ZSTK
ZeroStack Corp.
NasdaqCMUSDEQUITY
Financial Services
DELAYED
Last price
4.25
▼ 1.64 (27.84%)
MARKET · —
Price
Drag pan · Pinch zoom · Hold crosshair · pick a tool then drag to draw
Open
5.15
Prev close
5.89
Day high
6.74
Day low
4.42
Volume
447.68K
Market cap
$82.38M
P/E (TTM)
—
52W range
1.32 – 47.00
Trailing performance
Returnvs SPY
1W
+142.78%
+144.2%
1M
+205.84%
+202.1%
3M
+9.79%
+6.7%
6M
-43.32%
-54.4%
YTD
-24.76%
-37.0%
1Y
-76.69%
-96.7%
3Y
-94.17%
-168.3%
5Y
—
—
Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.
Unusual options activity
Nothing crossed the thresholds in the expiries we scanned.
That is the normal state — most contracts trade well inside their existing open interest.
That is the normal state — most contracts trade well inside their existing open interest.
Contracts trading at or above their open interest, ranked by notional and where the print landed.
Free account
5 more panels on ZSTK open with an account.
Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.
Insider net activity
Net shares
0
Net selling
Buy transactions
0
0 shares
Sell transactions
0
—
Net transactions
0
Buys less sells
Sell : buy shares
—
Not enough filings
Insider-held shares
11.12M
Total on file
Insider transactions
| Date | Insider | Action | Shares | Value | Held |
|---|---|---|---|---|---|
| Jul 20, 26 | REIS-FARIA DANIEL Chief Executive Officer |
CONVERSION | 5.95M | $595 | Direct |
| Jul 20, 26 | HEINRICH MICHAEL Officer and Director |
BUY | 4.61M | $7.60M | Indirect |
| Dec 13, 24 | STARKE CLIFFORD A Chief Executive Officer |
— | 900.00K | — | Direct |
| Dec 13, 24 | WOO EDWARD Director |
— | 50.00K | — | Direct |
| Dec 13, 24 | DORF SAMMY Officer and Director |
— | 250.00K | — | Direct |
| Sep 13, 24 | STARKE CLIFFORD A Chief Executive Officer |
BUY | 6.79K | $6.46K | Direct |
| Sep 6, 24 | WOLKIN HAROLD MORTON Director |
BUY | 25.00K | $24.25K | Direct |
| Sep 5, 24 | STARKE CLIFFORD A Chief Executive Officer |
BUY | 51 | $48 | Direct |
What this is, and what it is not
These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.
A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.
This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.
Officer and director trades in their own stock, straight from Form 4 filings.
Insider holders
| Name | Relation | Shares held | Latest |
|---|---|---|---|
DORF SAMMY |
Officer and Director | 250.00K | Stock Award(Grant) |
HEINRICH MICHAEL |
Officer and Director | — | Purchase |
REIS-FARIA DANIEL |
Chief Executive Officer | 5.95M | Conversion of Exercise of derivative security |
STARKE CLIFFORD A |
Chief Executive Officer | 2.25M | Stock Award(Grant) |
WOLKIN HAROLD MORTON |
Director | 25.00K | Purchase |
WOO EDWARD |
Director | 136.72K | Stock Award(Grant) |
Fundamentals
Market cap$82.38M
Enterprise value$82.49M
Revenue (TTM)$40.03M
Gross profit$5.26M
EBITDA$-12.56M
Net income$-174.80M
EPS (TTM)$-44.52
Free cash flow$-179.75K
Total cash$2.64M
Total debt$2.76M
Book value / share$5.69
Shares outstanding17.49M
Float6.81M
Short % of float0.24%
Dividend yield—
Beta (5Y)1.71
Valuation & profitability ratios
Trailing P/E—
Forward P/E—
PEG ratio—
Price / sales—
Price / book0.83
EV / revenue2.06
EV / EBITDA-6.57
Gross margin13.14%
Operating margin-18.08%
Profit margin0.00%
Return on equity-1959.59%
Return on assets-33.36%
Debt / equity19.95
Current ratio0.95
Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.
