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National Grid plc (NGG)

National Grid plc at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

National Grid plc (NGG) is a Regulated Electric company based in GB with a market capitalization of $80.9B. Revenue declined 2.2% year-over-year and free cash flow was negative at -$5.1B. This page tracks NGG's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

GB · 31.43K employees · IPO Aug 10, 2005

Valuation

Valuation & price

$80.64 · as of May 17, 2026 · -14.1% vs 52w high

24.3

P/E ratio

Latest-FY diluted EPS

2.06

P/B ratio

Market cap ÷ book equity

—

Dividend yield

Price — last 12 months

$93.88$81.22$68.57Jul 25Dec 25Jul 26Jul 7, 25$70.94Jul 9, 25$70.85Jul 11, 25$70.19Jul 15, 25$71.00Jul 17, 25$71.17Jul 21, 25$72.53Jul 23, 25$72.65Jul 25, 25$72.15Jul 29, 25$70.52Jul 31, 25$70.39Aug 4, 25$72.65Aug 6, 25$72.30Aug 11, 25$71.23Aug 13, 25$70.53Aug 15, 25$71.43Aug 19, 25$70.98Aug 21, 25$71.43Aug 25, 25$70.49Aug 27, 25$71.73Aug 29, 25$70.57Sep 3, 25$68.57Sep 5, 25$70.10Sep 9, 25$70.36Sep 11, 25$71.07Sep 16, 25$70.88Sep 18, 25$69.99Sep 22, 25$70.96Sep 24, 25$71.15Sep 26, 25$71.55Sep 30, 25$72.67Oct 2, 25$72.53Oct 6, 25$73.90Oct 8, 25$73.61Oct 10, 25$74.52Oct 14, 25$74.25Oct 16, 25$75.90Oct 21, 25$76.39Oct 23, 25$76.70Oct 27, 25$77.17Oct 29, 25$75.55Oct 31, 25$75.25Nov 4, 25$75.14Nov 6, 25$76.29Nov 10, 25$77.33Nov 12, 25$78.03Nov 14, 25$77.38Nov 18, 25$77.53Nov 20, 25$75.83Nov 25, 25$74.07Nov 28, 25$76.11Dec 2, 25$75.64Dec 4, 25$75.91Dec 8, 25$75.33Dec 10, 25$74.64Dec 12, 25$74.93Dec 16, 25$75.77Dec 18, 25$76.39Dec 22, 25$76.41Dec 24, 25$77.49Dec 29, 25$77.45Jan 2, 26$78.70Jan 6, 26$79.59Jan 8, 26$79.48Jan 12, 26$79.76Jan 14, 26$78.88Jan 16, 26$80.89Jan 21, 26$80.85Jan 23, 26$81.50Jan 27, 26$84.31Jan 29, 26$85.07Feb 2, 26$84.61Feb 4, 26$87.79Feb 9, 26$88.39Feb 11, 26$90.64Feb 13, 26$92.40Feb 18, 26$90.81Feb 20, 26$90.28Feb 24, 26$92.38Feb 26, 26$93.72Mar 2, 26$93.88Mar 4, 26$90.43Mar 6, 26$89.86Mar 10, 26$89.85Mar 12, 26$90.81Mar 17, 26$90.42Mar 19, 26$85.53Mar 23, 26$82.06Mar 25, 26$84.29Mar 27, 26$81.92Mar 31, 26$84.60Apr 2, 26$87.99Apr 7, 26$87.52Apr 9, 26$90.32Apr 13, 26$88.95Apr 15, 26$87.86Apr 17, 26$86.92Apr 22, 26$85.60Apr 24, 26$87.42Apr 28, 26$87.45Apr 30, 26$89.54May 4, 26$87.50May 6, 26$87.85May 8, 26$86.89May 12, 26$87.24May 14, 26$87.43May 18, 26$83.84May 20, 26$84.72May 22, 26$86.61May 28, 26$84.86Jun 1, 26$80.00Jun 3, 26$80.23Jun 5, 26$81.86Jun 9, 26$81.08Jun 11, 26$81.52Jun 15, 26$81.57Jun 17, 26$80.68Jun 22, 26$80.97Jun 24, 26$82.83Jun 26, 26$83.01Jul 2, 26$82.37
$67.9852-week range$93.93
Loading valuation history…

Fundamentals

Key fundamentals

$80.9B

Market cap

-2.2%

Revenue growth (YoY)

32.7%

Gross margin

-$5.1B

Free cash flow (USD)

$43.9B

Net debt

5.1%

Share dilution

3/5

Graham criteria passed

Defensive-investor screen

Utilities

Sector

Trajectory

Long-term trends

Revenue by year

2017 → 2026

FY 2017$15.0BFY 2018$15.3BFY 2019$14.9BFY 2020$13.4BFY 2021$18.4BFY 2022$18.4BFY 2023$21.7BFY 2024$19.9BFY 2025$18.4BFY 2026$18.0B
$15B$18B

Free cash flow by year

2017 → 2026

FY 2017$1.3BFY 2018$10.4MFY 2019$-95.2MFY 2020$-795.6MFY 2021$-382.7MFY 2022$340.3MFY 2023$-585.9MFY 2024$-1.3BFY 2025$-3.4BFY 2026$-3.8B
$1.3B-$3.8B

Gross margin by year

2022 → 2026

FY 202267.0%FY 202360.2%FY 202473.4%FY 202577.4%FY 202632.7%
67.0%32.7%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

0

Insider buys · 90 days

0

Insider sells · 90 days

Earnings

Last reported: May 14, 2026 (EPS $3.56)

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • 6-K filingInvestment AnnouncementJul 1, 2026Filing
  • 6-K filingVoting Rights UpdateJun 30, 2026Filing
  • 6-K filingDebt Securities OfferingJun 9, 2026Filing
  • 6-K filingScrip Dividend AnnouncedJun 4, 2026Filing
  • Annual reportAnnual Report FiledJun 3, 2026Filing
  • 6-K filingBoard ChangeJun 3, 2026Filing
  • Annual report20-F FiledJun 3, 2026Filing
  • 6-K filingVoting Rights UpdateMay 29, 2026Filing
  • Annual reportAnnual Report FiledMay 14, 2026Filing
  • 6-K filingVoting Rights UpdateApr 30, 2026Filing

Questions

Frequently asked questions

What is National Grid plc's market cap?

National Grid plc (NGG) has a market capitalization of $80.9B.

What is NGG's P/E ratio?

NGG trades at a price-to-earnings ratio of 24.3, based on its latest fiscal-year diluted earnings per share and the most recent cached price.

What is NGG's price-to-book (P/B) ratio?

NGG trades at 2.06 times book value per share.

When did National Grid plc last report earnings?

NGG last reported earnings on May 14, 2026; the next date is not yet scheduled.

Are insiders buying NGG stock?

SEC Form 4 filings show no open-market insider buys at National Grid plc in the last 90 days (0 sells).

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Timeline

Every filing, insider trade & earnings on a price-anchored timeline

Filing Analyzer

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News

Latest press coverage in one feed

Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.