You are reading the report for 2026-08-14. The figures are as they stood that day and are not revised. See the current report →
Daily Special Report
Published Aug 15
The Cluster Watch List
Where insiders are buying their own stock
4 companiesCovering Aug 11 – Aug 14Data through Aug 14
ATTO is the strongest cluster here: 2 separate insiders bought across 4 filings, rather than one insider buying repeatedly. The purchases were disclosed between Aug 11 and Aug 14. The quoted moves use the Aug 14 close vs the prior close.
Entry by entry — why each one is on the board
ATTOAttovia Therapeutics, Inc.
Insiders2
Bought$20.6m
Session+3.5%
ATTO has 2 separate insiders across 4 filings, with $20.6m bought; that is the biggest number of insiders buying of the 4 here. Its Aug 14 close was +3.5% versus the prior close, the third-largest move on the session of the 4 here.
2 separate insiders, 4 filings, latest buy Aug 6
MTDRMatador Resources Company
Insiders2
Bought$1.0m
Session+4.1%
By contrast, MTDR has 2 separate insiders across 5 filings and $1.0m bought, the smallest amount bought of the 4 here. Its Aug 14 close was +4.1% versus the prior close, the biggest move on the session of the 4 here.
2 separate insiders, 5 filings, latest buy Aug 13
ABCLAbCellera Biologics Inc.
Insiders2
Bought$865k
Session+3.7%
At ABCL, 2 separate insiders account for 2 filings and $865k bought, sharing its number of insiders buying (2) with ATTO and MTDR. Its Aug 14 close was +3.7% versus the prior close, the second-largest move on the session of the 4 here.
2 separate insiders, 2 filings, latest buy Aug 14
RSGRepublic Services, Inc.
Insiders1
Bought$186.5m
Session-0.2%
Repeated buying at RSG came from 1 insider across 14 filings, not a cluster; it is the only one here whose number of insiders buying is 1. The $186.5m bought is the second-largest amount bought of the 4 here, while its Aug 14 close was -0.2% versus the prior close, the smallest move on the session of the 4 here.
One insider buying repeatedly - 14 filings, not a cluster
How this board was built
Open-market Form 4 purchases disclosed between Aug 11 and Aug 14. “Session” is the Aug 14 close vs the prior close. Insider buying is not a recommendation.