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

03
Price $0.81
Market Cap (MRQ) $13M
P/E -0.1
EPS $-6.33
ROE -319.3%
Debt/Equity 0.0
52W Range $1–$12

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

04
range
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Stock splits 3
Ex-date Split Type
April 9, 2025 1-for-13 Reverse
June 28, 2021 1-for-15 Reverse
Dec. 10, 2018 1-for-15 Reverse

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

06
EPS$-6.33
2020-12-31 → 2025-12-31
Free Cash Flow$-27M
2018-12-31 → 2025-12-31
Valuation & Ratios 07–12

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

Metric 5Y trend TPST 5Y avg Peer Median Verdict
P/E -0.15Y avg ≈-9.0 ≈-9.0 · ·
P/S 15.45Y avg ≈1843.5 ≈1843.5 · ·
P/B (MRQ) -11.95Y avg ≈19.3 ≈19.3 · ·
EV / EBITDA 0.15Y avg ≈-15.5 ≈-15.5 · ·
Price / FCF (TTM) -0.65Y avg ≈-17.1 ≈-17.1 · ·
Price / Cash Flow (TTM) -0.65Y avg ≈-17.2 ≈-17.2 · ·
EV / Revenue -14.35Y avg ≈1769.8 ≈1769.8 · ·
EV / FCF 0.15Y avg ≈-16.4 ≈-16.4 · ·
Price / Tangible Book 0.65Y avg ≈19.2 ≈19.2 · ·

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

14
Avg Surprise -101.6%
Next Report Nov 03, 2026
PeriodReportEPS ActualEPS EstSurprise
June 30, 2026 Aug 10, 2026 $-0.34 $-0.31 -11.1%
March 31, 2026 May 14, 2026 $-2.53 $-0.29 -785.9%
Dec. 31, 2025 $-0.62 $-0.63 2.0%
Sept. 30, 2025 $-0.79 $-3.34 76.3%
June 30, 2025 $-2.07 $-2.66 22.1%
March 31, 2025 $-3.16 $-3.36 5.9%
Dec. 31, 2024 $-4.03 $-3.34 -20.6%

