GCTK Stock Snapshot Price, market cap, P/E, EPS, ROE, debt/equity, 52-week range

03
Price $1.21
Market Cap (MRQ) $8M
P/E 0.0
EPS $31.22
ROE -399.4%
52W Range $1–$136

GCTK Stock Price Chart Daily OHLCV with technical indicators — pan, zoom, and customize your view

04
range
bars

Bar granularity adapts to the selected period — hover the chart to see open/high/low/close for a bar.

Stock splits 5
Ex-date Split Type
Aug. 31, 2026 1-for-15 Reverse
June 16, 2025 1-for-60 Reverse
Feb. 4, 2025 1-for-20 Reverse
May 20, 2024 1-for-5 Reverse
Aug. 13, 2021 1-for-13 Reverse

10-Year Performance Revenue, net income, margins and EPS trends

06
Revenue·
2016-12-31 → 2019-12-31
EPS$31.22
2016-12-31 → 2025-12-31
Free Cash Flow$-15M
2016-12-31 → 2025-12-31
Net margin·
2016-12-31 → 2019-12-31
Valuation & Ratios 07–12

Valuation P/E, P/S, P/B, EV/EBITDA ratios — is the stock expensive or cheap?

Metric 5Y trend GCTK 5Y avg Peer Median Verdict
P/E 0.05Y avg ≈25089.9 ≈25089.9 · ·
P/S 9.45Y avg ≈351254.6 ≈351254.6 · ·
P/B (MRQ) -4.45Y avg ≈29215.4 ≈29215.4 · ·
Price / FCF -0.15Y avg ≈-11728.5 ≈-11728.5 · ·
Price / Cash Flow -0.15Y avg ≈-10050.8 ≈-10050.8 · ·
Price / Tangible Book 0.45Y avg ≈47971.8 ≈47971.8 · ·
PEG Ratio ≈0.0 · · ·

Peer median is calculated on a standardized basis per metric and may not always match the TTM/MRQ basis shown for this stock.

value · ≈ 5Y avg · industry median · verdict relative to median

Full Fundamentals All metrics by year — income statement, balance sheet, cash flow

