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.

Open-market dollars bought, with the session moveDOLLARS BOUGHT · SESSION MOVEATTO$20.6m+3.5%MTDR$1.0m+4.1%ABCL$865k+3.7%RSG$186.5m-0.2%

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.