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

15
Income Statement 17
Metric Trend 202520242023202220212020201920182017201620152014
Revenue ········$295.0K$653.0K$277.0K$0
Cost of Revenue ········$790.0K$5M$2M$0
R&D Expense ········$18M$22M$18M$22M
SG&A Expense $14M$14M$12M$12M$10M$5M$18M$9M$6M$49M$52M$26M
Operating Expenses ········$51M$82M$72M$48M
Operating Income $-27M$-42M$-29M$-35M$-27M$-19M$-45M$-27M$-84M$-81M$-72M$-48M
Interest Expense ··$1M$2M$1M$0·$134.0K$288.0K···
Interest Income ···········$-126.0K
Other Non-op $520.0K$1M$1M$549.0K$-34.0K$90.0K··$-36.0K$-164.0K$-20.0K$122.0K
Pretax Income ········$-51M$-82M$-73M$-50M
Income Tax $0$0$0$0$0$0··$67.0K$201.0K$75.0K$0
Net Income $-26M$-42M$-29M$-36M$-28M$-19M$-45M$-27M$-85M$-82M$-73M$-50M
EPS (Basic) $-6.33$-19.50$-1.91$-3.09$-7.47$-41.03······
EPS (Diluted) $-6.33$-19.50$-1.91$-3.09$-7.47$-41.03······
Shares (Basic) 4,149,7332,146,27615,416,20311,548,9073,790,303468,161······
Shares (Diluted) 4,149,7332,146,27615,416,20311,548,9073,790,303468,161······
EBITDA $-27M·$-29M$-35M··$-45M$-27M$-49M$-79M$-71M$-47M
Balance Sheet 26
Metric Trend 202520242023202220212020201920182017201620152014
Cash & Equivalents $8M$30M$39M$31M$52M$19M$62M$73M$18M$44M$43M$6M
Short-term Investments ········$52M$70M$83M$54M
Prepaid Expense $562.0K$1M$1M$1M$2M$1M$6M$3M$1M$2M$3M$2M
Other Current Assets $355.0K$535.0K$96.0K$263.0K$553.0K$59.0K······
Current Assets $8M$31M$40M$33M$69M$20M$71M$83M$20M$116M$130M$62M
PP&E (Net) $605.0K$886.0K$840.0K$1M$1M$1M··$3M$6M$8M$3M
PP&E (Gross) $2M$2M$2M$2M$2M$2M··$7M$9M$11M$5M
Accum. Depreciation $1M$1M$1M$1M$824.0K$456.0K··$4M$3M$2M$1M
Other Non-current Assets $517.0K$485.0K$448.0K$429.0K$111.0K$51.0K$507.0K$213.0K$74.0K$23.0K$0$130.0K
Total Assets $17M$41M$52M$46M$73M$23M$75M$84M$20M$123M$139M$66M
Accounts Payable $1M$2M$845.0K$1M$991.0K$1M$1M$2M$1M$2M$3M$3M
Accrued Liabilities $937.0K$3M$2M$3M$2M$665.0K$9M$8M$3M$11M$8M$8M
Short-term Debt ····$0·······
Current Liabilities $3M$14M$9M$7M$20M$3M$13M$10M$4M$13M$11M$10M
Capital Leases $7M$8M$9M$10M$2M$2M$2M·····
Other Non-current Liabilities ·····$0$16.0K$752.0K$751.0K$1M$520.0K$73.0K
Total Liabilities $10M$22M$25M$28M$37M$5M$15M$11M$5M$14M$12M$10M
Long-term Debt ·$6M$10M$10M·$239.0K$376.0K$572.0K····
Total Debt $0·$11M$10M··$376.0K$383.0K····
Common Stock $5.0K$3.0K$22.0K$11.0K$7.0K$1.0K$18.0K$13.0K$36.0K$36.0K$27.0K$24.0K
Paid-in Capital $240M$226M$192M$154M$136M$3M$267M$235M$6M$358M$295M$150M
Retained Earnings $-233M$-207M$-165M$-136M$-100M$-72M$-209M$-164M$-137M$-250M$-168M$-95M
AOCI ·····$452.0K$165.0K$148.0K$8.0K$-60.0K$-170.0K$-26.0K
Stockholders' Equity $7M$19M$27M$18M$36M$-69M$-50M$71M$-131M$108M$127M$55M
Liabilities + Equity $17M$41M$52M$46M$73M$23M$75M$84M$20M$123M$139M$66M
Shares Outstanding 4,927,1613,382,43222,045,25510,518,5396,910,324527,26518,266,54513,357,999246,34735,641,50527,296,74724,084,637
Cash Flow 14
Metric Trend 202520242023202220212020201920182017201620152014
D&A ········$2M$2M$1M$450.0K
Stock-based Comp ········$7M$9M$19M$12M
Restructuring ········$4M$5M$0$0
Other Non-cash ········$-3M$9M$2M$6M
Operating Cash Flow $-27M$-33M$-27M$-31M$-26M$-19M$-41M$-24M$-20M$-62M$-50M$-31M
CapEx $0$435.0K$170.0K$562.0K$135.0K$50.0K$397.0K$36.0K$4.0K$3M$5M$3M
Investing Cash Flow $0$-435.0K$-170.0K$-562.0K$-97.0K$-6.0K$4M$2M$458.0K$8M$-38M$-33M
Debt Issued ····$15M$0······
Stock Issued $6M$29M$36M$9M$33M$0$27M$0$0$54M$124M$52M
Net Stock Activity $6M·$36M$9M··$27M·$0$54M$124M$52M
Financing Cash Flow $4M$24M$36M$11M$59M$35M$27M$78M$-4M$54M$125M$52M
Net Change in Cash ·····$-25M$-10M$56M$-24M···
Taxes Paid $0$0····$0$4.0K····
Free Cash Flow $-27M·$-28M$-32M··$-42M$-24M$-46M$-64M$-56M$-33M
Profitability 7
Metric Trend 202520242023202220212020201920182017201620152014
Operating Margin ········-17154.6%-12406.1%-25992.4%·
Net Margin ········-17279.7%-12597.2%-26432.9%·
Pretax Margin ········-17257.0%-12566.5%-26405.8%·
EBITDA Margin ········-16595.2%-12063.4%-25528.2%·
ROA -89.9%·-60.4%-59.9%··-56.0%-52.3%-52.2%-63.0%-71.7%-87.6%
ROE -319.3%·-230.6%-159.1%··-68.8%91.0%-59.1%-70.0%-80.4%-102.1%
ROIC ········-78.8%-75.0%-56.8%·
Liquidity & Solvency 5
Metric Trend 202520242023202220212020201920182017201620152014
Current Ratio 2.5·4.34.5··5.78.58.88.811.66.1
Quick Ratio 2.3·4.24.3··5.07.58.68.711.35.9
Debt / Equity 0.0·0.40.6··0.00.0····
LT Debt / Equity ··0.20.6··0.00.0····
Interest Coverage ··-20.1-21.4···-200.6····
Efficiency 1
Metric Trend 202520242023202220212020201920182017201620152014
Asset Turnover ········0.00.00.0·
Per Share 5
Metric Trend 202520242023202220212020201920182017201620152014
Book Value / Share $1.35·$1.21$1.72··$3.21$5.31$1.80$3.04$4.65$2.30
Cash Flow / Share $-6.46·$-1.77$-2.69········
Cash / Share $1.56·$1.78$2.97··$3.42$5.49$0.44$1.23$1.58$0.27
Dividend / Share ·····$0.00$0.00$0.00····
EPS (TTM) $-6.33$-19.50$-1.91$-3.09$-7.47$-41.03······
Valuation (TTM) 14
Metric Trend 202520242023202220212020201920182017201620152014
Revenue TTM $259.0K$259.0K$259.0K$259.0K$259.0K$259.0K$259.0K$259.0K$295.0K$653.0K$277.0K$0
Net Income TTM $-26M$-42M$-29M$-36M$-28M$-19M$-45M$-27M$-85M$-82M$-73M$-50M
Market Cap $14M·$1.26B$157M··$24.01B$20.71B$146.29B$159.50B$780.07B$3.12T
Enterprise Value $6M·$1.23B$136M··$23.95B$20.64B····
P/E -0.5-0.6-29.9-4.8-9.2-10.2······
P/S 54.6·4868.7607.2··92693.979954.6495914.6244264.42816122.6·
P/B 2.1·47.18.7··410.1291.92275.31473.96149.556307.1
P / Tangible Book 2.125.047.18.713.1·······
P / Cash Flow -0.5·-46.1-5.1··-582.4-875.7-3211.7-2583.7-15512.6-101843.6
P / FCF -0.5·-45.8-5.0··-576.8-874.4-3200.6-2479.9-14051.4-93291.5
EV / EBITDA -0.2·-42.3-3.9··-527.4-767.9····
EV / FCF -0.2·-44.8-4.3··-575.4-871.3····
EV / Revenue 24.8·4757.9526.6··92454.179673.1····
Earnings Yield -220.6%-179.6%-3.3%-20.7%-10.9%-9.8%······