15
Income Statement 14
Metric Trend 202520242023202220212020201920182017201620152014
Revenue ······$208.0K$43.5K$589.5K$611.7K$143.2K$59.8K
R&D Expense $10M$9M$5M$2M$2M$2M$2M$3M$3M$3M$2M$2M
SG&A Expense $6M$5M$2M$2M$2M$415.0K$2M$2M$6M$1M$1M$230.8K
Operating Expenses $16M$15M$7M$4M$4M$3M$4M$7M$11M$6M$5M$4M
Operating Income $-16M$-15M$-7M$-4M$-4M$-3M$4M$-7M$11M$-6M$-5M$-4M
Interest Expense ·$44.0K··········
Other Non-op $26.0K$14.0K·$-14.0K$-53.0K$338.0K$10.5K$176.8K$247.0K···
Pretax Income ·····$-3M$-4M$-7M$-10M$-5M$-6M$3M
Net Income $-19M$-23M$-7M$-4M$-4M$-3M$4M$-7M$10M$-5M$-6M$3M
EPS (Basic) $31.22$4106.00$34.18$0.29$0.26$-0.02$-0.02$-4.74$-1.87$-1.08$-1.15$0.37
EPS (Diluted) $31.22$4106.00$34.18$0.29$0.26$0.19$-0.02$-4.74$-1.87$-1.08$-1.15$0.37
Shares (Basic) 621,0945,503207,60315,474,60015,450,824196,029,360154,929,0648,396,8476,285,3245,788,8425,476,8705,304,500
Shares (Diluted) 621,0945,503207,60315,474,600·196,029,360154,929,0648,396,8476,285,3245,788,8425,476,8705,349,242
EBITDA $-16M$-15M$-7M$-4M··$-4M$7M$-11M$-6M·$-4M
Balance Sheet 22
Metric Trend 202520242023202220212020201920182017201620152014
Cash & Equivalents $7M$6M$4M$2M$6M$10M$419.0K$97.1K$53.8K$148.8K$608.7K$6M
Receivables ·····$66.0K$70.0K$22.8K$121.8K$92.1K$18.4K$23.2K
Inventory ·····$284.0K$184.0K$171.0K$957.3K$1M$816.2K$83.7K
Prepaid Expense ······$23.3K$13.6K$30.3K$90.6K$57.2K$46.1K
Other Current Assets $284.0K$151.0K$376.0K$67.0K$43.0K$56.0K$45.0K$23.3K$94.1K$357.0K$268.8K$113.8K
Current Assets $8M$6M$5M$2M$6M$10M$718.0K$314.1K$1M$2M$2M$6M
PP&E (Net) $138.0K$95.0K$27.0K$40.0K$69.0K$149.0K$134.0K$149.8K$216.7K$240.5K$220.5K$122.5K
PP&E (Gross) ···$294.0K$489.0K$774.0K$669.0K$594.8K$637.4K$556.6K$473.5K$331.5K
Accum. Depreciation ···$254.0K$420.0K$625.0K$535.0K$445.0K$420.6K$316.2K$253.0K$209.0K
Total Assets $8M$6M$5M$2M$6M$11M$1M$688.2K$2M$2M$2M$6M
Accounts Payable $1M$992.0K$839.0K$672.0K$631.0K$869.0K$2M$2M$2M$2M$1M$104.7K
Accrued Liabilities ···$325.0K$131.0K$148.0K$401.0K$917.4K$929.2K$349.8K$187.5K$235.9K
Current Liabilities $5M$1M$2M$1M$883.0K$1M$2M$3M$4M$2M$2M$1M
Capital Leases $5.0K$33.0K··$17.0K$82.0K$45.0K·····
Other Non-current Liabilities $231.0K$203.0K$196.0K$195.0K········
Total Liabilities $5M$19M$2M$1M$1M$2M$3M$4M$5M$3M$2M$3M
Common Stock $1.0K$1.0K·$15.0K$15.0K$15.0K$162.0K$141.6K$6.8K$6.0K$5.7K$5.3K
Retained Earnings $-152M$-132M$-110M$-102M$-97M$-93M$-91M$-87M$-47M$-36M$-29M$-23M
AOCI $41.0K$-8.0K$16.0K$17.0K$-6.0K$15.0K$124.0K$164.2K$110.7K$62.6K$90.2K$66.7K
Stockholders' Equity $3M$-13M$3M$1M$5M$9M$-1M$-3M$-17M$-11M$-7M$-5M
Liabilities + Equity $8M$6M$5M$2M$6M$11M$1M$688.2K$2M$2M$2M$6M
Shares Outstanding 910,68813,409208,91415,500,73015,470,40215,444,697161,858,436141,634,7006,821,7926,026,5275,690,0975,323,058
Cash Flow 10
Metric Trend 202520242023202220212020201920182017201620152014
D&A ····$32.0K$32.0K······