Financial statements
| Line item | 2025 | 2024 | 2023 | 2022 | 2021 | YoY |
|---|---|---|---|---|---|---|
| Total revenue | $35.68M | $35.87M | $76.07M | $33.40M | — | -0.5% |
| Operating revenue | $35.68M | $35.87M | $76.07M | $33.40M | — | -0.5% |
| Cost of revenue | $34.03M | $33.67M | $58.33M | $20.15M | — | +1.1% |
| Gross profit | $1.65M | $2.20M | $17.74M | $13.25M | — | -24.9% |
| Research & development | — | $418.00K | $62.00K | $388.00K | $132.00K | — |
| Selling, general & admin | $10.59M | $11.05M | $23.34M | $28.78M | — | -4.2% |
| Total operating expense | $12.94M | $11.09M | $28.35M | $33.75M | — | +16.6% |
| Operating income | -$11.29M | -$8.89M | -$10.61M | -$20.50M | — | -26.9% |
| Net interest income | -$199.00K | -$139.00K | -$92.00K | $29.00K | — | -43.2% |
| Pre-tax income | -$115.35M | -$9.32M | -$48.30M | -$48.11M | — | -1,137.1% |
| Tax provision | $59.00K | $22.00K | -$1.63M | -$1.41M | — | +168.2% |
| Net income | -$119.73M | -$15.91M | -$57.04M | -$52.41M | — | -652.7% |
| Net income to common | -$119.73M | -$15.91M | -$57.04M | -$52.41M | — | -652.7% |
| Basic EPS | -43.49 | -50.02 | -302.25 | -530.40 | — | +13.1% |
| Diluted EPS | -43.49 | -50.02 | -302.25 | -530.40 | — | +13.1% |
| EBIT | -$115.15M | -$9.19M | -$48.20M | -$20.50M | — | -1,153.7% |
| EBITDA | -$114.57M | -$8.42M | -$45.72M | -$17.87M | — | -1,261.2% |
| Basic shares | 2.75M | 318.00K | 188.62K | 98.28K | — | +765.7% |
| Diluted shares | 2.75M | 318.00K | 188.62K | 98.28K | — | +765.7% |
| Line item | 2025 | 2024 | 2023 | 2022 | YoY |
|---|---|---|---|---|---|
| Cash & equivalents | $5.60M | $5.22M | $4.35M | $8.94M | +7.1% |
| Cash & short-term investments | $5.60M | $5.22M | $4.35M | $8.94M | +7.1% |
| Accounts receivable | $370.00K | $713.00K | $1.98M | $2.90M | -48.1% |
| Inventory | $1.90M | $2.24M | $8.51M | $8.75M | -15.3% |
| Total current assets | $8.72M | $19.76M | $21.36M | $31.16M | -55.9% |
| Property, plant & equipment | $514.00K | $255.00K | $1.24M | $3.34M | +101.6% |
| Goodwill & intangibles | $71.95M | $0 | $946.00K | $41.11M | — |
| Total assets | $130.24M | $26.23M | $23.63M | $80.99M | +396.6% |
| Total current liabilities | $8.63M | $18.83M | $16.28M | $17.45M | -54.2% |
| Current debt | $2.72M | $2.08M | $1.93M | $1.09M | +30.9% |
| Long-term debt | $50.77M | — | — | — | — |
| Total debt | $53.93M | $2.33M | $3.67M | $3.76M | +2,212.7% |
| Total liabilities | $59.68M | $21.72M | $17.22M | $24.57M | +174.8% |
| Retained earnings | -$277.79M | -$158.14M | -$142.55M | -$90.86M | -75.7% |
| Shareholder equity | $70.55M | $4.51M | $6.40M | $56.82M | +1,464.3% |
| Working capital | $88.00K | $931.00K | $5.08M | $13.71M | -90.5% |
| Net tangible assets | -$1.40M | $4.51M | $5.46M | $15.71M | -131.0% |
| Shares issued | 1.05M | 474.67K | 229.10K | 173.81K | +120.3% |
