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ZeroStack Corp.

ZSTK Nasdaq Finance Services Financials FY2021–FY2025

ZeroStack Corp. had $35.7M of revenue in fiscal 2025, down 0.5% on the year before.

Last close Β· Oct 23, 2026

$3.28

2.4%

What ZeroStack Corp. does

ZSTK Β· Finance Services

From its latest annual report

No business description yet.

Filing details

Legal name
ZeroStack Corp.
Fiscal year ends
December 31, 2025
Latest annual report
10-K Β· Feb 27, 2026
Accession Β· CIK
0001062993-26-001203 Β· 0001790169

Earnings calendar Β· ZeroStack Corp.

Every quarter, companies publish how much they sold and earned. These are the days ZeroStack Corp. did it, and the next one. Share prices often move a lot on those days.

Next results

November 4, 2026

Wednesday Β· in 9 days

Time
Time not announced
Covers
Period ended Sep 30, 2026
Source
Earnings calendar
See who else reports that week β†’
Date Results for Time Source
Jul 31, 2026 Q2 '26 After the market closes 10-Q β†—
May 4, 2026 Q1 '26 Time not announced 10-Q β†—
Feb 27, 2026 Q4 '25 After the market closes 10-K β†—
Nov 5, 2025 Q3 '25 After the market closes 10-Q β†—
Aug 1, 2025 Q2 '25 After the market closes 10-Q β†—
May 13, 2025 Q1 '25 After the market closes 10-Q β†—
Mar 24, 2025 Q4 '24 After the market closes 10-K β†—
Nov 13, 2024 Q3 '24 After the market closes 10-Q β†—

From SEC filings: the results press release (8-K) or, without one, the quarterly or annual report.

KIRA’s summary AI analyst

Hi! I read ZeroStack Corp.’s latest annual report (fiscal 2025). Here is what stands out:

6 to watch

1.Sales and profit

See section β†’
  • ZeroStack Corp. had $35.7M of revenue in fiscal 2025, down 0.5% on the year before.
  • Its operating margin was βˆ’433.5%, down 408.6Β pts: of every 100 in sales, about βˆ’433 is left after running the business.
  • ZeroStack Corp. lost $120M in fiscal 2025.

3.Financial health

See section β†’
  • ZeroStack Corp. owes $47.9M more than it holds in cash.
  • Its return on capital was βˆ’103.1%: every 100 invested in the business earned about βˆ’103 in a year.
  • ZeroStack Corp. passes 1 of 9 financial health tests (Piotroski F-score).

ZeroStack Corp. in 30 seconds

Good So-so Weak

Weak

Are sales growing?

βˆ’0.5%

No. Sales fell 0.5% last year.

Weak

Does it make a profit?

βˆ’335.6%

No. It lost money last year.

Weak

Does profit turn into cash?

βˆ’24.7%

No. It spent more cash than it brought in.

Weak

How healthy are the accounts?

1 / 9

Weak. It passes 1 of 9 health tests.

For information

How is the share priced?

β€”

No P/E: it made no profit over the last four quarters.

Rules of thumb on reported numbers. A starting point, not a recommendation.

Key numbers, fiscal 2025

Market cap Last close times the latest diluted share count, so it is approximate.
$0.0M
Oct 23 close
P/E Last close divided by diluted earnings per share over the last four quarters.
β€”
On βˆ’$43.83 EPS (TTM)

Revenue

Total sales reported in the income statement.

KIRA Β· ZeroStack Corp. had $35.7M of revenue in fiscal 2025, down 0.5% on the year before.

See the full section β†’

Operating margin

Operating income as a share of revenue.

KIRA Β· Its operating margin was βˆ’433.5%, down 408.6Β pts: of every 100 in sales, about βˆ’433 is left after running the business.

See the full section β†’

Net income

Profit after all expenses, interest and tax.

KIRA Β· ZeroStack Corp. lost $120M in fiscal 2025.