Stock-based Comp $211.0K$173.0K$281.0K$439.0K$223.0K$22.0K$356.0K$705.2K$3M$70.2K$18.0K$50.4K
Operating Cash Flow $-15M$-12M$-7M$-4M$-4M$-4M$-4M$-5M$-6M$-5M$-5M$-3M
CapEx $96.0K$104.0K·$1.0K$5.0K$53.0K$23.0K$5.4K$19.5K$76.5K$143.7K$63.5K
Investing Cash Flow $-96.0K$-104.0K·$1.0K$-1.0K$-53.0K$-23.0K$-5.4K$-19.5K$-76.5K$-203.2K·
Stock Issued ·····$13M$4M$3M$205.4K···
Net Stock Activity ······$4M$3M$205.4K···
Financing Cash Flow $17M$14M$9M··$13M$4M$5M$6M$5M$-460.9K·
Net Change in Cash $2M$1M$2M$-4M$-4M$9M$326.0K$56.3K$-91.2K$-459.9K$-5M$3M
Free Cash Flow $-15M$-13M·$-4M··$-4M$-5M$-6M$-5M·$-3M
Profitability 6
Metric Trend 202520242023202220212020201920182017201620152014
Operating Margin ······-1679.2%15035.4%-1794.2%-924.6%·-6034.9%
Net Margin ······-1684.3%15442.0%-1752.2%-884.4%·4986.1%
Pretax Margin ······-1684.3%-15442.0%-1752.2%-884.4%·4986.1%
EBITDA Margin ······-1679.2%15035.4%-1794.2%-924.6%·-6034.9%
ROA -281.6%-417.0%-193.3%-101.9%··-356.8%569.8%-500.2%-235.5%·65.5%
ROE -399.4%265.5%-162.1%-237.8%··309.2%-71.2%75.0%60.4%·-37.5%
Liquidity & Solvency 3
Metric Trend 202520242023202220212020201920182017201620152014
Current Ratio 1.64.53.22.3··0.30.10.30.9·6.0
Quick Ratio 1.54.43.02.3··0.20.00.00.1·5.9
Interest Coverage ·-330.6··········
Efficiency 2
Metric Trend 202520242023202220212020201920182017201620152014
Asset Turnover ······0.20.00.30.3·0.0
Receivables Turnover ······4.50.65.511.1·5.1
Per Share 5
Metric Trend 202520242023202220212020201920182017201620152014
Book Value / Share $3.11$-16.42$0.15$0.08··$-0.01$-0.02$-2.43$-1.82·$-0.91
Revenue / Share ······$0.00$0.01$0.09$0.11·$0.01
Cash Flow / Share $-24.54$-37.83$-0.32···$-0.03$-0.58$-0.94$-0.92·$-0.63
Cash / Share $8.11$7.10$0.21$0.15··$0.00$0.00$0.01$0.02·$1.09
EPS (TTM) $31.22$4106.00$34.18$0.29$0.26$0.19$-0.02$-4.74$-1.87$-1.08$-1.15$0.37
Growth Rates 3
Metric Trend 202520242023202220212020201920182017201620152014
EPS YoY -99.2%11912.9%11686.2%11.5%36.8%·······
EPS CAGR 3Y 375.7%2408.9%464.5%·········
EPS CAGR 5Y 177.4%···········
Valuation (TTM) 10
Metric Trend 202520242023202220212020201920182017201620152014
Revenue TTM $117.0K$117.0K$117.0K$117.0K$117.0K$117.0K$208.0K$43.5K$589.5K$611.7K$143.2K$59.8K
Net Income TTM $-19M$-23M$-7M$-4M$-4M$-3M$4M$-7M$10M$-5M$-6M$3M
Market Cap $4M$354M$32.84B$131.14B··$7.62T$5.52T$1.06T$1.18T·$2.49T
P/E 0.10.146.029172.496230.8145736.8-2340000.0-8227.8-83422.5-180555.6-237391.31264864.9
P/S 30.13029.3280791.81121167.0··36637846.9127017873.91805374.31921193.2·41676145.7
P/B 1.2-27.310272.9106614.8··-5398598.3-1922441.6-64205.4-107327.3·-515539.5
P / Tangible Book 1.2·10272.9106614.874998.3618974.4······
P / Cash Flow -0.2-28.4-5008.0-35166.6··-1954476.0-1129076.2-180522.1-221236.9·-741063.3
P / FCF -0.2-28.1·-35157.2··-1942800.6-1127838.0-179928.0-218097.7·-727334.0
Earnings Yield 806.7%917.3%2.2%0.00%0.00%0.00%0.00%-0.01%0.00%0.00%0.00%0.00%

