Owner Scorecard


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5019 · Idemitsu Kosan

Oil & gas Capital-intensive J-GAAP
Latest filing: FY2026 annual securities report (有価証券報告書) · EDINET

This is a quantitative scorecard. The numbers below are read directly from Idemitsu Kosan’s EDINET filing, in yen. The Japanese-language narrative, what the business does, its risks, what changed this year, is not machine-read here, so we do not paraphrase it. Find it on EDINET (code 5019) →

I

The record

What the business has done across the cycle, read straight from the EDINET filing: the multi-year record, and the walk from reported profit to the cash an owner could take out.

The record, 2017–2026

realized figures from each filing · older years to the left
2017’172018’182019’192020’202021’212022’222023’232024’242025’252026’26
Income statement
¥3.19T¥3.73T¥4.43T¥6.05T¥4.56T¥6.69T¥9.46T¥8.72T¥9.19T¥8.11TRevenueRevenue
7%12%8%9%Gross marginGross mgn
7%9%6%7%SG&A / revenueSG&A/rev
0%0%0%0%R&D / revenueR&D/rev
¥135.2B¥201.3B¥179.3B(¥3.9B)¥140.1B¥434.5B¥282.4B¥346.3B¥162.2B¥212.2BOperating incomeOp. inc.
4.2%5.4%4.1%−0.1%3.1%6.5%3.0%4.0%1.8%2.6%Operating marginOp. mgn
¥88.2B¥162.3B¥81.5B(¥22.9B)¥34.9B¥279.5B¥253.6B¥228.5B¥104.1B¥171.9BNet incomeNet inc.
Cash flow & returns
¥53.5B¥136.8B¥151.0B(¥32.7B)¥170.5B¥146.1B(¥32.8B)¥377.4B¥476.7B¥392.4BOperating cash flowOp. cash
¥70.2B¥67.9B¥61.6B¥94.9B¥98.2B¥104.8B¥104.4B¥99.2B¥95.7B¥96.0BDepreciationDeprec.
(¥104.8B)(¥93.5B)¥8.0B(¥104.7B)¥37.4B(¥238.2B)(¥390.9B)¥49.7B¥277.0B¥124.5BWorking capital & otherWC & other
¥41.5B¥58.1B¥76.3B¥118.6B¥121.1B¥94.7B¥85.6B¥70.9B¥86.6B¥154.9BCapexCapex
1.3%1.6%1.7%2.0%2.7%1.4%0.9%0.8%0.9%1.9%Capex / revenueCapex/rev
¥12.1B¥78.7B¥74.8B(¥151.4B)¥49.4B¥51.4B(¥118.4B)¥306.5B¥390.2B¥296.5BOwner earningsOwner earn.
0.4%2.1%1.7%−2.5%1.1%0.8%−1.3%3.5%4.2%3.7%Owner earnings marginOE mgn
¥12.1B¥78.7B¥74.8B(¥151.4B)¥49.4B¥51.4B(¥118.4B)¥306.5B¥390.2B¥237.6BFree cash flowFCF
0.4%2.1%1.7%−2.5%1.1%0.8%−1.3%3.5%4.2%2.9%Free cash flow marginFCF mgn
¥8.0B¥12.3B¥18.5B¥34.0B¥41.7B¥35.7B¥50.6B¥40.2B¥46.1B¥44.2BDividends paidDiv. paid
¥0¥1M¥55.9B¥13.2B¥25M¥33M¥13.1B¥57.4B¥165.3B¥2.3BBuybacksBuybacks
7%9%8%-0%5%13%7%9%5%6%ROICROIC
14%18%9%-2%3%19%16%13%7%11%Return on equityROE