| Line item | 2025 | 2024 | 2023 | 2022 | 2021 | YoY |
|---|---|---|---|---|---|---|
| Net income | -$119.73M | -$15.91M | -$56.35M | -$52.63M | — | -652.7% |
| Depreciation & amortisation | $582.00K | $768.00K | $2.48M | $2.63M | — | -24.2% |
| Stock-based compensation | $1.21M | $2.78M | $1.59M | $3.40M | — | -56.5% |
| Change in working capital | $2.42M | $3.15M | -$3.35M | $3.82M | — | -23.1% |
| Operating cash flow | -$8.68M | -$5.03M | -$8.40M | -$15.94M | — | -72.4% |
| Capital expenditure | -$127.00K | -$134.00K | -$163.00K | -$1.29M | — | +5.2% |
| Investing cash flow | -$3.46M | $203.00K | -$234.00K | -$15.80M | — | -1,803.4% |
| Share buybacks | — | — | $0 | -$255.00K | $0 | — |
| Dividends paid | — | — | — | — | $0 | — |
| Financing cash flow | $11.35M | $6.49M | $3.15M | $4.41M | — | +74.7% |
| Free cash flow | -$8.80M | -$5.17M | -$8.56M | -$17.23M | — | -70.4% |
| End cash position | $5.62M | $5.25M | $4.38M | $8.94M | — | +7.1% |
| Line item | 2026-06-30 | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 | 2025-03-31 | YoY |
|---|---|---|---|---|---|---|---|
| Total revenue | $13.66M | $7.27M | $9.35M | $9.75M | $9.71M | — | +87.8% |
| Operating revenue | $13.66M | $7.27M | $9.35M | $9.75M | $9.71M | — | +87.8% |
| Cost of revenue | $12.04M | $4.13M | $9.19M | $9.41M | $9.09M | — | +191.7% |
| Gross profit | $1.62M | $3.15M | $160.00K | $335.00K | $619.00K | — | -48.6% |
| Research & development | — | — | — | — | $73.00K | $113.00K | — |
| Selling, general & admin | $3.68M | $4.39M | $4.13M | $2.74M | $1.65M | — | -16.2% |
| Total operating expense | $4.09M | $5.06M | $4.96M | $3.61M | $2.27M | — | -19.2% |
| Operating income | -$2.47M | -$1.91M | -$4.80M | -$3.28M | -$1.65M | — | -29.3% |
| Net interest income | -$89.00K | -$66.00K | -$35.00K | -$61.00K | -$80.00K | — | -34.8% |
| Pre-tax income | -$24.36M | -$36.67M | -$109.96M | -$3.61M | -$1.53M | — | +33.6% |
| Tax provision | $258.00K | -$9.00K | -$54.00K | $18.00K | $7.00K | — | +2,966.7% |
| Net income | -$24.61M | -$36.66M | -$109.90M | -$6.66M | -$2.41M | — | +32.9% |
| Net income to common | -$24.61M | -$36.66M | -$109.90M | -$6.66M | -$2.41M | — | +32.9% |
| Basic EPS | -2.47 | -3.68 | — | -9.05 | -4.27 | -1.54 | +32.9% |
| Diluted EPS | -2.47 | -3.68 | — | -9.05 | -4.27 | -1.54 | +32.9% |
| EBIT | -$24.27M | -$36.60M | -$109.92M | -$3.55M | -$1.45M | — | +33.7% |
| EBITDA | -$24.26M | -$36.60M | -$109.92M | -$3.35M | -$1.26M | — | +33.7% |
| Basic shares | 9.97M | 9.96M | — | 736.00K | 564.87K | 492.00K | +0.1% |
| Diluted shares | 9.97M | 9.96M | — | 736.00K | 564.87K | 492.00K | +0.1% |
| Line item | 2026-06-30 | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 | 2025-03-31 | YoY |
|---|---|---|---|---|---|---|---|
| Cash & equivalents | $2.64M | $1.98M | $5.60M | $13.10M | $1.47M | — | +33.5% |
