Susquehanna Securities, LLC

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

Stocks Covered

Latest Filing

Feb 13, 2026

Filings

PPBT

Purple Biotech Ltd.

SC 13G · Feb 13, 2026

5.2%

94.0M shares

LAES

SEALSQ Corp

SC 13G · Feb 13, 2026

5.3%

9.4M shares

XXI

Cantor Equity Partners, Inc.

SC 13G/A · Feb 13, 2026

0.0%

0 shares

XXI

Cantor Equity Partners, Inc.

SC 13G · Nov 13, 2025

5.8%

599K shares

API

Agora, Inc.

SC 13G/A · Aug 14, 2025

8.3%

24.7M shares

PZZA

Papa John’s International, Inc.

SC 13G · Nov 14, 2024

6.3%

2.1M shares

TWND

Nuburu, Inc. (f/k/a Tailwind Acquisition Corp.)

SC 13G · Feb 14, 2023

9.2%

297K shares

API

Agora, Inc.

SC 13G/A · Feb 14, 2023

5.9%

27.5M shares

API

Agora, Inc.

SC 13G · Feb 14, 2022

7.9%

27.5M shares

IVR

Invesco Mortgage Capital Inc.

SC 13G/A · Feb 14, 2022

3.6%

11.3M shares