# Energy Co of Minas Gerais: overview CIG · NYSE · CIK 1157557 · [Utilities](/sectors/utilities.md) · fiscal year ends Dec 31 Pages: [Overview](/companies/cig.md) · [Financials](/companies/cig/financials.md) · [Filings](/companies/cig/filings.md) · [Insiders](/companies/cig/insiders.md) Revenue is not reported in this company’s XBRL financial statements. ## Last eight quarters Not reported. ## Last five fiscal years | Line item | Unit | FY (2020-12-31) | FY2021 (2021-12-31) | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | | --- | --- | ---: | ---: | ---: | ---: | ---: | | Revenue | $bn | [25.2](/filings/0001292814-23-003241.md) | [33.6](/filings/0000950170-24-050630.md) | [34.5](/filings/0001554855-25-000408.md) | [36.9](/filings/0001554855-25-000408.md) | [39.8](/filings/0001554855-25-000408.md) | | Gross margin | % | [21.3%](/filings/0001292814-23-003241.md) | [20.0%](/filings/0000950170-24-050630.md) | [19.8%](/filings/0001554855-25-000408.md) | [22.8%](/filings/0001554855-25-000408.md) | [20.5%](/filings/0001554855-25-000408.md) | | Operating margin | % | not reported | not reported | not reported | not reported | not reported | | Net margin | % | [11.4%](/filings/0001292814-23-003241.md) | [11.1%](/filings/0000950170-24-050630.md) | [11.9%](/filings/0001554855-25-000408.md) | [15.6%](/filings/0001554855-25-000408.md) | [17.9%](/filings/0001554855-25-000408.md) | | Diluted EPS | $ per share | not reported | not reported | not reported | not reported | not reported | | Free cash flow | $bn | [8.5](/filings/0001292814-23-003241.md) | [3.5](/filings/0000950170-24-050630.md) | [6.4](/filings/0001554855-25-000408.md) | [5.6](/filings/0001554855-25-000408.md) | [4.8](/filings/0001554855-25-000408.md) | - Revenue. XBRL Revenue: ifrs-full:Revenue. - Gross margin (gross profit / revenue). XBRL Gross profit: ifrs-full:GrossProfit; Revenue: ifrs-full:Revenue. - Operating margin (operating income / revenue). XBRL Revenue: ifrs-full:Revenue. - Net margin (net income / revenue). XBRL Net income: ifrs-full:ProfitLossAttributableToOwnersOfParent; Revenue: ifrs-full:Revenue. - Diluted EPS. XBRL not reported. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: ifrs-full:CashFlowsFromUsedInOperatingActivities; Capital expenditure: ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities. Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing. ## Insider purchases and sales The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/cig/insiders.md) None in coverage. ## Funds that report holding it From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md) | Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before | | --- | --- | ---: | ---: | --- | --- | | [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $47.9m | 22,809,540 | | Added +1,807,360 | | [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $38.2m | 16,652,123 | | Added +2,007,761 | | [GOLDMAN SACHS GROUP INC](/funds/886982.md) | 2026-06-30 | $25.2m | 11,998,815 | | Added +3,980,691 | | [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $22.1m | 10,517,426 | | Unchanged | | [TSP Capital Management Group, LLC](/funds/1317208.md) | 2026-06-30 | $19.2m | 9,123,551 | | New +9,123,551 | | [AMERICAN CENTURY COMPANIES INC](/funds/748054.md) | 2026-06-30 | $14.4m | 6,856,051 | | Added +589,337 | | [RENAISSANCE TECHNOLOGIES LLC](/funds/1037389.md) | 2026-06-30 | $11.4m | 5,450,778 | | Reduced −2,543,071 | | [MORGAN STANLEY](/funds/895421.md) | 2026-06-30 | $10.7m | 5,118,233 | | Added +983,754 | | [Crossmark Global Holdings, Inc.](/funds/1539204.md) | 2026-06-30 | $8.5m | 4,027,980 | | Reduced −8,674 | | [MANGROVE PARTNERS IM, LLC](/funds/1535392.md) | 2026-06-30 | $5.5m | 2,625,000 | | Unchanged | ## Recent filings [All 245 filings](/companies/cig/filings.md) | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-09-09 | 12:57 ET | [6-K](/filings/0001292814-26-004500.md) | Report of a foreign private issuer, period 2026-09-30 | 0001292814-26-004500 | | 2026-06-09 | 10:09 ET | [6-K](/filings/0001292814-26-003375.md) | Report of a foreign private issuer, period 2026-06-30 | 0001292814-26-003375 | | 2026-04-24 | 16:51 ET | [6-K](/filings/0001292814-26-002503.md) | Report of a foreign private issuer, period 2026-06-30 | 0001292814-26-002503 | | 2026-04-17 | 19:49 ET | [20-F](/filings/0001554855-26-000648.md) | Annual report of a foreign private issuer, period 2025-12-31 | 0001554855-26-000648 | | 2026-03-27 | 23:02 ET | [6-K](/filings/0001292814-26-001797.md) | Report of a foreign private issuer, period 2026-03-31 | 0001292814-26-001797 | | 2026-01-20 | 21:56 ET | [6-K](/filings/0001292814-26-000144.md) | Report of a foreign private issuer, period 2026-03-31 | 0001292814-26-000144 | | 2025-10-27 | 15:48 ET | [6-K](/filings/0001292814-25-003633.md) | Report of a foreign private issuer, period 2025-12-31 | 0001292814-25-003633 | | 2025-07-30 | 20:48 ET | [6-K](/filings/0001292814-25-002781.md) | Report of a foreign private issuer, period 2025-09-30 | 0001292814-25-002781 | | 2025-05-16 | 14:09 ET | [6-K](/filings/0001292814-25-002121.md) | Report of a foreign private issuer, period 2025-06-30 | 0001292814-25-002121 | | 2025-05-01 | 21:48 ET | [20-F](/filings/0001554855-25-000408.md) | Annual report of a foreign private issuer, period 2024-12-31 | 0001554855-25-000408 | ## Latest annual report [Form 20-F for the fiscal year ended Dec 31, 2025](/filings/0001554855-26-000648.md), filed Apr 17, 2026. ## Forecast league Not in this season’s league. [This season’s league](/leagues.md) ## About the filer - CIK: 1157557 - Tickers: CIG, CIG-C - Exchange: NYSE - SIC code: 4911 Electric Services - State of incorporation: not reported - Filer category: Large accelerated filer Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:34 ET. No prices; not investment advice.