| Cash & short-term investments | $2.64M | $1.98M | $5.60M | $13.10M | $1.47M | — | +33.5% |
| Accounts receivable | $492.00K | $303.00K | $370.00K | $783.00K | $3.41M | — | +62.4% |
| Inventory | $1.60M | $1.61M | $1.90M | $2.48M | $4.80M | — | -0.5% |
| Total current assets | $10.55M | $11.25M | $8.72M | $18.09M | $13.20M | — | -6.2% |
| Property, plant & equipment | $436.00K | $470.00K | $514.00K | $562.00K | $1.89M | — | -7.2% |
| Goodwill & intangibles | $14.15M | $33.42M | $71.95M | — | $7.42M | $7.21M | -57.7% |
| Total assets | $25.19M | $45.19M | $130.24M | $74.02M | $22.67M | — | -44.3% |
| Total current liabilities | $11.11M | $8.10M | $8.63M | $8.70M | $13.81M | — | +37.1% |
| Current debt | $2.38M | $3.12M | $2.72M | $2.70M | $2.98M | — | -23.7% |
| Long-term debt | $34.00K | $38.00K | $50.77M | $64.00K | $2.00M | — | -10.5% |
| Total debt | $2.76M | $3.55M | $53.93M | $3.25M | $7.77M | — | -22.3% |
| Total liabilities | $11.37M | $8.39M | $59.68M | $9.10M | $18.64M | — | +35.5% |
| Retained earnings | -$339.06M | -$314.45M | -$277.79M | -$167.88M | -$161.31M | — | -7.8% |
| Shareholder equity | $13.82M | $36.80M | $70.55M | $64.92M | $4.02M | — | -62.4% |
| Working capital | -$559.00K | $3.14M | $88.00K | $9.39M | -$611.00K | — | -117.8% |
| Net tangible assets | -$330.00K | $3.38M | -$1.40M | $64.92M | -$3.39M | — | -109.8% |
| Shares issued | 2.43M | 2.43M | 1.05M | 712.36K | 578.68K | — | 0.0% |
| Line item | 2026-06-30 | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 | 2025-03-31 | YoY |
|---|---|---|---|---|---|---|---|
| Net income | -$24.61M | -$36.66M | -$109.90M | -$6.66M | -$2.41M | — | +32.9% |
| Depreciation & amortisation | $4.00K | $4.00K | $4.00K | $201.00K | $195.00K | — | 0.0% |
| Stock-based compensation | $1.60M | $2.77M | $323.00K | $541.00K | $172.00K | — | -42.1% |
| Change in working capital | $3.29M | -$1.92M | $532.00K | $4.10M | -$1.03M | — | +271.3% |
| Operating cash flow | $1.37M | -$3.85M | -$3.16M | $33.00K | -$2.89M | — | +135.7% |
| Capital expenditure | — | — | -$29.00K | -$9.00K | -$65.00K | -$24.00K | — |
| Investing cash flow | $0 | $0 | -$4.11M | $1.35M | -$1.07M | — | — |
| Financing cash flow | -$727.00K | $571.00K | -$719.00K | $10.55M | $1.51M | — | -227.3% |
| Free cash flow | $1.37M | -$3.85M | -$3.19M | $24.00K | -$2.95M | — | +135.7% |
| End cash position | $2.96M | $2.30M | $5.62M | $13.13M | $1.51M | — | +28.7% |
Options analytics
Put / call volume
—
—
Put / call open interest
—
Positioning, not flow
Max pain
—
—
ATM implied vol
—
Nearest strike to spot
Skew (10% OTM)
—
—
Call volume
0
Contracts, this expiry
Put volume
0
Contracts, this expiry
Heaviest call OI
—
—
Heaviest put OI
—
—
Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.
Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.
