Cluster events

Multi-insider concentration events — 3+ distinct insiders, same direction, same trading week (Lakonishok & Lee 2001; Cohen, Malloy & Pomorski 2012). Descriptive only: these are filings that happened, not signals to act on.

Definition v0.2 · Methodology · Data as of 2026-08-28

Opportunistic: 100 cluster events — the headline count Routine: 38 windows — excluded from the headline; flagged in the academic literature as low/no signal (Cohen, Malloy & Pomorski 2012); drill in below

Direction
Routine / opportunistic
Min insiders

Routine-only windows (38) — 3+ insiders, but every transaction carries a 16b-3 compensation code

Cohen, Malloy & Pomorski (2012) find this mechanical activity carries essentially no information — it is excluded from headline cluster counts, shown here for completeness.

WeekWindowTickerDirInsidersTotal value
2026-W352026-08-25 → 2026-08-25SNDK− sell3$75.0M
2026-W352026-08-25 → 2026-08-25FTI− sell3$66.0M
2026-W352026-08-26 → 2026-08-26ALOT− sell11$39.6M
2026-W352026-08-24 → 2026-08-24FN− sell4$2.5M
2026-W352026-08-25 → 2026-08-26SCSC− sell4$2.2M
2026-W352026-08-25 → 2026-08-25NVST− sell4$674k
2026-W352026-08-24 → 2026-08-24GOSS+ buy5$191k
2026-W352026-08-24 → 2026-08-24GPRK+ buy6$144k
2026-W352026-08-26 → 2026-08-26HBNC+ buy12$113k
2026-W342026-08-20 → 2026-08-20SITM− sell7$40.6M
2026-W342026-08-20 → 2026-08-20APP− sell5$4.5M
2026-W342026-08-20 → 2026-08-20AUR− sell3$1.0M
2026-W342026-08-22 → 2026-08-22RAMP− sell5$925k
2026-W342026-08-20 → 2026-08-20TBPH− sell5$814k
2026-W342026-08-20 → 2026-08-20NIQ− sell5$804k
2026-W342026-08-20 → 2026-08-20BL− sell7$574k
2026-W342026-08-20 → 2026-08-20SOTK+ buy11$518k
2026-W342026-08-19 → 2026-08-20PAYO− sell3$330k
2026-W342026-08-19 → 2026-08-19LYTS+ buy8$175k
2026-W342026-08-20 → 2026-08-20USPH− sell4$153k
2026-W342026-08-20 → 2026-08-20MBIN+ buy7$123k
2026-W342026-08-20 → 2026-08-22OSIS− sell5$115k
2026-W342026-08-20 → 2026-08-20LAB− sell3$102k
2026-W322026-08-03 → 2026-08-03FMCB+ buy14$19.9M
2026-W282026-07-08 → 2026-07-08YSS+ buy3$77.8M
2026-W282026-07-10 → 2026-07-10LSCC− sell6$550k
2026-W282026-07-09 → 2026-07-09HTGC− sell4$496k
2026-W282026-07-10 → 2026-07-10LNT+ buy8$456k
2026-W282026-07-06 → 2026-07-09NWE+ buy6$280k
2026-W282026-07-08 → 2026-07-08DAIO+ buy4$231k
2026-W282026-07-10 → 2026-07-10VCTR+ buy9$217k
2026-W282026-07-08 → 2026-07-08LKFN+ buy7$190k
2026-W282026-07-10 → 2026-07-10WTW+ buy9$141k
2026-W282026-07-09 → 2026-07-09LOW+ buy5$133k
2026-W282026-07-08 → 2026-07-10ENVX− sell3$124k
2026-W282026-07-09 → 2026-07-09AOUT− sell4$111k
2026-W272026-07-01 → 2026-07-01LYTS+ buy5$450k
2026-W122026-03-19 → 2026-03-19fmbm+ buy7$461k