13%17%7%−5%−1%17%12%10%4%8%Retained to equityRetained/eq
Balance sheet
¥90.1B¥86.8B¥90.7B¥129.3B¥131.0B¥139.0B¥103.1B¥136.9B¥164.3B¥157.1BCash & investmentsCash+inv
¥327.4B¥486.2B¥453.3B¥593.7B¥602.7B¥870.5B¥841.8B¥919.0B¥817.3B¥841.8BReceivablesReceiv.
¥430.9B¥535.6B¥586.6B¥622.9B¥694.5B¥1.06T¥1.31T¥1.38T¥1.27T¥1.38TInventoryInvent.
¥331.6B¥429.6B¥399.2B¥475.7B¥530.7B¥840.8B¥697.3B¥793.8B¥824.4B¥852.6BAccounts payablePayables
¥426.7B¥592.3B¥640.7B¥741.0B¥766.5B¥1.09T¥1.45T¥1.50T¥1.26T¥1.36TOperating working capitalOper. WC
¥959.8B¥1.21T¥1.23T¥1.55T¥1.67T¥2.37T¥2.73T¥2.92T¥2.65T¥2.97TCurrent assetsCur. assets
¥1.14T¥1.16T¥1.20T¥1.65T¥1.62T¥2.06T¥2.16T¥2.19T¥2.10T¥2.35TCurrent liabilitiesCur. liab.
0.8×1.0×1.0×0.9×1.0×1.1×1.3×1.3×1.3×1.3×Current ratioCurr. ratio
¥7.6B¥6.7B¥7.2B¥167.1B¥159.0B¥149.7B¥140.5B¥131.2B¥124.3B¥129.8BGoodwillGoodwill
¥2.64T¥2.92T¥2.89T¥3.89T¥3.95T¥4.60T¥4.87T¥5.01T¥4.78T¥5.33TTotal assetsAssets
¥1.05T¥892.0B¥949.9B¥1.30T¥1.28T¥1.34T¥1.46T¥1.30T¥1.20T¥1.36TTotal debtDebt
¥960.6B¥805.2B¥859.2B¥1.17T¥1.15T¥1.20T¥1.35T¥1.16T¥1.03T¥1.21TNet debt / (cash)Net debt
14.6×20.9×20.7×-0.3×11.7×38.8×18.5×17.1×9.7×11.7×Interest coverageInt. cov.
¥619.9B¥905.9B¥878.9B¥1.04T¥1.03T¥1.44T¥1.63T¥1.81T¥1.49T¥1.63TShareholders’ equityEquity
Per share
800M1.04B1.04B1.49B1.49B1.49B1.49B1.39B1.36B1.29BShares out (diluted)Shares
¥3987.93¥3587.20¥4254.95¥4059.47¥3059.53¥4489.81¥6349.40¥6260.91¥6767.08¥6289.75Revenue / shareRev/sh
¥110.20¥156.06¥78.32¥-15.40¥23.45¥187.67¥170.31¥164.09¥76.62¥133.40EPS (diluted)EPS
¥15.11¥75.65¥71.89¥-101.63¥33.17¥34.49¥-79.51¥220.11¥287.31¥230.04Owner earnings / shareOE/sh
¥15.11¥75.65¥71.89¥-101.63¥33.17¥34.49¥-79.51¥220.11¥287.31¥184.34Free cash flow / shareFCF/sh
¥10.00¥11.84¥17.75¥22.85¥28.00¥24.00¥33.99¥28.88¥33.97¥34.30Dividends / shareDiv/sh
¥51.82¥55.85¥73.32¥79.66¥81.29¥63.61¥57.46¥50.88¥63.73¥120.17Cap. spending / shareCapex/sh
¥774.91¥871.09¥845.13¥695.63¥690.62¥964.54¥1093.99¥1301.51¥1100.51¥1261.85Book value / shareBVPS

The diluted share count moved ×1.43 into 2020 — shares issued, not a split the totals corroborate — and the per-share figures carry the counts as filed.

Share counts before 2024 are restated ×5 for a stock split, so per-share figures sit on one basis.

