Portolan Capital Management, LLC: SG position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Portolan Capital Management, LLC on SG, newest first. How the timeline and the estimate are built.
Portolan Capital Management, LLC held 1,029,016 SG shares at 2026-06-30 per its 13F-HR filed 2026-08-14.
the latest 13F is the newest step
- period ended2026-06-3013F 1,029,016 sharesChange vs previous 13F +1,029,016 shares
0.34% of the 13F portfolio, value $9,065,631.
13F-HR 0001104659-26-096980 filed by Portolan Capital Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2026-03-3113F 0 sharesChange vs previous 13F -848,085 shares
13F-HR 0001104659-26-062488 filed by Portolan Capital Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
Exited: the 13F for this period no longer lists the position.
- period ended2025-12-3113F 848,085 sharesChange vs previous 13F +529,938 shares
0.31% of the 13F portfolio, value $5,733,055.
13F-HR 0001104659-26-016304 filed by Portolan Capital Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-09-3013F 318,147 sharesChange vs previous 13F -198,262 shares
0.14% of the 13F portfolio, value $2,538,813.
13F-HR 0001104659-25-111284 filed by Portolan Capital Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-06-3013F 516,409 sharesChange vs previous 13F +76,559 shares
0.48% of the 13F portfolio, value $7,684,166.
13F-HR 0001104659-25-077571 filed by Portolan Capital Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-03-3113F 439,850 sharesChange vs previous 13F +132,849 shares
0.84% of the 13F portfolio, value $11,005,047.
13F-HR 0001104659-25-049320 filed by Portolan Capital Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2024-12-3113F 307,001 sharesChange vs previous 13F -248,568 shares
0.66% of the 13F portfolio, value $9,842,452.
13F-HR 0001104659-25-012988 filed by Portolan Capital Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2024-09-3013F 555,569 sharesChange vs previous 13F not available
1.43% of the 13F portfolio, value $19,694,921.
13F-HR 0001104659-24-118686 filed by Portolan Capital Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).