LIVE · SEC EDGAR Form 4 feed

Know what insiders know,
in one API call.

SEC Form 4 insider buy/sell data as clean JSON, refreshed every 6 hours — with cluster-buy detection and a conviction score no other feed offers at this price.

api.nexusform4.com — cluster-buys
LIVE
$ curl \
  GET /signals/cluster-buys
  ?days=7
  &min_insiders=3
$
{
  "ticker": "NVDA",
  "insiders_buying": 4,
  "total_value_usd": 2840000,
  "conviction_score": 22.85,
  "avg_price_paid": 118.42,
  "window_days": 7
}
200 OK · 84mslast refresh 02:14 UTC
NVDA+4 insiders$2.84Mconviction 22.85|MU+3 insiders$1.12Mconviction 18.40|SPCX+5 insiders$980Kconviction 17.02|AAPL+3 insiders$4.10Mconviction 24.61|RKLB+6 insiders$3.20Mconviction 26.94|PLTR+3 insiders$740Kconviction 14.88|AMD+4 insiders$1.90Mconviction 19.72|SHOP+3 insiders$1.05Mconviction 16.10|TSM+5 insiders$2.44Mconviction 21.30|CRWD+3 insiders$860Kconviction 15.55|NVDA+4 insiders$2.84Mconviction 22.85|MU+3 insiders$1.12Mconviction 18.40|SPCX+5 insiders$980Kconviction 17.02|AAPL+3 insiders$4.10Mconviction 24.61|RKLB+6 insiders$3.20Mconviction 26.94|PLTR+3 insiders$740Kconviction 14.88|AMD+4 insiders$1.90Mconviction 19.72|SHOP+3 insiders$1.05Mconviction 16.10|TSM+5 insiders$2.44Mconviction 21.30|CRWD+3 insiders$860Kconviction 15.55|
// why this feed

Signal, not noise.

Most insider feeds hand you a raw filings dump. We ship the derived signals institutions actually trade on.

Cluster-Buy Detection

Flags tickers where 3+ distinct insiders bought in the same window — the single strongest historical insider signal.

Conviction Score

One sortable number combining insider count and dollar conviction. Rank signal strength programmatically instead of eyeballing tables.

C-Suite Conviction Feed

A pure stream of only CEO/CFO/COO open-market buys — filtered from noise like routine director or 10%-owner filings.

Updated 2× Daily

Nexus Engine ingests directly from SEC Form 4s — not scraped from a third-party aggregator with lag.

// built for

Two audiences, one endpoint.

rank_signals.pypython 3.12
# rank today's cluster buys by conviction
import httpx

r = httpx.get(
"https://api.nexusform4.com/signals/cluster-buys",
params={"days": 7, "min_insiders": 3},
headers={"x-rapidapi-key": KEY},
)

top = sorted(r.json(),
key=lambda x: x["conviction_score"],
reverse=True)

print(top[:5])
TOP SIGNAL — TODAYLIVE
NASDAQ
RKLB
Rocket Lab USA, Inc.
CONVICTION
26.94
INSIDERS
6
TOTAL BUY
$3.20M
AVG PX
$18.42
CEO · P. Beck+ $1.20M
CFO · A. Gillmore+ $640K
4 directors · pooled+ $1.36M
// pricing

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