Per-share growththe realized rate an owner's share compounded
9-yr5-yr
Revenue / share+5.2%/yr+15.5%/yr
Owner earnings / share+35.3%/yr+47.3%/yr
EPS+2.1%/yr+41.6%/yr
Dividends / share+14.7%/yr+4.1%/yr
Capital spending / share+9.8%/yr+8.1%/yr
Book value / share+5.6%/yr+12.8%/yr

Net income is the accountant's number; owner earnings is the cash an owner could take out. The walk between them, off the cash-flow statement, and whether the gap is widening or holding.

In fiscal 2026 the business earned ¥296.5B of owner earnings, the operating cash left after the ¥96.0B it takes just to hold its position. It put ¥58.9B more into growth; free cash flow, after that spending, was ¥237.6B.

Reported net income¥171.9B
Owner earnings¥296.5B · 4% of revenue
FY2026FY2025FY2024FY2023FY2022
Reported net income¥171.9B¥104.1B¥228.5B¥253.6B¥279.5B
Depreciation & amortizationnon-cash charge added back+¥96.0B+¥95.7B+¥99.2B+¥104.4B+¥104.8B
Working capital & othertiming of cash in and out, other non-cash items+¥124.5B+¥277.0B+¥49.7B−¥390.9B−¥238.2B
Cash from operations¥392.4B¥476.7B¥377.4B(¥32.8B)¥146.1B
Maintenance capital expenditurethe spending needed just to hold position and volume−¥96.0B−¥86.6B−¥70.9B−¥85.6B−¥94.7B
Owner earnings¥296.5B¥390.2B¥306.5B(¥118.4B)¥51.4B
Growth capital expenditurediscretionary; spent to get bigger, not to stand still−¥58.9B
Free cash flow¥237.6B¥390.2B¥306.5B(¥118.4B)¥51.4B
Owner-earnings marginowner earnings ÷ revenue4%4%4%-1%1%

Owner earnings is the cash an owner could pull out without starving the business: operating cash less the maintenance capital it must spend to hold its position (here about ¥96.0B, roughly its depreciation, the rate its assets wear out). The other ¥58.9B of its capital spending is growth it chose, not upkeep it owed; charged only with the maintenance it must do, the business earns well more than the year's free cash flow shows.

Maintenance capex is estimated as depreciation where a growing business invests above it; free cash flow is the figure the scorecard's free-cash margin reads.

II

Quality & stewardship

Returns, the balance sheet, and stewardship. The same checks the US pages run, in yen.

Owner’s Scorecard

FY2026 Annual securities report · source on EDINET →

Will it survive?

  • Comfortable
    Operating income ¥212.2B ÷ interest expense ¥18.1B
    What this means

    Operating profit covers interest with the kind of margin Graham wanted for a defensive holding. Necessary, not sufficient, it says solvent, not cheap.

  • How heavy is the debt, net of cash? ¥1.21T · 5.7× operating profit
    Heavy net debt
    Cash ¥157.1B − debt ¥1.36T
    What this means

    Netting ¥157.1B of cash and short-term investments against ¥1.36T of debt leaves ¥1.21T owed, about 5.7× a year's operating profit (6.4× on the gross debt, before the cash). Net debt is the leverage figure that matters: the cash is already set against the debt. Strategic or illiquid investments aren't counted here.

  • Long (60+ days)
    DSO 38 + DIO 68 − DPO 42 days
    What this means

    Days cash is tied up between paying suppliers and collecting from customers. Lower is better; a long cycle means growth itself eats cash.

Is it a good business?

  • Below average through the cycle
    10-yr median, range -0%–13%; 6% latest = NOPAT ¥167.6B ÷ invested capital ¥2.83T
    Industry peers: median 6%
    What this means

    The rate the business earns on the money tied up in it, Buffett's north star, because over time a stock tracks the ROIC beneath it. Above ~15% sustained hints at a moat; a return below the cost of capital (~8%) erodes value as a business grows rather than building it — the test Buffett weighs most. The headline is the median of the last 10 years (it ran 6% most recently), so one peak or trough year doesn't set the verdict. Asset-light businesses (R&D expensed, little capital) read artificially high, pair this with Owner Earnings.

