Earnings History
EPS actual vs estimate, surprise %, beat rate, next earnings date
Avg Surprise
-10.1%
Period
EPS Actual
EPS Est
Surprise
June 30, 2026
$-2.47
$-0.11
-2.4%
Dec. 31, 2025
$-27.08
$-0.40
-26.7%
Sept. 30, 2025
$-4.93
$-2.17
-2.8%
June 30, 2025
$-3.90
$-2.39
-1.5%
March 31, 2025
$-15.99
$1.19
-17.2%
Peer comparison (GICS sub-industry)
Key metrics vs sector peers
Ticker
Market Cap
P/E
Rev YoY
Net Margin
ROE
Gross Margin
ZSTK
$7M
-0.1
-0.53%
-335.6%
-319.0%
4.6%
ACH
—
—
—
—
—
—
MEDS
—
—
—
—
—
—
Full Fundamentals
All metrics by year — income statement, balance sheet, cash flow
Income Statement16
Annual Income Statement data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
Revenue
$36M
$36M
$76M
$33M
$9M
Cost of Revenue
$34M
$34M
$58M
$20M
$7M
Gross Profit
$2M
$2M
$18M
$13M
$2M
R&D Expense
·
$418.0K
$62.0K
$388.0K
$132.0K
SG&A Expense
$1M
$2M
$2M
$3M
$922.0K
Operating Expenses
$156M
$11M
$68M
$60M
$21M
Operating Income
$-155M
$-9M
$-50M
$-47M
$-19M
Interest Income
·
$213.0K
$94.0K
$4.0K
$78.0K
Pretax Income
$-115M
$-9M
$-48M
$-48M
$-21M
Income Tax
$59.0K
$22.0K
$-2M
$-1M
$-98.0K
Net Income
$-120M
$-16M
$-57M
$-52M
$-21M
EPS (Basic)
$-43.49
$-50.02
$-7.75
$-13.68
·
EPS (Diluted)
$-43.49
$-50.02
$-7.75
$-13.68
·
Shares (Basic)
2,753
318
7,356
3,832
·
Shares (Diluted)
2,753
318
7,356
3,832
·
EBITDA
$-154M
$-15M
$-48M
·
·
Balance Sheet28
Annual Balance Sheet data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
Cash & Equivalents
$6M
$5M
$4M
$9M
$38M
Receivables
$799.0K
$2M
$4M
$5M
$5M
Inventory
$2M
$2M
$9M
$9M
$3M
Prepaid Expense
$323.0K
$13.0K
$1M
$805.0K
$2M
Current Assets
$9M
$20M
$21M
$31M
$48M
PP&E (Net)
$128.0K
$81.0K
$847.0K
$1M
$4M
PP&E (Gross)
$255.0K
$172.0K
$1M
$1M
$4M
Accum. Depreciation
$127.0K
$91.0K
$262.0K
$208.0K
$223.0K
Goodwill
·
$2M
$0
$23M
$20M
Intangibles
·
$3M
$946.0K
$18M
$10M
Other Non-current Assets
$55.0K
$35.0K
$80.0K
$263.0K
·
Total Assets
$130M
$26M
$24M
$81M
$85M
Accounts Payable
$2M
$4M
$5M
$8M
$2M
Accrued Liabilities
$1M
·
·
·
·
Current Liabilities
$9M
$19M
$16M
$17M
$6M
Capital Leases
$279.0K
$122.0K
$942.0K
$2M
$908.0K
Deferred Tax
$9.0K
$0
$0
$2M
$2M
Other Non-current Liabilities
·
·
$942.0K
·
$2M
Total Liabilities
$60M
$22M
$17M
$25M
$9M
Long-term Debt
$53M
$2M
·
·
·
Total Debt
$53M
$2M
$2M
·
·
Common Stock
$0
$0
$0
$0
·
Paid-in Capital
$348M
$163M
$149M
$150M
