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

03
Price $9.33
Market Cap (MRQ) $17M
P/E -3.2
EPS $-2.96
Revenue $8M
ROE -92.3%
52W Range $7–$15

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

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Stock splits 3
Ex-date Split Type
Aug. 12, 2025 1-for-50 Reverse
Aug. 31, 2022 1-for-25 Reverse
Sept. 27, 2010 1-for-10 Reverse

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

06
Revenue$8M
2017-06-30 → 2026-06-30
EPS$-2.96
2017-06-30 → 2026-06-30
Free Cash Flow$-14M
2018-06-30 → 2026-06-30
Net margin-111.7%
2018-06-30 → 2026-06-30
Valuation & Ratios 07–12

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

Metric 5Y trend PTN 5Y avg Peer Median Verdict
P/E -3.2 · · ·
P/S 2.2 · · ·
P/B (MRQ) 2.5 · · ·
Price / Cash Flow -1.2 · · ·
Price / Tangible Book 2.5 · · ·

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

Earnings History EPS actual vs estimate, surprise %, beat rate, next earnings date

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Avg Surprise 22.3%
Next Report Nov 11, 2026
PeriodReportEPS ActualEPS EstSurprise
Dec. 31, 2026 Sep 21, 2026 $-1.11 $-1.21 8.4%
June 30, 2026 $-1.11 $-1.21 8.4%
March 31, 2026 $-0.37 $-1.26 70.5%
Dec. 31, 2025 $-2.86 $-2.38 -20.3%
March 31, 2025 $-9.00 $-8.59 -4.8%
Dec. 31, 2024 $-6.00 $-21.21 71.7%

