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CastleKnight Master Fund LP

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

Total Filings

29

Stocks Covered

12

Latest Filing

Feb 17, 2026

Filings

TSAKOS ENERGY NAVIGATION LTD

SC 13G/A · Feb 17, 2026

4.1%

1.2M shares

LSB Industries, Inc.

SC 13G/A · Feb 17, 2026

4.5%

3.2M shares

Trinseo PLC

SC 13G/A · Feb 17, 2026

1.4%

517K shares

KLX Energy Services Holdings, Inc.

SC 13G/A · Feb 17, 2026

5.6%

999K shares

Innventure, Inc.

SC 13G/A · Feb 17, 2026

6.3%

4.4M shares

COMMUNITY HEALTH SYSTEMS INC

SC 13G/A · Feb 17, 2026

7.0%

9.7M shares

ASHFORD HOSPITALITY TRUST, INC.

SC 13G/A · Feb 17, 2026

6.4%

411K shares

Innventure, Inc.

SC 13G/A · Nov 14, 2025

5.2%

3.1M shares

LSB Industries, Inc.

SC 13G · Oct 10, 2025

6.8%

4.9M shares

Trinseo PLC

SC 13G/A · Aug 14, 2025

7.8%

2.8M shares

Babcock & Wilcox Enterprises, Inc.

SC 13G/A · Aug 14, 2025

4.4%

4.3M shares

KLX Energy Services Holdings, Inc.

SC 13G · May 15, 2025

6.8%

1.2M shares

Innventure, Inc.

SC 13G/A · May 15, 2025

6.3%

3.2M shares

Rent the Runway, Inc.

SC 13G · Mar 27, 2025

6.5%

243K shares

Sunnova Energy International Inc.

SC 13G · Mar 20, 2025

5.3%

6.9M shares

Upland Software, Inc.

SC 13G/A · Feb 14, 2025

3.7%

1.0M shares

COMMUNITY HEALTH SYSTEMS INC

SC 13G/A · Feb 7, 2025

6.8%

9.4M shares

COMMUNITY HEALTH SYSTEMS INC

SC 13G · Feb 7, 2025

5.0%

7.0M shares

Trinseo PLC

SC 13G · Dec 17, 2024

6.7%

2.4M shares

Innventure, Inc.

SC 13G · Nov 15, 2024

7.4%

4.0M shares

Community Health Systems, Inc.

SC 13G/A · Nov 14, 2024

2.8%

3.9M shares

Ashford Hospitality Trust, Inc.

SC 13G/A · Nov 14, 2024

9.2%

4.6M shares

Babcock & Wilcox Enterprises, Inc.

SC 13G · Sep 30, 2024

7.3%

6.7M shares

Upland Software, Inc.

SC 13G · Aug 8, 2024

5.1%

1.4M shares

Ashford Hospitality Trust, Inc.

SC 13G · Jan 5, 2024

6.6%

2.4M shares

Community Health Systems, Inc.

SC 13G · Dec 26, 2023

7.1%

9.7M shares

Loyalty Ventures Inc.

SC 13G/A · Feb 15, 2023

0.0%

0 shares

Loyalty Ventures Inc.

SC 13G/A · Feb 10, 2023

6.3%

1.6M shares

Loyalty Ventures Inc.

SC 13G · Nov 17, 2022

7.4%

1.8M shares