Live Insider Tracker — SEC Form 4 Clusters & Large Purchases
15 insider purchases ≥ $100k filed in the last 90 days · $48.4M total. Cluster detection runs market-wide; regime context and 13F overlay apply to 212 actively-monitored tickers. Source: SEC EDGAR.
$100k+ Insider Purchases · Last 90 Days15 of latest
Open-market purchases (transaction code P) sized at $100k or above, sorted by date and value. Excludes 10b5-1 plan sales, option exercises, and stock awards.
C-Suite Cluster Buys · 3+ Insiders Including Chief Officers8 active
Clusters where at least one CEO, CFO, COO, President, Chairman, or General Counsel participated. C-suite seniority indicates direct operational visibility — academic research (Cohen, Malloy & Pomorski, 2012) finds C-suite buys outperform director buys by a wide margin.
Multi-Insider Convergence · 5+ Unique Buyers6 active
High-conviction clusters where five or more independent insiders converged on open-market buys within the same window. These are rare events — typically 3–8 per month across the full public-company universe — and carry the strongest predictive weight in the academic literature.
Insider + 13F Whale Confluence · Multi-Layer Conviction0 setups
Tickers where (1) insiders formed a buy cluster recently, (2) 13F-tracked institutional whales (Berkshire, Bridgewater, Burry, Ackman and 11 others) accumulated last quarter, and (3) the technical regime is supportive (CLEARANCE, OBSERVATION, or ELEVATED). Available for the 212 actively-monitored MarketTriage tickers.Latest 13F quarter: 2026-Q1
No confluence setups in the current window. This is the rarest tile — high-conviction setups typically appear once or twice a quarter.
Cluster Performance Tracker · 30-Day Hindsight0 tracked
Honest performance log — every buy cluster detected in the last 30 days that we can price-track, showing return from detection to today. Performance tracking available for 212 actively-monitored tickers (cluster detection is market-wide; price tracking is not).
No price-trackable clusters in the last 30 days for the 212-asset universe.
What is a Form 4 insider cluster?
A Form 4 cluster is a SEC-recognized signal where three or more unique insiders at the same company purchase open-market shares within a short window — typically 10 days. The signal isolates discretionary capital commitment (transaction code P) from automated activity such as 10b5-1 plan sales, option exercises (M), and stock awards (A).
MarketTriage runs cluster detection daily across the full SEC EDGAR universe (~6,000 US public companies), persists every cluster regardless of market cap, and overlays additional context — regime classification, 13F whale convergence, post-detection price performance — for the 212 actively-monitored tickers in our research universe.
Why C-suite buys outweigh director buys — three reasons the seniority filter matters
Reason 1: Operational visibility differs by an order of magnitude
A CEO sees daily revenue, monthly margins, supply-chain disruptions, and customer churn cohort-by-cohort. A non-executive director sees the same quarterly board pack everyone else gets, plus committee work. When a CEO commits personal capital to open-market shares, the underlying information set is materially deeper than a director's.
Reason 2: Cohen, Malloy & Pomorski (2012) found a 7%+ alpha gap
The Decoding Inside Information paper separated insider trades into 'opportunistic' (irregular, often C-suite, contrary to recent personal pattern) and 'routine' (regular cadence, often grants and director clip purchases). Opportunistic insiders earned excess returns of ~7% per year over routine insiders. The signal lives in deviation from personal baseline, and senior officers deviate more meaningfully.
Reason 3: Director buys are often token, scheduled, or governance-mandated
Many companies require directors to hold a minimum equity stake. New directors making their first $25k purchase are often satisfying that requirement, not expressing a market view. C-suite executives have already accumulated deep equity exposure through compensation — a fresh open-market purchase by a CFO who already holds millions is a discretionary act, not a compliance one.
Frequently asked questions
What is a Form 4 insider buying cluster?
A Form 4 cluster occurs when 3 or more unique insiders purchase open-market shares of the same company within a short window — typically 10 days. MarketTriage scans SEC EDGAR daily and persists every cluster across the full US public-company universe.
Why does the $500k+ filter matter?
Insider purchases under $25,000 are often routine and noisy. The $500k threshold isolates discretionary capital commitments by senior insiders — purchases meaningful enough to signal personal financial conviction, not routine accumulation through automatic plans.
How fresh is this data?
The Form 4 scan runs once daily after US market close, pulling all SEC EDGAR filings from the prior trading day. New filings typically appear within 24 hours of the SEC accepting them. Live page reads cache for 5 minutes to keep latency low.
Why are some tickers shown without regime context?
MarketTriage runs full regime classification, 13F whale tracking, and price performance only for 212 actively-monitored tickers. Cluster detection is market-wide — for tickers outside the 212 universe, we display the cluster but cannot show regime overlay or post-detection price tracking.
What is the difference between a cluster and a single large purchase?
A cluster requires 3+ unique insiders converging on the same direction. A single $5M CEO purchase is significant but reflects one decision-maker. Clusters reflect independent agreement across multiple executives, which academic research finds more predictive than solo trades.
Are sell-side clusters reliable signals?
Sell clusters are noisier than buy clusters — diversification, tax management, and pre-scheduled 10b5-1 plans all produce sales that carry no directional information. Only sales coded P or S (open market) are tracked here. Use sell clusters as one input, not a standalone signal.
How does this compare to OpenInsider?
OpenInsider provides comprehensive raw filing data. MarketTriage adds cluster algorithm output, C-suite seniority weighting, regime context for tracked tickers, and 13F whale convergence overlay — turning raw filings into multi-signal conviction context.
Where does the underlying data come from?
All filings are sourced directly from SEC EDGAR through the EFTS search API and individual Form 4 XML documents. MarketTriage adds no editorial interpretation to the source data — only structured aggregation, cluster detection, and seniority classification.
Related guides
Source: SEC EDGAR (efts.sec.gov, data.sec.gov). All Form 4 transactions shown are public regulatory filings. MarketTriage adds aggregation, cluster detection, and seniority classification — no editorial interpretation of the source data. Educational context only; not investment advice. Patterns do not guarantee future returns.