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

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Income Statement 17
Metric Trend 202620252024202320222021202020192018201720162015
Revenue $8M$0$4M$5M$1M$-188.6K$118.0K$60M$67M$67M$0·
Cost of Revenue ··$97.6K$418.5K$217.5K$147.8K$0·····
R&D Expense $12M$15M$22M$23M$21M$13M$14M$15M$33M$33M$43M$25M
SG&A Expense $9M$8M$12M$15M$17M$17M$10M$10M$9M$9M$6M$6M
Operating Expenses $22M$17M$27M$37M$38M$33M$-24M$25M$41M$41M$49M$30M
Operating Income $-9M$-17M$-22M$-32M$-37M$-33M$-24M$36M$26M$26M$-49M$-17M
Interest Expense ·$15.0K$17.1K$20.0K$29.7K$23.4K$20.1K$417.6K$1M$1M$3M$661.7K
Interest Income ·····$23.6K$1M$446.3K$310.7K$310.7K$50.2K$35.4K
Other Non-op $290.4K$152.6K$-7M$4M$390.1K$-212.4K$1M$28.7K$-1M$-1M$-2M$-910.9K
Pretax Income ···$-32M$-36M·······
Income Tax $-8M$-17M$-30M$-5M$0·$0$0$82.5K$82.5K$0$-531.5K
Net Income $-8M$-17M$-30M$-24M$-36M$-34M$-22M$36M$25M$25M$-52M$-18M
EPS (Basic) $-2.96$-32.15$-2.02$-2.21··$-0.10$0.17$0.12$0.12$-0.33$-0.15
EPS (Diluted) $-2.96$-32.15$-101.16···$-0.10$0.16$0.12$0.12$-0.33·
Shares (Basic) 2,827,233538,34814,697,09610,890,159··234,684,776207,670,607198,101,060198,101,060156,553,534·
Shares (Diluted) 2,827,233538,348293,951···234,684,776217,133,374207,007,538207,007,558156,553,534·
EBITDA $-9M$-17M$-22M$-32M$-36M$-33M$-24M$36M$26M·$-49M·
Balance Sheet 27
Metric Trend 202620252024202320222021202020192018201720162015
Cash & Equivalents $7M$3M$10M$11M$30M$60M$83M$44M$38M$40M$8M$27M
Short-term Investments ··$0$3M$0····$249.8K$1M$0
Receivables $300.8K·$0$3M$2M$2M$0$60M$0$15M$0·
Inventory ··$0$526.0K$944.5K$1M$0·····
Prepaid Expense $371.7K$325.7K$242.3K$2M$2M$3M$738.2K$637.3K$513.7K$1M$1M$2M
Other Current Assets ···········$182.3K
Current Assets $8M$3M$10M$16M$35M$66M$84M$104M$39M$57M$11M$29M
PP&E (Net) $118.1K$129.4K$388.4K$684.9K$539.3K$94.8K$140.2K$141.5K$164.0K$198.2K$97.8K$123.2K
PP&E (Gross) $4M$4M$4M$4M$3M$3M$3M$3M$3M$2M$2M$2M
Accum. Depreciation $4M$4M$3M$3M$3M$3M$2M$2M$2M$2M$2M$2M
Other Non-current Assets $21.6K$56.9K$56.9K$56.9K$56.9K$56.9K$56.9K$179.9K$338.9K$56.9K$63.2K$155.3K
Total Assets $9M$3M$11M$18M$36M$67M$85M$105M$39M$57M$11M$29M
Accounts Payable $1M$7M$4M$4M$3M$640.6K$715.7K$504.8K$2M$2M$713.9K$1M
Accrued Liabilities $504.2K$881.4K$4M$7M$7M$6M$3M$3M$2M$11M$8M$6M
Short-term Debt ·······$332.9K$6M$8M$5M$0
Current Liabilities $2M$8M$10M$15M$16M$11M$4M$4M$11M$55M$14M$7M
Capital Leases $65.4K$34.0K$163.8K$544.3K$529.4K$900.5K$953.3K$0·$0$14.3K$41.7K
Other Non-current Liabilities ··$0$2M$3M$6M$0$0$456.0K$754.0K$439.1K$91.3K
Total Liabilities $2M$8M$11M$20M$20M$18M$5M$4M$12M$62M$28M$17M
Total Debt ·······$332.9K$6M·$20M·
Common Stock $17.8K$9.3K$3.6K$116.6K$92.7K$92.0K$2M$2M$2M$2M$685.7K$571.3K
Paid-in Capital $474M$454M$442M$410M$404M$401M$396M$394M$357M$350M$325M$303M
Retained Earnings $-467M$-459M$-442M$-412M$-388M$-352M$-318M$-296M$-332M$-357M$-343M$-292M
AOCI ········$0$-590$-1.9K$0
Stockholders' Equity $7M$-5M$-111.5K$-2M$16M$50M$80M$101M$27M$-5M$-18M$12M
Liabilities + Equity $9M$3M$11M$18M$36M$67M$85M$105M$39M$57M$11M$29M