Earnings
Reported vs expected · EPS
| Quarter | Est. | Actual | Surprise |
|---|---|---|---|
| Jun 2026 | -0.11 | -2.47 | -2,145.5% |
| Mar 2026 | — | -3.68 | — |
| Dec 2025 | -0.39 | -34.29 | -8,692.3% |
| Sep 2025 | -2.13 | — | — |
Forward consensus
| Period | EPS | Analysts | Revenue | Growth |
|---|---|---|---|---|
| Current quarter | -0.12 | 1 | $7.42M | -47.9% |
| Next quarter | -0.12 | 1 | $7.50M | -19.8% |
| Current year | -4.02 | 1 | $29.50M | -41.2% |
| Next year | — | — | $0 | — |
Analyst targets & ownership
Mean target$11.00
High target$11.00
Low target$11.00
Implied upside158.82%
Analyst count1
ConsensusNONE
Strong buy / Buy0 / 1
Hold0
Sell / Strong sell0 / 0
Held by insiders63.59%
Held by institutions0.40%
Institutions holding13
Price targets, consensus spread, insider and institutional ownership.
Moving averages & technicals
SMA 10
2.80
+51.93% from price
SMA 20
2.21
+112.96% from price
SMA 50
2.68
+75.43% from price
SMA 100
4.02
+5.68% from price
SMA 200
6.04
-22.01% from price
EMA 12
3.12
+36.25% from price
EMA 26
2.63
+61.45% from price
EMA 50
2.90
+46.35% from price
RSI (14)
68.0
Neutral
MACD (12,26,9)
0.49
Hist 0.47
ATR (14)
1.24
26.38% of price
Realised vol 30D
319.5%
Annualised
Bollinger upper
4.77
20, 2σ
Bollinger lower
-0.34
20, 2σ
50 / 200 cross
Death
2.68 vs 6.04
Trend bias
Below 200
-22.01%
Options chain
Calls
| Strike | Last | Bid | Ask | Vol | OI | IV |
|---|---|---|---|---|---|---|
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
Puts
| Strike | Last | Bid | Ask | Vol | OI | IV |
|---|---|---|---|---|---|---|
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
Every listed expiry, both sides of the book, with volume, open interest and implied volatility.
Risk profile
Beta vs SPY
1.91
More volatile than market
Correlation to SPY
0.11
Largely independent
Realised vol 30D
319.5%
Annualised
Market vol 1Y
12.9%
SPY, annualised
Max drawdown 1Y
-96.0%
Peak to trough
Max drawdown 5Y
-100.0%
Peak to trough
ATR 14
1.24
26.38% of price
Beta (reported)
1.71
5Y monthly, from filing
Short interest
Shares short
27.96K
Prior 29.61K
Change vs prior
-5.6%
Shorts covering
% of float
0.24%
Normal
% of shares out
0.24%
Against total outstanding
Days to cover
0.9
Liquid
Float
6.81M
Freely tradeable shares
Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.
Dividends & splits
Forward rate—
Forward yield—
5-year avg yield—
Payout ratio0.00%
Ex-dividend date—
Next pay date—
Last split1:39
Split dateAug 4, 2025
SEC filings
Corporate Changes & Voting Matters
8-K · 2026-08-21
Corporate Changes & Voting Matters
8-K · 2026-08-19
Corporate Changes & Voting Matters
8-K12B · 2026-08-18
Periodic Financial Reports
10-Q · 2026-07-31
Additional Forms
D · 2026-07-29
Corporate Changes & Voting Matters
8-K · 2026-07-23
Corporate Changes & Voting Matters
8-K · 2026-07-20
Offering Registrations
S-4 · 2026-06-10
Headlines
ZeroStack Files Prospectus for Common Stock Offering by Selling Securityholders
MT Newswires · 1d ago
Top Midday Gainers
MT Newswires · 3d ago
ZeroStack Shares Jump After $1 Billion MemeCore Token Deal
MT Newswires · 3d ago
MemeCore Commits $1B in Tokens to ZeroStack
CryptoProwl · 3d ago
ZeroStack Announces Completion of Continuance to Texas
TMX Newsfile · 4d ago
ZeroStack Insider Bought Shares Worth $3,479,013, According to a Recent SEC Filing
MT Newswires · 33d ago
ZeroStack Corp. Secures Purchase Orders for up to US$14.7 Million of Inventory from Two Pharmaceutical Companies
TMX Newsfile · 45d ago
PRIVATE STRATEGY · BY QUALIFICATION
The same data. A different seat.
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