$117M
Retained Earnings
$-278M
$-158M
$-143M
$-91M
$-39M
AOCI
$180.0K
$-221.0K
$-140.0K
$-3M
$-1M
Stockholders' Equity
$71M
$5M
$6M
$56M
$77M
Liabilities + Equity
$130M
$26M
$24M
$81M
$85M
Shares Outstanding
1,046,000
478,000
8,935,000
6,776,000
65,517
Cash Flow14
Annual Cash Flow data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
D&A
$582.0K
$768.0K
$2M
$3M
$501.0K
Stock-based Comp
$1M
$3M
$2M
$3M
$1M
Deferred Tax
$56.0K
$22.0K
$-2M
$-1M
$-128.0K
Amort. of Intangibles
·
$642.0K
$2M
$2M
·
Other Non-cash
$109M
$8M
$46M
·
·
Operating Cash Flow
$-9M
$-5M
$-8M
$-16M
$-21M
CapEx
$127.0K
$134.0K
$163.0K
$1M
$4M
Investing Cash Flow
$-3M
$203.0K
$-234.0K
$-16M
$-15M
Stock Issued
$16M
$8M
$3M
$5M
$43M
Stock Repurchased
·
·
$0
$255.0K
$0
Net Stock Activity
$16M
$8M
$3M
·
·
Financing Cash Flow
$11M
$6M
$3M
$4M
$58M
Net Change in Cash
$373.0K
$2M
$-5M
$-28M
$22M
Free Cash Flow
$-9M
$-5M
$-9M
·
·
Profitability8
Annual Profitability data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
Gross Margin
4.6%
21.0%
23.3%
·
·
Operating Margin
-433.5%
-26.3%
-66.2%
·
·
Net Margin
-335.6%
-26.7%
-75.0%
·
·
Pretax Margin
-323.3%
-27.0%
-63.5%
·
·
EBITDA Margin
-431.9%
-25.0%
-62.9%
·
·
ROA
-153.1%
-63.8%
-109.0%
·
·
ROE
-319.0%
-291.5%
-190.1%
·
·
ROIC
-124.7%
-234.8%
-583.8%
·
·
Liquidity & Solvency4
Annual Liquidity & Solvency data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
Current Ratio
1.0
1.0
1.3
·
·
Quick Ratio
0.7
0.5
0.5
·
·
Debt / Equity
0.8
0.5
0.3
·
·
LT Debt / Equity
0.7
·
·
·
·
Efficiency3
Annual Efficiency data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
Asset Turnover
0.5
2.4
1.5
·
·
Inventory Turnover
16.5
6.6
6.8
·
·
Receivables Turnover
30.2
17.0
16.5
·
·
Per Share5
Annual Per Share data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
Book Value / Share
$67.45
$0.24
$0.72
·
·
Revenue / Share
$12958.95
$4850.82
$10341.35
·
·
Cash Flow / Share
$-3151.47
$-410.21
$-1141.38
·
·
Cash / Share
$5.35
$0.33
$0.49
·
·
EPS (TTM)
$-43.49
$-50.02
$-7.75
$-13.68
·
Growth Rates2
Annual Growth Rates data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
Revenue YoY
-0.53%
-52.8%
127.8%
271.9%
·
Revenue CAGR 3Y
2.2%
58.7%
·
·
·
Valuation (TTM)14
Annual Valuation (TTM) data for ZSTK
Metric
Trend
2025
2024
2023
2022
2021
Revenue TTM
$36M
$36M
$76M
$33M
·
Net Income TTM
$-120M
$-16M
$-57M
$-52M