Shares Outstanding 1,779,275929,597358,53211,656,7149,270,9479,201,988229,258,400226,815,363200,554,205160,515,36168,568,05557,128,433
Cash Flow 15
Metric Trend 202620252024202320222021202020192018201720162015
D&A $62.7K$258.9K$339.1K$288.3K$126.7K$51.1K$64.2K$58.6K$56.6K$33.1K$43.1K$117.6K
Stock-based Comp $1M$1M$2M$2M$3M$3M$3M$3M$4M$2M$2M$1M
Deferred Tax ······$0$0$-500.0K$0$0·
Other Non-cash ····$34M$8M$61M$-61M$-26M·$2M·
Operating Cash Flow $-14M$-21M$-31M$-29M$-30M$-93.6K$41M$-22M$2M$13M$-47M$-13M
CapEx $51.3K·$42.5K$433.9K$261.4K$5.7K$62.9K$36.1K$22.5K$133.4K$17.7K$0
Investing Cash Flow $-51.3K$3M$12M$-3M$-261.4K$-5.7K$-62.9K$-36.1K$227.5K$991.6K$-1M$0
Debt Issued ········$0$0$10M$10M
Net Debt Issued ········$0·$10M·
Stock Issued $17M$8M$15M$11M$0·······
Net Stock Activity $17M$8M$15M$10M········
Financing Cash Flow $19M$11M$21M$11M$18.4K$-23M$-2M$27M$-4M$18M$29M$28M
Net Change in Cash ·····$-23M$39M$6M$-2M$32M$-19M$15M
Free Cash Flow $-14M$-21M$-32M$-29M$-243.0K$-23M$41M$-22M$2M·$-47M·
Levered FCF ···$-29M········
Profitability 7
Metric Trend 202620252024202320222021202020192018201720162015
Operating Margin -115.6%·-501.0%-668.8%-2491.6%17701.3%-20007.6%59.3%38.6%···
Net Margin -111.7%·-662.3%-567.4%-2465.1%17813.9%-19006.9%59.3%36.8%···
Pretax Margin ···-663.8%········
EBITDA Margin -115.6%·-501.0%-668.8%-2483.0%17674.2%-19953.2%59.4%38.7%···
ROA -142.1%-247.1%-207.4%-102.0%-70.0%-44.1%-23.6%49.8%51.5%·-255.2%·
ROE -92.3%310.0%-4052.8%-820.0%-163.2%-59.7%-26.9%61.4%132.8%·1921.9%·
ROIC ···-27723.0%········
Liquidity & Solvency 5
Metric Trend 202620252024202320222021202020192018201720162015
Current Ratio 4.60.41.01.12.16.321.324.93.6·0.8·
Quick Ratio 4.40.31.01.12.05.921.124.83.5·0.6·
Debt / Equity ·······0.00.2·-1.1·
LT Debt / Equity ·······0.00.0·-0.8·
Interest Coverage ·-1162.1-1314.5-1621.9-1232.7-1424.2-1172.185.617.9·-19.6·
Efficiency 3
Metric Trend 202620252024202320222021202020192018201720162015
Asset Turnover 1.30.00.30.20.0-0.00.00.81.4···
Inventory Turnover ··0.4·0.20.3······
Receivables Turnover 49.9·3.12.10.9-0.20.02.08.9···
Per Share 5
Metric Trend 202620252024202320222021202020192018201720162015
Book Value / Share $3.76$-5.14$-0.01$0.01$1.75$0.22$0.35$0.44$0.13·$-0.26·
Revenue / Share $2.65$0.00····$0.00$0.28$0.32···
Cash Flow / Share $-4.79$-39.58····$0.18$-0.10$0.01···
Cash / Share $4.21$2.76$0.53$0.94$3.23$0.26$0.36$0.19$0.19·$0.12·
EPS (TTM) $-2.96$-32.15$-101.16$-0.09$-0.09$-0.09$-0.10$0.16$0.12$0.12$-0.33$-0.12
Growth Rates 2
Metric Trend 202620252024202320222021202020192018201720162015
Revenue YoY ··-7.5%230.5%········
Revenue CAGR 3Y 15.6%···········
Valuation (TTM) 9
Metric Trend 202620252024202320222021202020192018201720162015
Revenue TTM $8M$0$4M$5M$1M$-188.6K$118.0K$60M$67M$67M$0$13.0K
Net Income TTM $-8M$-17M$-30M$-24M$-36M$-34M$-22M$36M$25M$25M$-52M$-18M
Market Cap $19M···········
P/E -3.6···········
P/S 2.6···········
P/B 2.9···········
P / Tangible Book 2.9···········
P / Cash Flow -1.4···········
Earnings Yield -27.4%···········

