13D/13G Filings - Portolan Capital Management, LLC

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Time period
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Reported
DateTime
Transaction
Date
Type Company
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev Report View
2025-04-14
3:34 pm
Purchase
2025-04-07 13G Castle Biosciences, Inc.
CSTL
Portolan Capital Management, LLC 1,611,099
5.650%
1,611,099increase
(New Position)
Filing
History
2025-04-11
1:26 pm
Purchase
2025-04-04 13G Mama's Creations, Inc.
MAMA
Portolan Capital Management, LLC 1,971,037
5.240%
1,971,037increase
(New Position)
Filing
History
2025-02-13
4:44 pm
Sale
2024-12-31 13G Orion Group Holdings, Inc.
ORN
Portolan Capital Management, LLC 448,691
1.150%
-1,357,884decrease
(-75.16%)
Filing
History
2025-02-13
4:43 pm
Sale
2024-12-31 13G GEN Restaurant Group, Inc.
GENK
Portolan Capital Management, LLC 283,774
5.780%
-88,985decrease
(-23.87%)
Filing
History
2025-02-13
4:41 pm
Sale
2024-12-31 13G The Honest Company, Inc.
HNST
Portolan Capital Management, LLC 5,359,001
5.310%
-2,197,984decrease
(-29.09%)
Filing
History
2025-02-06
4:42 pm
Purchase
2025-01-30 13G Vishay Precision Group, Inc.
VPG
Portolan Capital Management, LLC 770,763
6.310%
770,763increase
(New Position)
Filing
History
2024-11-13
12:42 pm
Purchase
2024-09-30 13G GEN Restaurant Group, Inc.
GENK
Portolan Capital Management, LLC 372,759
7.670%
97,141increase
(+35.24%)
Filing
History
2024-11-13
12:41 pm
Purchase
2024-09-30 13G Quanterix Corporation
QTRX
Portolan Capital Management, LLC 2,520,686
6.570%
602,656increase
(+31.42%)
Filing
History
2024-11-13
12:40 pm
Sale
2024-09-30 13G Identiv, Inc.
INVE
Portolan Capital Management, LLC 1,008,220
4.290%
-276,155decrease
(-21.50%)
Filing
History
2024-11-06
3:05 pm
Purchase
2024-10-30 13G Sportsman's Warehouse Holdings, Inc.
SPWH
Portolan Capital Management, LLC 1,972,359
5.210%
1,972,359increase
(New Position)
Filing
History
2024-07-22
2:33 pm
Purchase
2024-07-10 13G Orion Group Holdings, Inc.
ORN
Portolan Capital Management, LLC 1,806,575
5.500%
1,806,575increase
(New Position)
Filing
History
2024-06-27
2:46 pm
Purchase
2024-06-17 13G Quanterix Corporation
QTRX
Portolan Capital Management, LLC 1,918,030
5.010%
1,918,030increase
(New Position)
Filing
History
2024-03-14
2:30 pm
Purchase
2024-03-06 13G Identiv, Inc.
INVE
Portolan Capital Management, LLC 1,284,375
5.540%
376,907increase
(+41.53%)
Filing
History
2024-02-14
12:12 pm
Sale
2023-12-31 13G Kura Sushi USA, Inc.
KRUS
Portolan Capital Management, LLC 74,917
0.740%
-395,090decrease
(-84.06%)
Filing
History
2024-02-14
11:27 am
Sale
2023-12-31 13G Identiv, Inc.
INVE
Portolan Capital Management, LLC 907,468
3.920%
-1,218,743decrease
(-57.32%)
Filing
History
2024-02-14
11:24 am
Sale
2023-12-31 13G Porch Group, Inc.
PRCH
Portolan Capital Management, LLC 3,200,183
3.240%
-3,140,915decrease
(-49.53%)
Filing
History
2024-02-14
11:20 am
Purchase
2023-12-31 13G The Honest Company, Inc.
HNST
Portolan Capital Management, LLC 7,556,985
7.920%
2,359,264increase
(+45.39%)
Filing
History
2024-02-14
11:16 am
Sale
2023-12-31 13G EMCORE Corporation
EMKR
Portolan Capital Management, LLC 0
0.000%
-311,334decrease
(Position Closed)
Filing
History
2024-02-14
10:50 am
Sale
2023-12-31 13G Bel Fuse Inc.
BELFB
Portolan Capital Management, LLC 190,512
1.790%
-341,065decrease
(-64.16%)
Filing
History
2023-12-18
2:29 pm
Purchase
2023-12-07 13G GEN Restaurant Group, Inc.
GENK
Portolan Capital Management, LLC 275,618
6.660%
275,618increase
(New Position)
Filing
History
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