·
Market Cap
$7M
$744M
·
·
·
Enterprise Value
$54M
$740M
·
·
·
P/E
-0.1
-0.8
·
·
·
P/S
0.2
20.7
·
·
·
P/B
0.1
164.9
·
·
·
P / Tangible Book
0.1
·
·
·
·
P / Cash Flow
-0.8
-147.8
·
·
·
P / FCF
-0.7
-143.9
·
·
·
EV / EBITDA
-0.4
-49.7
·
·
·
EV / FCF
-6.2
-143.2
·
·
·
EV / Revenue
1.5
20.6
·
·
·
Earnings Yield
-694.7%
-124.5%
·
·
·
Income Statement17
Quarterly Income Statement data for ZSTK
Metric
Trend
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Q3 2022
Revenue
$14M
$7M
$-654.0K
$10M
$10M
$7M
$-5M
$7M
$16M
$18M
$18M
$17M
$21M
$19M
$10M
$10M
Cost of Revenue
$12M
$4M
$4M
$9M
$9M
$6M
$233.0K
$7M
$13M
$14M
$14M
$12M
$18M
$14M
$7M
$5M
Gross Profit
$2M
$3M
$-4M
$335.0K
$619.0K
$535.0K
$-5M
$495.0K
$3M
$4M
$3M
$5M
$4M
$5M
$3M
$5M
R&D Expense
·
·
·
·
$73.0K
$113.0K
·
$118.0K
$62.0K
$47.0K
$25.0K
$8.0K
$13.0K
$16.0K
$-12.0K
$79.0K
SG&A Expense
·
·
$-312.0K
$473.0K
$760.0K
$470.0K
$491.0K
$409.0K
$587.0K
$442.0K
$269.0K
$340.0K
$685.0K
$352.0K
$321.0K
$956.0K
Operating Expenses
$26M
$66M
$143M
$4M
$2M
$2M
$-5M
$3M
$7M
$6M
$11M
$5M
$44M
$8M
$16M
$9M
Operating Income
$-24M
$-63M
$-148M
$-3M
$-2M
$-2M
$-786.0K
$-2M
$-4M
$-2M
$-7M
$-540.0K
$-40M
$-2M
$-14M
$-4M
Interest Expense
$89.0K
$66.0K
·
$61.0K
$96.0K
$51.0K
·
·
·
·
·
·
·
·
·
·
Interest Income
·
·
·
·
·
·
·
$27.0K
$-25.0K
$22.0K
$25.0K
$15.0K
$31.0K
$23.0K
$-141.0K
$76.0K
Pretax Income
$-24M
$-37M
$-109M
$-4M
$-2M
$-253.0K
$-994.0K
$-2M
$-3M
$-3M
$-8M
$579.0K
$-38M
$-3M
$-11M
$-7M
Income Tax
$258.0K
$-9.0K
$51.0K
$18.0K
$7.0K
$88.0K
$-5.0K
$-66.0K
$-35.0K
$128.0K
$-380.0K
$-51.0K
$-1M
$-78.0K
$-1M
$0
Net Income
$-25M
$-37M
$-110M
$-7M
$-2M
$-758.0K
$-6M
$-4M
$-3M
$-3M
$-10M
$1M
$-44M
$-4M
$-13M
$-7M
EPS (Basic)
$-2.47
$-3.68
$-34.29
$-9.05
$-4.27
$-1.54
$-38.40
$-11.03
$-0.21
$-0.38
$-0.77
$0.18
$-6.58
$-0.58
$-3.03
$-1.93
EPS (Diluted)
$-2.47
$-3.68
$-34.29
$-9.05
$-4.27
$-1.54
$-38.40
$-11.03
$-0.21
$-0.38
$-0.75
$0.16
$-6.58
$-0.58
$-3.03
$-1.93
Shares (Basic)
9,961
9,958
-38,501
736
565
492
-21,218
342
12,278
8,916
-12,950
6,940
6,726
6,640
115
3,831
Shares (Diluted)
9,961
9,958
-38,501
736
565
492
-21,218
342
12,278
8,916
-13,647
7,637
6,726
6,640
115
3,831
EBITDA
$-24M
$-63M
·
$-3M
$-3M
$-795.0K
·
$-4M
$-4M
$-2M
·
$-540.0K
$-40M
$-2M
·
·
Balance Sheet28
Quarterly Balance Sheet data for ZSTK
Metric
Trend
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Q3 2022
