PKE, Park Aerospace Corp.

Will it survive?

• Can it pay its interest? —
  No meaningful interest burden
  Little or no interest expense reported
  What this means

  Little or no interest expense reported, the business isn't leaning on lenders to operate.

• How heavy is the debt, net of cash? +$17M
  Net cash
  Cash $78M + ST investments $11M − debt $72M
  What this means

  Cash and short-term investments exceed every dollar of debt by $17M, on net the company owes nothing, and can act from strength when others can't. Net debt is the leverage figure that matters: the cash is already set against the debt. Strategic or illiquid investments aren't counted here.

• How long is cash tied up? 82d
  Long (60+ days)
  DSO 55 + DIO 53 − DPO 27 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?

• Return on invested capital 6%
  Below average through the cycle
  10-yr median, range -1%–20%; 8% latest = NOPAT $10M ÷ invested capital $123M
  Industry peers: median 5%
  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 8% 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.

• Owner-earnings margin 7%
  Solid through the cycle
  10-yr median margin, range -3%–13%; latest $9M = operating cash $11M − maintenance capex $2M
  Industry peers: median -1%
  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 13% of revenue this year, a 7% median across 10 years. Treating stock comp as the real expense it is (less $401K of SBC) leaves $9M.

• Are earnings backed by cash? 1.02×
  Cash-backed
  Cash from ops $11M ÷ net income $11M
  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?

• Where do the earnings go? 128%
  Returned more than it generated
  Dividends + buybacks $12M ÷ Owner Earnings $9M
  What this means

  The company returned more than it generated: against $9M of Owner Earnings, $12M (128%) went back to shareholders, $10M dividends, $2M buybacks — the excess came from the balance sheet or borrowing, not the year's operations. Net of $401K stock comp, the real buyback was about $2M. Sustained, that pattern draws down cash or adds debt; the net-debt line above shows where it stands.

• Investing or harvesting? 1.10×
  Maintaining
  Capex $2M ÷ depreciation $2M
  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.

Graham’s defensive tests · 4 of 6 met

Graham’s numerical criteria for the defensive investor (The Intelligent Investor, ch. 14), run on the filings. A floor of safety, not a buy signal; many fine modern businesses fail his strictest liquidity rules by design.

• Adequate size Miss
  Revenue ≥ $2B · $73M
  What this means

  Big enough to weather a storm. Graham's 1972 floor was ~$100M of sales (≈ $700M today); we use a $2B revenue line as a conservative modern stand-in.

• Strong liquidity Pass
  Current ratio ≥ 2× · 18.24×
  What this means

  Current assets at least twice current liabilities, near-term bills covered without touching the business. Strict by design: many cash-rich modern firms run leaner and miss it, holding their cushion in longer-dated securities.

• Conservative debt Pass
  Debt ≤ working capital · $72M vs $103M WC
  What this means

  Graham's rule that borrowings not exceed net current assets. Capital-heavy and buyback-heavy firms routinely fail it, read it next to interest coverage, not alone.

• Earnings stability Pass
  A profit every year (10-yr record) · no losses
  What this means

  Graham wanted earnings in each of the past ten years, the stability a defensive owner leans on.

• Dividend record Pass
  Uninterrupted dividends · paid every year (10)
  What this means

  An unbroken dividend was Graham's mark of durability. He wanted twenty years; the filings show about ten, and a single suspension breaks the streak. Non-payers, many fine modern compounders, fall outside his defensive net by design.

• Earnings growth Miss
  Earnings +33% over the record · −83%
  What this means

  At least a third more earnings than a decade ago, averaging three years at each end. Net income (not per-share), so stock splits don't distort it, buybacks and dilution show up in the share-count line instead.

• Moderate price —
  P/E ≤ 15 and P/E × P/B ≤ 22.5 · decided by the price
  What this means

  Graham's valuation gate, the wall he kept between a sound business and a sound investment. Three-year average earnings are $0.39/share (latest year $0.54), the averaged base the calculator's gate runs on, and book value is $6.22/share. Enter a price in “What the price implies” just below for the P/E, P/B, and whether it clears. But this is the rule Buffett outgrew: there's no hard P/E law, and a wonderful business can deserve a far richer multiple if the thesis holds, treat it as the bargain-hunter's floor, not a verdict on the price.

Durability & moat, 2017–2026

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

• Profitable years 10 of 10
  What this means

  Never lost money over the record, the earnings stability Graham insisted on.

• Operating margin 5% → 16% (3-yr avg ends)
  What this means

  Through the cycle the operating margin widened — about 5% early to 16% lately, median 15% — pricing power intact or improving.

• Reinvestment, incremental ROIC returns capital
  What this means

  The capital base barely grew: this business returns cash through dividends and buybacks rather than reinvesting. Judge it on the cash returned, not on compounding.

• Owner earnings growth −2%/yr
  What this means

  Owner earnings shrank about 2% a year over the record.

• Worst year 2017 · −1.8% op. margin
  What this means

  Operations went underwater in 2017, understand why before trusting the good years.

• Share count −0.1%/yr
  What this means

  Roughly flat share count, little dilution, little buyback.

• Dividend record rising
  What this means

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

• How management talks about it Owner’s terms
  What this means

  Returns have thinned, but the filing discusses it in an owner’s vocabulary rather than selling past it — candor about a hard stretch counts for more than an adjective.