.19%23,76313Fas of Mar 31, 2026
Richard P. SheaInsiderdirector
0.13%15,506Form 4filed Apr 29, 2025
James P. FlynnInsiderdirector
0.12%15,000Form 4filed Apr 29, 2025
Mary Beth DooleyInsiderofficer: See Remarks below
0.10%12,744Form 4filed Oct 31, 2025
Hilltop National BankInstitution
0.00%2013Fas of Mar 31, 2026
Armistice Capital, LLCStrategic
9.99% of class, as filed13D/Gfiled Feb 14, 2024
Deerfield Private Design Fund III, L.P.Institution
5.22% of class, as filed13Gfiled Sep 6, 2017
FMR LLCStrategic
15.46% of class, as filed13D/Gfiled May 10, 2021
Hawkes Bay Master Investors (Cayman) L.P.Insider
5.30% of class, as filed13Gfiled Apr 16, 2018
Pfizer Inc.Strategic
1.67% of class, as filed13G/Afiled Feb 13, 2018
Peter KolchinskyInsider
9.90% of class, as filed13Gfiled Oct 1, 2021
Wellington Management Group LLPStrategic
14.00% of class, as filed13Gfiled May 10, 2018
Funicular Funds, LP1Strategic10 percent owner
27.04%3.31MForm 4filed Feb 16, 2024
New Enterprise Associates 14, L.P.2Strategic10 percent owner
23.86%2.92MForm 4filed Oct 6, 2023
Ginkgo Bioworks, Inc.3Strategic10 percent owner
3.45%422,718Form 4filed Jun 21, 2019
Peter J. Barris4Insider10 percent owner
2.30%281,929Form 4filed Jan 26, 2018
Michael Powell5Insiderdirector
0.31%38,331Form 4filed Jan 30, 2018
Antoine Awad6Insiderofficer: Chief Operating Officer
0.28%33,859Form 4filed Apr 4, 2024
Jose-Carlos Gutierrez-Ramos7Insiderdirector, officer: See Remarks
0.20%24,175Form 4filed Aug 30, 2017
Aoife Brennan8Insiderdirector, officer: See Remarks
0.14%17,087Form 4filed Apr 5, 2023
Todd Shegog7Insiderofficer: See Remarks
0.03%3,483Form 4filed Aug 30, 2017
Paul Francis Miller9Insiderofficer: Chief Scientific Officer
0.03%3,209Form 4filed Feb 14, 2019
  1. Last filed Feb 16, 2024; leaving the company requires no filing. Not in the bar.
  2. Last filed Oct 6, 2023; leaving the company requires no filing. Not in the bar.
  3. Last filed Jun 21, 2019; leaving the company requires no filing. Not in the bar.
  4. Last filed Jan 26, 2018; leaving the company requires no filing. Not in the bar.
  5. Last filed Jan 30, 2018; leaving the company requires no filing. Not in the bar.
  6. Last filed Apr 4, 2024; leaving the company requires no filing. Not in the bar.
  7. Last filed Aug 30, 2017; leaving the company requires no filing. Not in the bar.
  8. Last filed Apr 5, 2023; leaving the company requires no filing. Not in the bar.
  9. Last filed Feb 14, 2019; leaving the company requires no filing. Not in the bar.

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

2 holders · 23.8K shares · 0 new positions · 0 increased · 1 reduced · 23 closed

HolderShares% outstandingChg q/qFiled
DRW Securities, LLC23.8K0.19%−600May 13, 2026
Hilltop National Bank200.00%0Apr 2, 2026

Ownership statements13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Funicular Funds, LPincl. Ma-Weaver Jacob, Cable Car Capital, LP28.30%3.31M13DJul 29, 2026
New Enterprise Associates 14, L.P.incl. NEA Partners 14, L.P., Nea 14 GP, Ltd +5 more25.00%2.92M13DJul 29, 2026
Baselake Partners, LP9.70%1.14M13GJan 23, 2026
Kryzanowski, John A.6.27%733.4K13GFeb 25, 2025

Insider tradesForm 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Jul 27, 2026
New Enterprise Associates 14, L.P.director, 10 percent owner:
Purchase2,640,845$0.70002,640,845
Oct 29, 2025
Mary Beth Dooleyofficer: See Remarks below
Sale157$1.8112,744

CongressHouse and Senate disclosures

Not reported.