See the full section β†’

Free cash flow

Cash from operations minus capital spending.

KIRA Β· Free cash flow was βˆ’$8.8M in fiscal 2025, βˆ’24.7% of revenue.

See the full section β†’

Return on capital

After-tax operating income as a share of the money invested in the business: debt plus equity, minus cash.

KIRA Β· Its return on capital was βˆ’103.1%: every 100 invested in the business earned about βˆ’103 in a year.

See the full section β†’

Sales and profit

Is it selling more, and how much does it keep?

Revenue and margins

KIRA Β· ZeroStack Corp. had $35.7M of revenue in fiscal 2025, down 0.5% on the year before. Its operating margin was βˆ’433.5%, down 408.6Β pts: of every 100 in sales, about βˆ’433 is left after running the business.

In plain words: Revenue is all the money customers paid. The margins show how many cents of each dollar of sales are left over at each step: after making the product (gross), after running the business (operating) and after everything, tax included (net).

Revenue

Revenue

Margins, % of revenue

Gross Operating Net FCF

Margins, % of revenue

Gross Operating Net FCF

Net income and earnings per share

KIRA Β· ZeroStack Corp. lost $120M in fiscal 2025.

Loss periods are shown in red.

In plain words: Net income is the profit left after every cost and tax. Earnings per share (EPS) splits that profit across every share, so it shows what one share earned.

Net income

Net income

Diluted EPS

Diluted EPS

Cash and shareholders

How much cash comes in, and where does it go?

Cash flow

KIRA Β· Free cash flow was βˆ’$8.8M in fiscal 2025, βˆ’24.7% of revenue.

Cash from operations minus capital spending.

In plain words: Profit on paper is not the same as cash in the bank. Free cash flow is the cash left after paying to run and maintain the business: the money it can hand back to shareholders, save or invest.

Free cash flow

Free cash flow

Cash from operations vs capital spending

Cash from operations Capital spending

Cash from operations vs capital spending

Cash from operations Capital spending

Dividends, buybacks and share count

In plain words: Companies hand cash back in two ways: dividends (cash paid to shareholders) and buybacks (buying back their own shares, so each remaining share owns a bigger slice).

Dividends and buybacks

Dividends Buybacks

Dividends and buybacks

Dividends Buybacks

Diluted shares outstanding (annual)

Insider trades

KIRA Β· In the last 12 months, insiders bought $3.5M and sold $0.0M of shares on the open market.

Open-market purchases and sales by officers, directors and 10% owners, from Form 4 filings. β€œPlan” marks trades under a pre-arranged Rule 10b5-1 plan.

In plain words: Insiders are the people who run or own a big part of the company. Buying with their own money can signal confidence; selling often has personal reasons, like taxes or diversifying.

Bought, 12 months

$3.5M

1 insider

Sold, 12 months

$0.0M

1 insider

Of sales under plans

0%

$0.0M

DateInsiderTradeSharesPriceValueFiling
Aug 19, 2026 Rudy RongPresident Sold 1,000 $7.57 $0.0M Form 4
Jul 20, 2026 Michael HeinrichExecutive Chairman, Director Bought 4,608,575 $0.75 $3.5M Form 4

Financial health

Can it carry its debts, and how well does it use its money?

Balance sheet

KIRA Β· ZeroStack Corp. owes $47.9M more than it holds in cash.

Cash, debt and the ratios that show how comfortably ZeroStack Corp. can carry it.

In plain words: What the company owns and what it owes. More cash than debt is a cushion for bad times; a lot of debt leaves less room when business slows down.