Cash & Equivalents
$3M
$2M
$6M
$13M
$1M
$4M
$5M
$4M
$6M
$4M
$4M
$5M
$2M
$5M
$9M
·
Receivables
$927.0K
$783.0K
$799.0K
$2M
$5M
$4M
$2M
$4M
$3M
$3M
$4M
$4M
$5M
$7M
$5M
·
Inventory
$2M
$2M
$2M
$2M
$5M
$5M
$2M
$8M
$7M
$9M
$9M
$11M
$9M
$10M
$9M
·
Prepaid Expense
$4M
$2M
$323.0K
$92.0K
$661.0K
$665.0K
$13.0K
$1M
$1M
$1M
$1M
$957.0K
$2M
$2M
$805.0K
·
Current Assets
$11M
$11M
$9M
$18M
$13M
$13M
$20M
$21M
$21M
$22M
$21M
$24M
$22M
$28M
$31M
·
PP&E (Net)
$115.0K
$120.0K
$128.0K
$151.0K
$414.0K
$354.0K
$81.0K
$518.0K
$806.0K
$786.0K
$847.0K
$900.0K
$951.0K
$5M
$1M
·
PP&E (Gross)
$248.0K
$250.0K
$255.0K
$274.0K
$763.0K
$680.0K
$172.0K
$905.0K
$1M
$1M
$1M
$1M
$1M
$6M
$1M
·
Accum. Depreciation
$133.0K
$130.0K
$127.0K
$123.0K
$349.0K
$326.0K
$91.0K
$387.0K
$370.0K
$331.0K
$262.0K
$230.0K
$185.0K
$771.0K
$208.0K
·
Goodwill
·
·
·
·
$5M
$5M
·
$2M
$2M
·
$0
$0
$0
$23M
$23M
·
Intangibles
·
·
·
·
$3M
$3M
·
$4M
$4M
$908.0K
$946.0K
$5M
$6M
$17M
$18M
·
Other Non-current Assets
$55.0K
$55.0K
$55.0K
$56.0K
$165.0K
$106.0K
$35.0K
$102.0K
$101.0K
$103.0K
$80.0K
$285.0K
$263.0K
·
$263.0K
·
Total Assets
$25M
$45M
$130M
$74M
$23M
$22M
$26M
$29M
$30M
$24M
$24M
$32M
$30M
$77M
$81M
·
Accounts Payable
$2M
$2M
$2M
$3M
$4M
$4M
$4M
$7M
$5M
$5M
$5M
$7M
$7M
$6M
$8M
·
Accrued Liabilities
·
·
$1M
·
·
·
·
·
·
·
·
·
·
·
·
·
Current Liabilities
$11M
$8M
$9M
$9M
$14M
$13M
$19M
$21M
$18M
$19M
$16M
$17M
$18M
$15M
$17M
·
Capital Leases
$228.0K
$251.0K
$279.0K
$307.0K
$2M
$2M
$122.0K
$2M
$2M
$2M
$942.0K
$1M
$1M
$2M
$2M
·
Deferred Tax
$0
$0
$9.0K
$28.0K
$876.0K
$870.0K
$0
$971.0K
$1M
·
$0
$481.0K
$523.0K
$2M
$2M
·
Other Non-current Liabilities
·
·
·
·
·
·
·
·
·
·
·
·
·
$2M
·
·
Total Liabilities
$11M
$8M
$60M
$9M
$19M
$18M
$22M
$24M
$22M
$21M
$17M
$18M
$20M
$23M
$25M
·
Long-term Debt
$2M
$3M
$53M
$3M
$3M
$2M
$2M
·
·
·
·
·
·
·
·
·
Total Debt
$2M
$3M
·
$3M
$3M
$2M
·
$2M
$2M
$3M
·
$1M
$1M
$1M
·
·
Common Stock
$0
$0
$0
$0
$0
$0
$0
$0
$0
$0
$0
$0
$0
$0
$0
·
Paid-in Capital
$353M
$351M
$348M
$233M
$165M
$164M
$163M
$156M
$156M
$149M
$149M
$150M
$151M
$150M
$150M
·
Retained Earnings
$-339M
$-314M
$-278M
$-168M
$-161M
$-159M
$-158M
$-152M
$-148M
$-146M
$-143M
$-134M
$-138M
$-94M
$-91M
·
AOCI
$203.0K
$187.0K
$180.0K
$196.0K
$251.0K
$-196.0K
$-221.0K
$185.0K
$-132.0K
$-113.0K
$-140.0K
$-2M
$-2M
$-2M
$-3M
·
Stockholders' Equity
$14M
$37M
$71M
$65M
$4M
$5M
$5M
$4M
