mikhailmakeev/sec-form4-insider-trading

SEC Form 4 Insider Trading: Transactions and Scored Events

Insider trades of US public-company officers, directors, and 10% owners, parsed from SEC EDGAR Form 4 filings by AlphAI within minutes of each filing. Two granularities:

• insider_transactions.csv: 36,903 rows, one per non-derivative transaction tranche, exactly as filed.
• insider_events.csv: 16,113 rows. Tranches are grouped into economic events (one filing's transactions grouped by transaction code and ownership form, so a 10b5-1 ladder sale is one event, not 25 rows), with a value-weighted average price and a deterministic 1-10 relevance score computed from the event's summed value.

Coverage: 15,532 filings from 3,075 issuers, filed May 12 to August 31, 2026 (UTC). May is thinner than the later months. Prices pass an anchor-based plausibility check at ingest, and known filer price errors are repaired retroactively. Current filings are available through the AlphAI API.

Columns

insider_transactions.csv

Column	Type	Notes
ticker	str	Issuer ticker at filing time
cik	int	SEC issuer CIK
issuer_name	str	As filed
insider_name, insider_title	str	As filed
is_officer, is_director, is_ten_percent_owner	bool	Reporting-person role flags
transaction_code	str	P purchase, S sale, D disposition to the issuer
ownership_form	str	D direct, I indirect
transaction_date	date	As filed
shares	decimal
price_per_share	decimal	Empty when the filing prices no tranche
total_value	decimal	shares × price_per_share, as filed (see caveats)
security_title	str	e.g. Common Stock
shares_owned_after	decimal	Post-transaction holdings
is_10b5_1	bool	Pre-planned Rule 10b5-1 trade
accession_number	str	EDGAR accession id
transaction_index	int	Tranche order inside the filing
filed_at	timestamp	When the filing hit EDGAR (UTC)
news_uid	str	AlphAI article id for the event (see Links)

Booleans are written as true / false. The key is (accession_number, transaction_index).

insider_events.csv

Grouped by (accession_number, transaction_code, ownership_form). Adds: insiders (distinct names), any_officer / any_director / any_ten_percent_owner / any_10b5_1, summed shares and total_value, avg_price_usd (value-weighted over priced tranches), tranches count, first and last transaction dates, and relevance_score (1-10, deterministic from the event's summed value; it is the score AlphAI serves on its feed).

Known caveats (read before aggregating)

• Values are as filed. A few foreign issuers file in the listing currency (for example Taiwanese issuers in NT$), which inflates apparent USD values. No FX normalization is applied.
• Events above $1B are almost never open-market trades. They are M&A or tender dispositions, IPO or secondary sales by large holders, or filer errors. Filter them before computing buy/sell aggregates.
• Co-filed blocks. When a fund holds the shares, each affiliated beneficial owner files their own Form 4 for the same trade, so one block can appear in two or three filings with identical shares and price. Summing total_value across filings counts it more than once.
• 10b5-1 sells are pre-planned liquidity, not a current view on the stock. Split them out of any "insiders are selling" reading.
• Buys by 10%-owner entities (funds, LLCs: any_ten_percent_owner without officer or director) are usually placements or financing rounds, not conviction buys by a person.
• Prices are not split-adjusted. Compare prices across dates only after adjusting for splits. Filers of illiquid OTC stocks occasionally report prices far from the market.
• A few late filings report transactions from 2024 or earlier (31 tranches).

Links

• Live feed and API: alphai.io/developers (free tier, no card)
• Research snapshots built from this data: alphai.io/research
• Resolve news_uid to a full article: GET https://api.alphai.io/api/news/{news_uid}/ (free API key)
• Raw source: SEC EDGAR

Version history

• v2 (2026-09-29). Window extended to August 31, 2026: 36,903 tranches and 16,113 events. Booleans changed from t/f to true/false. Every v1 row is still present. Ladder filings from May and June that had one article per tranche are now one event each, so news_uid changed for 3,044 of those tranches. Six v1 tranches failed a later price check; their price or value is now corrected or left empty.
• v1 (2026-07-29). May 12 to July 29, 2026: 20,832 tranches and 8,538 events.

License and citation

CC BY 4.0. Please credit AlphAI and link to alphai.io, e.g.:

Insider trading data: AlphAI (alphai.io), parsed from SEC EDGAR Form 4 filings, CC BY 4.0.