  • Thin, recently turned positive
    latest ¥296.5B = operating cash ¥392.4B − maintenance capex ¥96.0B; positive each of the last 3 years, after an earlier loss stretch (10-yr median 1%)
    Industry peers: median 6%
    What this means

    What an owner could take out without starving the business: operating cash less the maintenance capital it must spend to hold its position — Buffett's owner earnings. That's 4% of revenue this year, a 1% median across 10 years.

  • Cash-backed
    Cash from ops ¥392.4B ÷ net income ¥171.9B
    What this means

    How much of reported profit showed up as operating cash. Above 1× is reassuring; well below suggests earnings lean on accruals. One year is noisy, growth and working-capital swings distort it, and this is operating cash, not free cash. Watch the multi-year trend.

How is the cash used?

  • Reinvests most of it
    Dividends + buybacks ¥46.5B ÷ Owner Earnings ¥296.5B
    What this means

    Of ¥296.5B Owner Earnings, ¥46.5B (16%) went back to shareholders, ¥44.2B dividends, ¥2.3B buybacks. Returning most of it is the mark of a mature business with little left to reinvest at a high return; reinvesting most could mean a long runway, or empire-building. The split doesn't say which; the return earned on it (see ROIC) does.

  • Investing or harvesting? 1.61×
    Expanding
    Capex ¥154.9B ÷ depreciation ¥96.0B
    What this means

    Descriptive, not a grade. Above ~1× means investing faster than assets wear out (growth, or, sustained for years, today's earnings carrying less depreciation than tomorrow's will). Below means spending less than it's wearing out (efficiency, or a melting asset base). The ratio won't tell you which; the filings will.

Durability & moat, 2017–2026

Whether the record’s returns held, and what the capital reinvested earned.

  • Profitable years 9 of 10
    What this means

    Lost money in 1 year(s), look at what happened there before trusting the average.

  • Return on capital ≥ 15% 0 of 10 yrs
    What this means

    A moat shows up as a high return on invested capital that holds year after year, not one good vintage.

  • Operating margin 5% → 3% (3-yr avg ends)
    What this means

    Through the cycle the operating margin slipped — about 5% early to 3% lately, median 3% — competition or costs are biting in.

  • Reinvestment, incremental ROIC 5%
    What this means

    Reinvested capital came back at only a modest incremental return — near the cost of capital, where extra growth adds little per dollar. The record shows whether it is a soft stretch or a thinning moat.

  • Owner earnings growth +25%/yr
    What this means

    Owner earnings grew about 25% a year over the record.

  • Worst year 2020 · −0.1% op. margin
    What this means

    Operations went underwater in 2020, understand why before trusting the good years.

  • Dividend record rising
    What this means

    Paid and raised the dividend across the record, the continuity Graham prized.

All figures as filed; the source filing is linked above.

How the cash was used, 2017–2026

Over the record, the business generated ¥1.84T of operating cash; how management split it reads as a balanced allocator, splitting cash between the business, owners, and the balance sheet.

  • Reinvested¥908.1B · 49%
  • Dividends¥331.4B · 18%
  • Buybacks¥307.2B · 17%
  • Retained (debt / cash)¥292.2B · 16%
  • Returned to owners¥638.6B

    65% of the owner earnings the business produced over the span, ¥331.4B as dividends and ¥307.2B as buybacks.

  • Source of fundingOperating cash

    Operating cash covered reinvestment and returns; over the span debt rose ¥311.6B and cash and short-term investments rose ¥67.0B.

  • Average price paid for buybacks

    Buybacks ran ¥307.2B over the span, but the filings don't tag the share count needed to deduce the average price paid.

  • Net change in share count61.1%

    The diluted count rose from 800M to 1289M: issuance (stock pay, deals) outran any buybacks, so owners were diluted on net.

  • Dividend record¥34.30/sh

    Paid in 10 of the years on record, the per-share dividend growing about 15% a year. It was cut at least once along the way.