$7M
$3M
$6M
$14M
$11M
$54M
$57M
·
Liabilities + Equity
$25M
$45M
$130M
$74M
$23M
$22M
$26M
$29M
$30M
$24M
$24M
$32M
$30M
$77M
$81M
·
Shares Outstanding
2,430,000
2,430,000
1,046,000
712,000
22,569,000
19,436,000
478,000
13,367,000
13,367,000
8,981,000
8,935,000
8,216
6,859,000
136,938
6,776,000
·
Cash Flow14
Quarterly Cash Flow data for ZSTK
Metric
Trend
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Q3 2022
D&A
$4.0K
$4.0K
$4.0K
$201.0K
$195.0K
$182.0K
$211.0K
$226.0K
$257.0K
$74.0K
$292.0K
$306.0K
$944.0K
$942.0K
$648.0K
$635.0K
Stock-based Comp
$2M
$3M
$323.0K
$541.0K
$172.0K
$172.0K
$2M
$406.0K
$12.0K
$10.0K
$595.0K
$4.0K
$338.0K
$654.0K
$453.0K
$162.0K
Amort. of Intangibles
·
·
·
·
$100.0K
$161.0K
·
$200.0K
$200.0K
$100.0K
$219.0K
$300.0K
$800.0K
$800.0K
$541.0K
$500.0K
Other Non-cash
·
$30M
·
·
·
$-2M
·
·
·
$2M
·
·
·
$-2M
·
·
Operating Cash Flow
$1M
$-4M
$-3M
$100.0K
$-3M
$-3M
$-1M
$-2M
$-265.0K
$-1M
$-1M
$518.0K
$-3M
$-4M
$-963.0K
$-4M
CapEx
$0
$0
$29.0K
$9.0K
$65.0K
$24.0K
$0
$20.0K
$26.0K
$88.0K
$-38.0K
$6.0K
$93.0K
$102.0K
$345.0K
$226.0K
Investing Cash Flow
$0
$0
$-3M
$-11.0K
$-1M
$370.0K
$0
$236.0K
$55.0K
$-88.0K
$38.0K
$-77.0K
$-93.0K
$-102.0K
$385.0K
$-7.0K
Stock Issued
$0
$115.0K
$1M
$13M
$1M
$0
$4M
$0
·
·
$0
$3M
·
·
$5M
·
Stock Repurchased
·
·
·
·
·
·
·
·
·
·
·
$0
·
·
$0
$5.0K
Net Stock Activity
·
$115.0K
·
·
·
·
·
·
·
·
·
·
·
·
·
·
Financing Cash Flow
$-727.0K
$571.0K
$-719.0K
$11M
$2M
$0
$3M
$-257.0K
$2M
$-1M
$704.0K
$2M
$131.0K
$-19.0K
$5M
$-71.0K
Net Change in Cash
$662.0K
$-3M
$-8M
$12M
$-2M
$-2M
$2M
$-2M
$2M
$-194.0K
$-413.0K
$3M
$-3M
$-4M
$4M
$-4M
Free Cash Flow
·
$-4M
·
·
·
$-3M
·
·
·
$-1M
·
·
·
$-4M
·
·
Levered FCF
·
$-4M
·
·
·
·
·
·
·
·
·
·
·
·
·
·
Profitability8
Quarterly Profitability data for ZSTK
Metric
Trend
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Q3 2022
Gross Margin
11.8%
43.2%
·
3.4%
19.1%
24.5%
·
22.8%
20.2%
21.4%
·
28.5%
18.4%
27.2%
·
·
Operating Margin
-177.4%
-861.3%
·
-33.5%
-17.3%
-8.3%
·
-29.6%
-22.6%
-13.8%
·
-3.1%
-186.7%
-15.3%
·
·
Net Margin
-180.2%
-504.0%
·
-68.3%
-16.3%
-6.4%
·
-30.3%
-16.8%
-18.7%
·
7.1%
-207.6%
-19.4%
·
·
Pretax Margin
-178.3%
-504.1%
·
-37.0%
-16.6%
-6.1%
·
-31.8%
-17.2%
-18.0%
·
3.3%
-177.6%
-19.8%
·
·
EBITDA Margin
-177.4%
-861.3%
·
-33.5%
-17.3%
-6.8%
·
-29.6%
-22.6%
-13.4%
·
-3.1%
-186.7%
-10.6%
·
·
ROA
-102.9%
-108.5%
