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Westchester Capital Management, LLC

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

Total Filings

46

Stocks Covered

31

Latest Filing

Feb 13, 2026

Filings

DT Cloud Star Acquisition Corporation

SC 13G/A · Feb 13, 2026

5.1%

184K shares

YHN Acquisition I Limited

SC 13G/A · Feb 13, 2026

0.0%

0 shares

FACT II Acquisition Corp.

SC 13G/A · Feb 13, 2026

5.0%

921K shares

Blue Acquisition Corp.

SC 13G/A · Feb 13, 2026

1.8%

370K shares

Agriculture & Natural Solutions Acquisition Corporation

SC 13G/A · Feb 13, 2026

6.0%

2.0M shares

Integrated Wellness Acquisition Corp

SC 13G/A · Feb 13, 2026

0.0%

0 shares

Horizon Space Acquisition I Corp.

SC 13G/A · Feb 13, 2026

0.0%

0 shares

Patria Latin American Opportunity Acquisition Corp.

SC 13G/A · Feb 13, 2026

0.0%

0 shares

Sizzle Acquisition Corp. II

SC 13G · Nov 14, 2025

6.6%

1.6M shares

Nabors Energy Transition Corp. II

SC 13G · Nov 14, 2025

9.4%

1.3M shares

Integrated Wellness Acquisition Corp

SC 13G · Nov 14, 2025

9.1%

108K shares

Lakeshore Acquisition III Corp.

SC 13G · Nov 14, 2025

7.7%

683K shares

Globa Terra Acquisition Corp

SC 13G · Nov 14, 2025

8.0%

1.4M shares

Haymaker Acquisition Corp. 4

SC 13G/A · Nov 14, 2025

8.3%

1.9M shares

INFLECTION POINT ACQUISITION CORP. IV

SC 13G/A · Nov 14, 2025

5.0%

1.3M shares

AA Mission Acquisition Corp.

SC 13G · Nov 14, 2025

7.6%

2.7M shares

Blue Acquisition Corp/Cayman

SC 13G · Nov 14, 2025

6.9%

1.4M shares

Kodiak AI, Inc.

SC 13G/A · Nov 14, 2025

0.0%

0 shares

Rigel Resource Acquisition Corp.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

DT Cloud Acquisition Corp

SC 13G/A · Aug 14, 2025

0.0%

0 shares

GSR III Acquisition Corp.

SC 13G/A · Aug 14, 2025

2.2%

516K shares

FACT II Acquisition Corp.

SC 13G · Aug 14, 2025

5.9%

1.1M shares

Ares Acquisition Corp II

SC 13G/A · Aug 14, 2025

6.2%

3.8M shares

Plum Acquisition Corp, IV

SC 13G · Aug 14, 2025

6.6%

1.2M shares

DT Cloud Star Acquisition Corp

SC 13G · Aug 14, 2025

7.0%

620K shares

SIM Acquisition Corp. I

SC 13G · Aug 14, 2025

5.3%

1.2M shares

Aldel Financial II Inc.

SC 13G/A · Aug 14, 2025

4.9%

1.2M shares

TLGY ACQUISITION CORP

SC 13G/A · Aug 14, 2025

0.0%

0 shares

Ares Acquisition Corp II

SC 13G/A · May 14, 2025

7.9%

4.0M shares

YHN Acquisition I Ltd

SC 13G · May 14, 2025

5.1%

398K shares

K&F GROWTH ACQUISITION CORP. II

SC 13G · May 14, 2025

5.9%

1.7M shares

GigCapital7 Corp.

SC 13G · May 14, 2025

5.0%

999K shares

Bleichroeder Acquisition Corp. I

SC 13G · May 14, 2025

6.0%

1.5M shares

Oak Woods Acquisition Corp

SC 13G/A · May 14, 2025

0.0%

0 shares

Haymaker Acquisition Corp. 4

SC 13G · May 14, 2025

5.0%

1.2M shares

GSR III Acquisition Corp.

SC 13G · May 14, 2025

7.9%

1.9M shares

DT Cloud Acquisition Corp

SC 13G · May 14, 2025

6.6%

469K shares

Aldel Financial II Inc.

SC 13G · May 14, 2025

5.0%

1.2M shares

Slam Corp.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Agriculture & Natural Solutions Acquisition Corp

SC 13G · Feb 14, 2025

7.1%

2.5M shares

Fortune Rise Acquisition Corp

SC 13G · Feb 14, 2025

5.7%

86K shares

Horizon Space Acquisition I Corp.

SC 13G · Feb 14, 2025

7.1%

297K shares

Integrated Wellness Acquisition Corp

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Cartesian Growth Corp II

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Global Star Acquisition Inc.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Inflection Point Acquisition Corp. II

SC 13G/A · Feb 14, 2025

0.0%

0 shares