# Nstar Electric Co: overview NSARO · OTC · CIK 13372 · [Utilities](/sectors/utilities.md) · fiscal year ends Dec 31 Pages: [Overview](/companies/nsaro.md) · [Financials](/companies/nsaro/financials.md) · [Filings](/companies/nsaro/filings.md) · [Insiders](/companies/nsaro/insiders.md) Revenue is not reported in this company’s XBRL financial statements. ## Last eight quarters | Line item | Unit | period not labelled (2010-06-30) | period not labelled (2010-09-30) | period not labelled (2010-12-31) | period not labelled (2011-03-31) | Q2 FY2011 (2011-06-30) | Q3 FY2011 (2011-09-30) | Q4 FY2011 (2011-12-31) | Q1 FY2012 (2012-03-31) | | --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | not reported | not reported | not reported | not reported | not reported | not reported | not reported | not reported | | Gross margin | % | not reported | not reported | not reported | not reported | not reported | not reported | not reported | not reported | | Operating margin | % | not reported | not reported | not reported | not reported | not reported | not reported | not reported | not reported | | Net margin | % | not reported | not reported | not reported | not reported | not reported | not reported | not reported | not reported | | Diluted EPS | $ per share | not reported | not reported | not reported | not reported | not reported | not reported | not reported | not reported | | Free cash flow | $m | not reported | [152 d](/filings/0001193125-11-299941.md) | [86.0 d](/filings/0001193125-12-043962.md) | [(24.9)](/filings/0001193125-12-222586.md) | [229 d](/filings/0001193125-11-216177.md) | [147 d](/filings/0001193125-11-299941.md) | [(10.3) d](/filings/0001193125-12-043962.md) | [5.1](/filings/0001193125-12-222586.md) | - Revenue. XBRL not reported. - Gross margin (gross profit / revenue). XBRL not reported. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss. Derived values: 12-month figure less the 9-month figure. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss. Derived values: 12-month figure less the 9-month figure. - Diluted EPS. XBRL not reported. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Derived values: 9-month figure less the 6-month figure; 12-month figure less the 9-month figure; 6-month figure less the 3-month figure. ## Last five fiscal years | Line item | Unit | FY (2009-12-31) | FY (2010-12-31) | FY2011 (2011-12-31) | | --- | --- | ---: | ---: | ---: | | Revenue | $m | not reported | not reported | not reported | | Gross margin | % | not reported | not reported | not reported | | Operating margin | % | not reported | not reported | not reported | | Net margin | % | not reported | not reported | not reported | | Diluted EPS | $ per share | not reported | not reported | not reported | | Free cash flow | $m | [204](/filings/0001193125-12-043962.md) | [247](/filings/0001193125-12-043962.md) | [340](/filings/0001193125-12-043962.md) | - Revenue. XBRL not reported. - Gross margin (gross profit / revenue). XBRL not reported. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss. - Diluted EPS. XBRL not reported. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 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/nsaro/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) None of the funds in coverage reports a position in its latest 13F. ## Recent filings [All 265 filings](/companies/nsaro/filings.md) | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-08-03 | 16:34 ET | [10-Q](/filings/0001628280-26-051906.md) | Quarterly report, period 2026-06-30 | 0001628280-26-051906 | | 2026-07-30 | 16:18 ET | [8-K](/filings/0001104659-26-088698.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-088698 | | 2026-05-13 | 16:10 ET | [8-K](/filings/0001104659-26-060236.md) | 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001104659-26-060236 | | 2026-05-07 | 16:56 ET | [10-Q](/filings/0001628280-26-032278.md) | Quarterly report, period 2026-03-31 | 0001628280-26-032278 | | 2026-05-06 | 16:20 ET | [8-K](/filings/0001104659-26-056267.md) | 2.02 Results of operations; 5.07 Shareholder vote results; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-056267 | | 2026-03-31 | 17:20 ET | [8-K](/filings/0001104659-26-037912.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-26-037912 | | 2026-02-17 | 14:10 ET | [10-K](/filings/0001628280-26-008461.md) | Annual report, period 2025-12-31 | 0001628280-26-008461 | | 2026-02-12 | 16:21 ET | [8-K](/filings/0001104659-26-014302.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-014302 | | 2026-01-30 | 16:15 ET | [8-K](/filings/0001104659-26-008649.md) | 5.05 Item not in the standard list; 9.01 Financial statements and exhibits | 0001104659-26-008649 | | 2025-11-06 | 13:47 ET | [10-Q](/filings/0001628280-25-050033.md) | Quarterly report, period 2025-09-30 | 0001628280-25-050033 | ## Latest annual report [Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001628280-26-008461.md), filed Feb 17, 2026. ## Forecast league Not in this season’s league. [This season’s league](/leagues.md) ## About the filer - CIK: 13372 - Tickers: NSARO, NSARP - Exchange: OTC - SIC code: 4911 Electric Services - State of incorporation: MA - Filer category: not reported Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:17 ET. No prices; not investment advice.