  • Return on what it retained37%

    Of the earnings it kept rather than paid out (¥742.9B over the span), annual owner earnings (first three years vs last three) grew ¥275.9B, so each retained ¥1 added about 0.37 of yearly owner earnings. Buffett's test, run on owner earnings instead of market value.

Buybacks are gross of stock issued to staff; the share-count line above is the net of that, the figure that decides whether owners gained. The average price paid blends a year of purchases (and any accelerated repurchase), so it is close, not exact. The record of where the cash went and on what terms.

Inverting the record

Invert: instead of why Idemitsu Kosan is a good business, the question is what would make owning it a mistake, and whether those marks are in the record. Disconfirming tests across 2017–2026.

1 of the 5 tests turned up something to look into; the other 4 came back clean.

  • Look hereDid the share count rise anyway?61.1%

    Diluted shares grew 61.1% over 2017–2026, even as the company spent ¥307.2B on buybacks. The repurchases were outrun by issuance — to staff, in a raise, or in a deal — and the filing says which; owners' slice still shrank. Read the buyback line beside this one, not on its own.

And these came back clean
  • Is it less profitable than it was?
  • Did debt outgrow the business?
  • Did reported profit become cash?
  • Did receivables and inventory outpace sales?

Each test is read from the filings and is noisy alone; a flag can mark a cyclical trough or a year of heavy investment as easily as a problem. The filing says which.

III

The price

What a price would have to assume, set against the record above.

What the price implies

reverse-DCF

Type today's close and see the owner-earnings growth you'd have to believe to justify it, beside what Idemitsu Kosan has delivered.

Idemitsu Kosan’s latest year runs above its own through-cycle margin — the reported figure may flatter a peak. So the tool opens on the through-cycle base, Graham’s averaging cutting both ways; clear the toggle below to read the latest year exactly as reported.

¥

Through the cycle, Idemitsu Kosan earns about ¥112.4B on its 1.4% median owner-earnings margin. This year’s 3.7% margin runs above that; the reported figure may flatter a peak you'd be paying on. Normalize, below, values the price on that through-cycle figure rather than the latest year. It comes pre-checked here for that reason, the same rule that already normalizes a trough; clear it to price the year as filed.

Base

The assumptions

9.0% = the 4.55% 10-year Treasury (Jul 15, 2026) + 4.45 points of equity premium. The rate you require is yours to set.

Enter a price above to run it.

Implied by the price
Owner-earnings growth · ’17→’26+24%/yr
Owner-earnings yield
P/E (3-yr earnings ’24–’26)
P/B
Graham’s price gate

Graham capped the multiple at 15×; Buffett and Munger let that rule go: a wonderful business can deserve 50× if the thesis holds. The gate marks the bargain-hunter's floor.

Against a high-grade bond: Graham’s yardstick bond yield%

Prefilled with the 10-year Treasury (4.55%, as of Jul 15, 2026). Edit it for today’s exact figure, or a AAA corporate yield.

Graham measured a stock against the bond you could own instead, the heart of his margin of safety. Enter a price above to weigh the owner-earnings yield against this bond.

Free cash flow ¥237.6B on 1289M diluted shares; net debt ¥1.21T. The base opens on the through-cycle figure (the latest year sits above the record’s own median, and Graham’s averaging cuts both ways); clear Normalize to use the year as filed. Net of stock comp treats option pay as the expense it is. Capex (¥154.9B) runs well above depreciation (¥96.0B), so this is a build-out; Steady-state swaps total capex for maintenance (≈ depreciation), lifting the base to about ¥296.5B, the cash it would throw off if it stopped expanding. The dials set the multiple a growth belief justifies; the price, and every dollar on this page, is yours.

Figures from EDINET, the Financial Services Agency’s disclosure system, the same kind of filing the US pages draw from EDGAR. A separate pool: these names never pass through the US industry classifier.

Manual order: ← 4911 its page in the Manual 5020 →

Industry order: the Refining & Marketing chapter 5020 →