Portolan Capital Management, LLC: CLS position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Portolan Capital Management, LLC on CLS, newest first. How the timeline and the estimate are built.
Portolan Capital Management, LLC held 126,856 CLS shares at 2026-06-30 per its 13F-HR filed 2026-08-14.
the latest 13F is the newest step
- period ended2026-06-3013F 126,856 sharesChange vs previous 13F -71,007 shares
1.73% of the 13F portfolio, value $46,277,069.
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 197,863 sharesChange vs previous 13F +25,588 shares
2.97% of the 13F portfolio, value $55,734,050.
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).
- period ended2025-12-3113F 172,275 sharesChange vs previous 13F -79,281 shares
2.73% of the 13F portfolio, value $50,926,213.
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 251,556 sharesChange vs previous 13F -298,037 shares
3.35% of the 13F portfolio, value $61,978,367.
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 549,593 sharesChange vs previous 13F +156,673 shares
5.38% of the 13F portfolio, value $85,796,963.
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 392,920 sharesChange vs previous 13F -234,021 shares
2.35% of the 13F portfolio, value $30,966,025.
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 626,941 sharesChange vs previous 13F -104,005 shares
3.89% of the 13F portfolio, value $57,866,654.
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 730,946 sharesChange vs previous 13F not available
2.71% of the 13F portfolio, value $37,365,960.
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).