·
-12.9%
-9.2%
-3.2%
·
-12.4%
-8.7%
-6.7%
·
7.8%
-292.4%
-10.1%
·
·
ROE
-275.9%
-176.4%
·
-19.2%
-42.6%
-19.2%
·
-40.6%
-28.8%
-11.8%
·
17.3%
-815.0%
-14.4%
·
·
ROIC
-150.9%
-156.8%
·
-4.9%
-35.4%
-14.2%
·
-54.6%
-35.9%
-41.5%
·
-3.8%
-320.5%
-5.5%
·
·
Liquidity & Solvency5
Quarterly Liquidity & Solvency data for ZSTK
Metric
Trend
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Q3 2022
Current Ratio
0.9
1.4
·
2.1
1.0
1.0
·
1.0
1.2
1.1
·
1.4
1.2
1.8
·
·
Quick Ratio
0.3
0.3
·
1.8
0.5
0.6
·
0.4
0.5
0.4
·
0.5
0.4
0.8
·
·
Debt / Equity
0.2
0.1
·
0.0
0.8
0.5
·
0.5
0.3
1.0
·
0.1
0.1
0.0
·
·
LT Debt / Equity
0.0
0.0
·
0.0
0.1
0.1
·
·
·
·
·
·
·
·
·
·
Interest Coverage
·
-949.3
·
·
·
·
·
·
·
·
·
·
·
·
·
·
Efficiency3
Quarterly Efficiency data for ZSTK
Metric
Trend
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Q3 2022
Asset Turnover
0.6
0.2
·
0.2
0.6
0.5
·
0.4
0.5
0.4
·
1.1
1.4
0.5
·
·
Inventory Turnover
3.8
1.3
·
1.8
2.1
1.3
·
1.0
1.6
1.4
·
2.3
4.0
2.8
·
·
Receivables Turnover
4.5
3.0
·
3.1
3.5
3.2
·
3.3
3.9
3.6
·
9.8
8.8
6.0
·
·
Per Share5
Quarterly Per Share data for ZSTK
Metric
Trend
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Q3 2022
Book Value / Share
$5.69
$15.14
·
$91.18
$0.18
$0.24
·
$0.32
$0.55
$0.35
·
$1743.31
$1.59
$394.72
·
·
Revenue / Share
$1371.15
$730.47
·
$13244.57
$689.66
$618.23
·
$933.50
$1277.33
$2022.32
·
$2267.51
$3190.60
·
·
·
Cash Flow / Share
·
$-386.32
·
·
·
$-143.10
·
·
·
$-150.29
·
·
·
·
·
·
Cash / Share
$1.09
$0.81
·
$18.40
$0.07
$0.19
·
$0.31
$0.46
$0.46
·
$579.72
$0.26
$38.40
·
·
EPS (TTM)
$-19.47
$-14.38
·
$-20.23
$-11.39
$-11.66
·
$-11.46
$-7.01
$-7.38
·
$-8.93
$-15.51
·
·
·
Valuation (TTM)14
Quarterly Valuation (TTM) data for ZSTK
Metric
Trend
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Q3 2022
Revenue TTM
$40M
$39M
·
$44M
$50M
$53M
·
$58M
$72M
$76M
·
$68M
$59M
$43M
·
·
Net Income TTM
$-70M
$-46M
·
$-14M
$-10M
$-11M
·
$-9M
$-49M
$-50M
·
$-54M
$-80M
$-44M
·
·
Market Cap
$7M
$15M
·
$12M
$511M
$459M
·
$798M
$532M
$809M
·
·
·
·
·
·
Enterprise Value
$7M
$16M
·
$2M
$512M
$457M
·
$796M
$528M
$808M
·
·
·
·
·
·
P/E
-0.2
-0.4
·
-0.9
-2.0
-2.0
·
-5.2
-5.7
-12.2
·
·
·
·
·
·
P/S
0.2
0.4
·
0.3
10.3
8.7
·
13.7
7.3
10.6
·
·
·
·
·
·
P/B
0.5
0.4
·
0.2
126.9
96.4
·
187.7
72.8
257.8
·
·
·
·
·
·
P / Tangible Book
0.5
0.4
·
0.2
·
·
·
·
539.8
362.8
·
·
·
·
·
·
P / Cash Flow
·