Cash vs debt (incl. leases)

Cash Debt
Fiscal year endFY21FY22FY23FY24FY25
Cash and short-term investments $37.6M$8.9M$4.4M$5.2M$5.6M
Debt incl. finance leases $0.0M$1.1M$1.9M$2.1M$53.5M
Debt / equity 0.0x0.0x0.3x0.5x0.8x
Current ratio 7.8x1.8x1.3x1.0x1.0x
Quick ratio 7.3x1.3x0.8x0.9x0.8x
Total assets $85.5M$81.0M$23.6M$26.2M$130M
Total liabilities $8.5M$24.6M$17.2M$21.7M$59.7M
Shareholders' equity $77.2M$56.8M$6.4M$4.5M$70.6M
Net debt (βˆ’ = net cash) βˆ’$37.6Mβˆ’$7.8Mβˆ’$2.4Mβˆ’$3.1M$47.9M

Returns on capital

KIRA Β· Its return on capital was βˆ’103.1%: every 100 invested in the business earned about βˆ’103 in a year.

After-tax operating income as a share of the money invested in the business: debt plus equity, minus cash.

In plain words: How much profit the business makes on the money put into it. A higher percentage means each dollar invested works harder.

Return on capital, equity and assets (annual)

Return on capital Return on equity Return on assets

Piotroski F-score

KIRA Β· ZeroStack Corp. passes 1 of 9 financial health tests (Piotroski F-score).

Nine pass/fail tests of profitability, funding and efficiency. 8–9 is strong, 0–2 weak.

In plain words: Nine yes/no tests of financial health, one point each. A green tick is a pass: 7 to 9 points is solid, 0 to 3 is weak.

TestFY21FY22FY23FY24FY25
Net income is positive βœ• βœ• βœ• βœ• βœ•
Cash from operations is positive βœ• βœ• βœ• βœ• βœ•
Return on assets rose β€” βœ• βœ• βœ“ βœ•
Cash from operations exceeds net income βœ“ βœ“ βœ“ βœ“ βœ“
Debt fell relative to assets β€” βœ• βœ• βœ“ βœ•
Current ratio rose β€” βœ• βœ• βœ• βœ•
Share count didn't rise β€” β€” βœ• βœ“ βœ•
Gross margin rose β€” βœ“ βœ• βœ• βœ•
Revenue rose relative to assets β€” βœ“ βœ“ βœ• βœ•
F-score β€” / 33 / 82 / 94 / 91 / 9
Accruals ratio βˆ’0.5%βˆ’43.8%βˆ’93.0%βˆ’43.6%βˆ’142.0%
Altman Z'' 9.74βˆ’4.04βˆ’32.19βˆ’21.49βˆ’13.69

All figures

Every number, year by year.

5 years of figures

Amounts in USD. Hover a ratio’s name for its definition.

In plain words: Every number we have, year by year. Download it as a spreadsheet if you want to dig deeper.

