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Portolan Capital Management, LLC

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

Total Filings

70

Stocks Covered

38

Latest Filing

Feb 26, 2026

Filings

Richardson Electronics, Ltd.

SC 13G · Aug 15, 2022

6.2%

719K shares

Lantronix, Inc.

SC 13G · May 27, 2022

5.7%

2.0M shares

APPLIED GENETIC TECHNOLOGIES CORPORATION

SC 13G · Feb 15, 2022

5.2%

2.2M shares

BM Technologies, Inc.

SC 13G/A · Feb 11, 2022

2.1%

264K shares

APPLIED GENETIC TECHNOLOGIES CORPORATION

SC 13G/A · Feb 11, 2022

3.2%

1.4M shares

Aemetis, Inc.

SC 13G/A · Feb 11, 2022

0.3%

106K shares

BlueLinx Holdings Inc.

SC 13G/A · Feb 11, 2022

4.7%

452K shares

iCAD, Inc.

SC 13G/A · Feb 11, 2022

0.0%

0 shares

Harvard Bioscience, Inc.

SC 13G/A · Feb 11, 2022

6.2%

2.5M shares

Full House Resorts, Inc.

SC 13G/A · Feb 11, 2022

5.4%

1.8M shares

Destination XL Group, Inc.

SC 13G/A · Feb 11, 2022

1.8%

1.2M shares

Yellow Corporation

SC 13G/A · Feb 11, 2022

2.4%

1.3M shares

Waitr Holdings, Inc.

SC 13G/A · Feb 11, 2022

0.0%

0 shares

TravelCenters of America Inc.

SC 13G/A · Feb 11, 2022

4.2%

615K shares

Recro Pharma, Inc.

SC 13G/A · Feb 11, 2022

0.0%

0 shares

Qumu Corporation

SC 13G/A · Feb 11, 2022

0.0%

0 shares

PFSweb, Inc.

SC 13G/A · Feb 11, 2022

0.1%

29K shares

Inotiv, Inc.

SC 13G/A · Feb 11, 2022

3.0%

728K shares

Identiv, Inc.

SC 13G/A · Feb 11, 2022

7.8%

1.7M shares

Charah Solutions, Inc.

SC 13G/A · Jan 6, 2022

10.5%

3.5M shares