-3.9
·
·
·
-168.1
·
·
·
-603.8
·
·
·
·
·
·
P / FCF
·
-3.9
·
·
·
-166.6
·
·
·
-566.6
·
·
·
·
·
·
EV / EBITDA
-0.3
-0.3
·
-0.6
-199.6
-575.3
·
-215.5
-149.2
-335.1
·
·
·
·
·
·
EV / FCF
·
-4.2
·
·
·
-166.2
·
·
·
-565.8
·
·
·
·
·
·
EV / Revenue
0.2
0.4
·
0.0
10.3
8.7
·
13.7
7.3
10.6
·
·
·
·
·
·
Earnings Yield
-649.0%
-232.7%
·
-117.1%
-50.3%
-49.4%
·
-19.2%
-17.6%
-8.2%
·
·
·
·
·
·
Financial Statements
Income statement, balance sheet, cash flow — annual, last 5 years
Income Statement
2025-12-31
2024-12-31
2023-12-31
2022-12-31
2021-12-31
Revenue
$36M
$36M
$76M
$33M
$9M
Gross Margin %
4.6%
21.0%
23.3%
—
—
Operating Margin %
-433.5%
-26.3%
-66.2%
—
—
Net Income
$-120M
$-16M
$-57M
$-52M
$-21M
Diluted EPS
$-43.49
$-50.02
$-7.75
$-13.68
—
Balance Sheet
2025-12-31
2024-12-31
2023-12-31
2022-12-31
2021-12-31
Debt / Equity
0.8
0.5
0.3
—
—
Current Ratio
1.0
1.0
1.3
—
—
Quick Ratio
0.7
0.5
0.5
—
—
Cash Flow
2025-12-31
2024-12-31
2023-12-31
2022-12-31
2021-12-31
Free Cash Flow
$-9M
$-5M
$-9M
—
—
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Institutional owners (13F)
13 filers · $172K total · As of June 30, 2026
Institutions that report holding this stock in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
Institutional activity — Q2 2026 vs prior quarter
New positions
Exited positions
Increased
Decreased
Net shares change
6
1
2
1
—
Compared to Q1 2026. SEC Form 13F filings are due within 45 days of quarter-end plus a short buffer for late filers — quarters still inside that window are skipped in favor of the most recent fully-reported pair. Change vs prior quarter not shown: filer coverage differs too much between these two quarters for a reliable comparison.
Insiders from SEC Form 3/4/5 filings; net = open-market P/S only
Activists & 5%+ owners
7 positions
Investors who filed SEC Schedule 13D — beneficial ownership above 5% with an intent to influence the issuer (activist stakes, board campaigns, M&A). Each row shows the most recent known state of that filer's position.
Purpose is an automated classification of the filer's own stated purpose (SEC Item 4) — not investment advice. "—" means no clear purpose was stated or the text could not be classified.
ETF ownership
Held by 1 ETF
Weight reflects direct equity holdings (N-PORT) only; leveraged or derivative-based funds may hold additional swap exposure not shown.