Download CSV
Fiscal yearFY21FY22FY23FY24FY25
Income statement
Revenue $9.0M $33.4M $76.1M $35.9M $35.7M
Net interest income $0.0M $0.1M βˆ’$0.1M βˆ’$0.2M βˆ’$0.2M
Gross profit $2.4M $13.3M $17.7M $2.2M $1.6M
Research and development $0.1M $0.4M $0.1M $0.4M β€”
Operating income βˆ’$19.0M βˆ’$47.2M βˆ’$50.4M βˆ’$8.9M βˆ’$155M
Pretax income βˆ’$21.5M βˆ’$48.1M βˆ’$48.3M βˆ’$9.3M βˆ’$115M
Income tax βˆ’$0.1M βˆ’$1.4M βˆ’$1.6M $0.0M $0.1M
Net income βˆ’$21.4M βˆ’$52.4M βˆ’$57.0M βˆ’$15.9M βˆ’$120M
Diluted EPS β€” βˆ’$13.68 βˆ’$7.75 βˆ’$50.02 βˆ’$43.49
Diluted shares β€” 0.00B 0.00B 0.00B 0.00B
Cash flow
Cash from operations βˆ’$20.9M βˆ’$15.9M βˆ’$8.4M βˆ’$5.0M βˆ’$8.7M
Capital expenditure $4.0M $1.3M $0.2M $0.1M $0.1M
Free cash flow βˆ’$24.9M βˆ’$17.2M βˆ’$8.6M βˆ’$5.2M βˆ’$8.8M
Depreciation and amortization $0.5M $2.6M $2.5M $0.8M $0.6M
Stock-based compensation $1.3M $3.4M $1.6M $2.8M $1.2M
Acquisitions $8.1M $14.5M $0.0M βˆ’$0.1M βˆ’$0.5M
Share buybacks $0.0M $0.3M $0.0M β€” β€”
Dividends and buybacks $0.0M $0.3M $0.0M β€” β€”
Balance sheet
Cash and short-term investments $37.6M $8.9M $4.4M $5.2M $5.6M
Total debt $0.0M $1.1M $1.9M $2.1M $53.5M
Current assets $47.9M $31.2M $21.4M $19.8M $8.7M
Current liabilities $6.1M $17.4M $16.3M $18.8M $8.6M
Inventory $3.0M $8.7M $8.5M $2.2M $1.9M
Property and equipment, net $3.8M $1.2M $0.8M $0.1M $0.1M
Goodwill $19.7M $23.4M $0.0M $2.0M β€”
Intangible assets $9.7M $17.7M $0.9M $2.7M β€”
Total assets $85.5M $81.0M $23.6M $26.2M $130M
Total liabilities $8.5M $24.6M $17.2M $21.7M $59.7M
Shareholders' equity $77.2M $56.8M $6.4M $4.5M $70.6M
Margins
Gross margin 27.0% 39.7% 23.3% 6.1% 4.6%
Operating margin βˆ’211.6% βˆ’141.4% βˆ’66.2% βˆ’24.9% βˆ’433.5%
EBITDA margin βˆ’206.0% βˆ’133.5% βˆ’62.9% βˆ’22.7% βˆ’431.9%
Net margin βˆ’237.9% βˆ’156.9% βˆ’75.0% βˆ’44.4% βˆ’335.6%
FCF margin βˆ’277.5% βˆ’51.6% βˆ’11.3% βˆ’14.4% βˆ’24.7%
Net interest share of revenue 0.4% 0.2% βˆ’0.1% βˆ’0.6% βˆ’0.7%
Returns
Return on capital βˆ’37.9% βˆ’76.2% βˆ’998.2% βˆ’515.8% βˆ’103.1%
Return on capital employed βˆ’23.9% βˆ’74.3% βˆ’685.5% βˆ’120.7% βˆ’127.2%
Return on equity βˆ’27.7% βˆ’78.2% βˆ’180.4% βˆ’291.5% βˆ’319.0%
Return on assets βˆ’25.0% βˆ’63.0% βˆ’109.0% βˆ’63.8% βˆ’153.0%
Return on tangible equity βˆ’44.7% βˆ’333.6% βˆ’1,045.0% β€” βˆ’169.7%
Growth
Revenue growth β€” 271.9% 127.8% βˆ’52.9% βˆ’0.5%
Share count change β€” β€” 94.7% βˆ’95.9% 833.3%
Financial health
Debt / equity 0.0x 0.0x 0.3x 0.5x 0.8x
Current ratio 7.8x 1.8x 1.3x 1.0x 1.0x
Quick ratio 7.3x 1.3x 0.8x 0.9x 0.8x
Capital allocation
Capex / revenue 44.4% 3.9% 0.2% 0.4% 0.4%
Stock comp / revenue 14.9% 10.2% 2.1% 7.7% 3.4%
Quality scores
Piotroski F-score β€” 3.0 2.0 4.0 1.0
Altman Z'' 9.7 βˆ’4.0 βˆ’32.2 βˆ’21.5 βˆ’13.7
Accruals ratio βˆ’0.5% βˆ’43.8% βˆ’93.0% βˆ’43.6% βˆ’142.0%

Source: SEC EDGAR XBRL filings (CIK 0001790169). Data updated October 24, 2026. Quarterly fourth quarters are the full year minus the first nine months. For information only β€” not investment advice. Check the original filings before relying on any figure.

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