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

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

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Metric 2026-06-302025-06-302024-06-302023-06-302022-06-30
Revenue $8M $0 $4M $5M $1M
Operating Margin % -115.6% · -501.0% -668.8% -2491.6%
Net Income $-8M $-17M $-30M $-24M $-36M
Diluted EPS $-2.96 $-32.15 $-101.16 · ·

Institutional owners (13F) 27 filers · $8.8M total · As of June 30, 2026

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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 27
Value held $8.8M
New positions 5
Exited positions 5
Institutional activity — Q2 2026 vs prior quarter
New positions Exited positions Increased Decreased Net shares change
5 (-7 vs prior Q) 5 (-1 vs prior Q) 7 (+2 vs prior Q) 7 (+5 vs prior Q) -226K

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
JANUS HENDERSON GROUP PLC $2,438,800 140,000 27.83% Shares
Driehaus Capital Management LLC $1,798,833 166,713 20.53% Shares
Logos Global Management LP $1,402,700 130,000 16.01% Shares
RA CAPITAL MANAGEMENT, L.P. $670,318 62,124 7.65% Shares
VANGUARD GROUP INC $446,066 29,003 5.09% Shares
Balyasny Asset Management L.P. $443,577 41,110 5.06% Shares
MORGAN STANLEY $294,265 27,272 3.36% Shares
Opaleye Management Inc. $221,195 20,500 2.52% Shares
GEODE CAPITAL MANAGEMENT, LLC $209,244 19,382 2.39% Shares
VANGUARD CAPITAL MANAGEMENT LLC $204,050 18,911 2.33% Shares
Miller Financial Services LLC $161,850 15,000 1.85% Shares
LPL Financial LLC $135,436 12,552 1.55% Shares
Woodline Partners LP $121,323 11,244 1.38% Shares
VANGUARD FIDUCIARY TRUST CO $95,405 8,842 1.09% Shares
BlackRock, Inc. $60,985 5,652 0.70% Shares
UBS Group AG $32,219 2,986 0.37% Shares
Vanguard Global Advisers, LLC $13,488 1,250 0.15% Shares
Tower Research Capital LLC (TRC) $6,398 593 0.07% Shares
OSAIC HOLDINGS, INC. $1,832 170 0.02% Shares
JONES FINANCIAL COMPANIES LLLP $1,773 155 0.02% Shares
US BANCORP \DE\ $1,349 125 0.02% Shares
SBI Securities Co., Ltd. $1,155 107 0.01% Shares
WEST PACES ADVISORS INC. $129 12 0.00% Shares
BARCLAYS PLC $108 10 0.00% Shares
WELLS FARGO & COMPANY/MN $43 4 0.00% Shares
CITIGROUP INC $4 0 0.00% Shares
Forum Finance Group S.A. $1 92 0.00% Shares

Activists & 5%+ owners 1 position

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
King Pharmaceuticals, Inc. ×2 filings Sept. 26, 2008 · 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 15 insiders · 3 officers · 12 directors

19
Insider Role Last activity Shares owned Buys 12m Sells 12m Net 12m
Carl Spana President and CEO July 15, 2026 F 64,899 0 0 $0
Stephen T Wills Executive VP and CFO/COO July 15, 2026 F 63,792 0 1 $-9,458
Trevor Hallam Exec VP - Research & Dev July 21, 2010 A 384,000 0 0 $0
Arlene Morris Director Aug. 3, 2026 Z 41,580 0 0 $0
Alan W Dunton Director Aug. 3, 2026 Z 14,081 0 0 $0
John K A Prendergast Director Aug. 3, 2026 Z 15,102 0 0 $0
Robert K Deveer JR Director May 7, 2025 P 138,065 0 0 $0
Anthony M. Manning Director July 15, 2023 A 36,080 0 0 $0
Joseph Stanley Hull Director July 15, 2023 A 42,272 0 0 $0
Angela Rossetti Director June 16, 2020 A 503,585 0 0 $0
HOROVITZ ZOLA P Director Dec. 8, 2015 A 250,666 0 0 $0
Robert I Taber Director June 25, 2014 A 5,500 0 0 $0
Perry B Molinoff Director June 25, 2014 A 11,000 0 0 $0
Errol B Desouza Director July 21, 2010 A · 0 0 $0
MARXE AUSTIN W & GREENHOUSE DAVID M 10% owner Oct. 5, 2011 S 1,800,000 0 0 $0

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

ETF ownership Held by 2 ETFs

20

Weight reflects direct equity holdings (N-PORT) only; leveraged or derivative-based funds may hold additional swap exposure not shown.

Fund Weight Units As of Source
IWC · iShares Trust 0.00% 5,278 SH Sept. 11, 2026 Daily
VXF · VANGUARD INDEX FUNDS 0.00% 18,911 SH Aug. 19, 2026 Daily

PTN Analyst Consensus Bullish and bearish analyst opinions, 12-month price target, upside

21
rating · 7 analysts BUY
Median target $53.00 +468.1%
1 14.3% Strong Buy
5 71.4% Buy
1 14.3% Hold
0 0.0% Sell
0 0.0% Strong Sell

12-Month Price Target

3 analysts · 2026-09-29

Mean target $53.50 +473.4%

← Below all targets Current price $9.33
Low$47.50 Mean$53.50 High$60.00

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

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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
PTN $19M -3.6 -7.5% -111.7% -92.3% ·
MRKR $25M -1.9 -46.2% -343.0% -89.1% ·
CLRB · -0.4 · · · ·
ALLR $17M -0.0 · -3509.7% -102.1% ·
KTTA · · · · · ·
BCDA $13M · -87.8% · 1660.5% ·
AKTX $26.17B · · · -64.1% ·

My Metrics Your personal watchlist — selected rows from Full Fundamentals

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Source: SEC 10-K filed Sep 28, 2026