Most recent period on the left · null values shown as ·

Financial Statements Income statement, balance sheet, cash flow — annual, last 5 years

16
Metric 2025-12-312024-12-312023-12-312022-12-312021-12-31
Net Income $-19M $-23M $-7M $-4M $-4M
Diluted EPS $31.22 $4106.00 $34.18 $0.29 $0.26

Institutional owners (13F) 19 filers · $116K total · As of June 30, 2026

17

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.

Holders 19
Value held $116K
New positions 9
Exited positions 3
Institutional activity — Q2 2026 vs prior quarter
New positions Exited positions Increased Decreased Net shares change
9 (+5 vs prior Q) 3 (+2 vs prior Q) 2 (-1 vs prior Q) 1 (+1 vs prior Q) +428K

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.

Institution Value Shares % of tracked 13F Type
JANE STREET GROUP, LLC $40,978 128,459 35.29% Shares
CITADEL ADVISORS LLC $25,370 79,530 21.85% Shares
Ikarian Capital, LLC $14,621 45,830 12.59% Shares
GEODE CAPITAL MANAGEMENT, LLC $10,911 34,207 9.40% Shares
GRANITE ISLANDS PRIVATE WEALTH, LLC $5,008 15,700 4.31% Shares
BOOTHBAY FUND MANAGEMENT, LLC $4,314 13,525 3.71% Shares
UBS Group AG $4,257 13,343 3.67% Shares
CITIGROUP INC $4,106 12,872 3.54% Shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP $3,364 10,546 2.90% Shares
ALERUS FINANCIAL NA $1,276 4,000 1.10% Shares
Tower Research Capital LLC (TRC) $1,098 3,442 0.95% Shares
BARCLAYS PLC $402 1,259 0.35% Shares
PlanVest Financial, Inc $319 1,000 0.27% Shares
HRT FINANCIAL LP $65 205,442 0.06% Shares
Tradewinds Capital Management, LLC $16 50 0.01% Shares
NFSG Corp $11 34 0.01% Shares
Virtu Financial LLC $6 18,726 0.01% Shares
SBI Securities Co., Ltd. $3 9 0.00% Shares
OSAIC HOLDINGS, INC. $0 2 0.00% Shares

Activists & 5%+ owners 2 positions

18

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.

Filer Filed Stake Status Purpose Filing
Tax Identification Number JOHN A BALLANTYNE REV TRUST 08/01/2017, Tax Identification Number JOHN A BALLANTYNE Feb. 25, 2020 · Initial filing · SEC
Vayikra Capital, LLC, Philip Darivoff ×2 filings March 15, 2017 · Initial filing · SEC

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.

Company insiders 20 insiders · 6 officers · 14 directors

19
Insider Role Last activity Shares owned Buys 12m Sells 12m Net 12m
Paul Goode Chief Executive Officer March 25, 2025 J 339 0 0 $0
John A Graham Chief Executive Officer March 20, 2017 A · 0 0 $0
Avner Gal Chairman and CEO March 11, 2015 J 273,989 0 0 $0
Eran Hertz Chief Financial Officer Sept. 30, 2014 A · 0 0 $0
Angela Strand Boydston Interim Chief Strategy Officer June 1, 2017 A 4,445 0 0 $0
David Malka Vice President of Operations April 13, 2017 A 123,695 0 0 $0
Erin Catherine Carter Director Oct. 3, 2025 A 2,148 0 0 $0
Allen Danzig Director March 26, 2025 A 1,922 0 0 $0
Robert Fischell Director March 26, 2025 A 2,045 0 0 $0
John Ballantyne Director March 12, 2025 X 4,126 0 0 $0
Drew Sycoff Director July 1, 2024 P 2,951,258 0 0 $0
Michael Hauck Director June 1, 2017 A · 0 0 $0
Revan Schwartz Director June 1, 2017 A · 0 0 $0
Leslie Seff Director June 1, 2017 A 3,334 0 0 $0
Philip Darivoff Director March 8, 2017 P · 0 0 $0
Zvi Cohen Director March 11, 2015 J 241,625 0 0 $0
John A. Ballantyne Revocable Living Trust dated 08/01/2017 10% owner March 12, 2025 X 2,743,591 0 0 $0
Luis Malave · Oct. 3, 2025 A 4,058 0 0 $0
Andrew K Balo · Oct. 3, 2025 A 4,692 0 0 $0
David Podwalski · June 26, 2017 A · 0 0 $0

Insiders from SEC Form 3/4/5 filings; net = open-market P/S only

Peer comparison (GICS sub-industry) Key metrics vs sector peers

22

FY basis, prices as of each company's last fiscal year-end close.

Ticker Market Cap P/E Rev YoY Net Margin ROE Gross Margin
GCTK $4M 0.1 · · -399.4% ·
PFSA $129.4K -0.0 · · 47.5% ·
ABT $250.18B 33.7 5.7% 14.7% 13.1% ·

My Metrics Your personal watchlist — selected rows from Full Fundamentals

26

Pick the metrics that matter to you — click the + next to any row in Full Fundamentals above.

Your selection is saved and follows you across all tickers.

Source: SEC 10-Q filed Aug 14, 2026