CVM Insider Trading — Formulário 358 (2010–2025)

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🇺🇸 English

The Brazilian equivalent of the SEC Form 4 — now available as an API. Every stock transaction by directors, board members and controlling shareholders of publicly traded Brazilian companies must be reported monthly to the CVM (Brazil's SEC) via Formulário 358. This is legally disclosed insider trading data — and one of the most valuable signals in the Brazilian market.

What you get

• Every buy and sell by directors, CFOs, CEOs, board members and controlling shareholders
• Declared quantity, average price and total transaction value
• Post-transaction balance (how much they still hold)
• Signal score weighted by role (CEO counts more than a board member)
• Sector and B3 listing segment for each company
• Direct link to the original CVM document

Query modes

recent — Latest transactions

{ "mode": "recent", "days": 30, "operation_type": "all" }

empresa — By company

{ "mode": "empresa", "ticker": "PETR4" }

{ "mode": "empresa", "empresa": "Vale", "operation_type": "sell" }

insider — By person

{ "mode": "insider", "insider": "Jean Paul Prates" }

alerts — Large transactions

{ "mode": "alerts", "days": 30, "min_value_brl": 5000000 }

ranking — Top buyers, sellers or most active

{ "mode": "ranking", "tipo_ranking": "maiores_compradores", "days": 90, "top_n": 20 }

estatisticas — Summary

{ "mode": "estatisticas", "days": 30, "ticker": "VALE3" }

Signal score

Each transaction gets a signal score weighted by the insider's role:

Role	Multiplier
CEO / President	2.0×
CFO / Financial Director	1.8×
Director	1.5×
Controlling shareholder	1.3×
Board member	1.2×

Labels: strong_buy · buy · neutral · sell · strong_sell

Why this matters

In the US, SEC Form 4 filings are monitored in real time by quant funds. Academic studies show insider transactions predict abnormal returns of 5–15% over the following 6 months. Brazil has the same data — until now without an API.

Target audience: fund managers, buy-side analysts, wealth management fintechs, quant traders.

Data source

Official public data from:

• Portal de Dados Abertos CVM
• Portal RAD/ENET CVM

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🇧🇷 Português

O equivalente brasileiro do SEC Form 4 — agora com API. Toda compra e venda de ações por diretores, conselheiros e controladores de companhias abertas deve ser declarada mensalmente à CVM no Formulário 358. São dados públicos de insider trading legal — e um dos sinais mais valiosos do mercado brasileiro.

O que você recebe

• Todas as compras e vendas de diretores, CFOs, CEOs, conselheiros e controladores
• Quantidade, preço médio e valor total de cada operação
• Saldo pós-operação (quanto o insider ainda detém)
• Signal score ponderado pelo cargo
• Setor e segmento de listagem B3 de cada empresa
• Link direto para o documento original na CVM

Modos de consulta

recent — Negociações recentes

{ "mode": "recent", "days": 30, "operation_type": "buy" }

empresa — Por empresa

{ "mode": "empresa", "ticker": "VALE3" }

insider — Por pessoa

{ "mode": "insider", "insider": "Gustavo Pimenta" }

alerts — Grandes negociações

{ "mode": "alerts", "days": 30, "min_value_brl": 1000000 }

ranking — Rankings

{ "mode": "ranking", "tipo_ranking": "maiores_vendedores", "days": 90, "top_n": 10 }

estatisticas — Resumo

{ "mode": "estatisticas", "days": 30 }

Fonte dos dados

Dados 100% públicos da CVM, conforme Lei de Acesso à Informação:

• Portal de Dados Abertos CVM
• Portal RAD/ENET CVM

by Jenko Systems