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 $-26M $-42M $-29M $-36M $-28M
Diluted EPS $-6.33 $-19.50 $-1.91 $-3.09 $-7.47

Institutional owners (13F) 23 filers · $1.9M 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 23
Value held $1.9M
New positions 4
Exited positions 5
Institutional activity — Q2 2026 vs prior quarter
New positions Exited positions Increased Decreased Net shares change
4 (-1 vs prior Q) 5 (+4 vs prior Q) 5 (+2 vs prior Q) 3 (0 vs prior Q) +507K

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
SABBY MANAGEMENT, LLC $567,527 511,286 29.75% Shares
VANGUARD GROUP INC $466,547 162,560 24.45% Shares
Versant Venture Management, LLC $299,447 269,772 15.69% Shares
VANGUARD CAPITAL MANAGEMENT LLC $259,616 233,888 13.61% Shares
GEODE CAPITAL MANAGEMENT, LLC $96,155 86,625 5.04% Shares
VANGUARD FIDUCIARY TRUST CO $76,488 68,908 4.01% Shares
BlackRock, Inc. $43,365 39,068 2.27% Shares
Squarepoint Ops LLC $34,299 30,900 1.80% Shares
NORTHERN TRUST CORP $22,351 20,136 1.17% Shares
CITADEL ADVISORS LLC $22,000 19,820 1.15% Shares
UBS Group AG $6,255 5,636 0.33% Shares
CIBC Private Wealth Group LLC $4,729 460 0.25% Shares
Tower Research Capital LLC (TRC) $4,353 3,922 0.23% Shares
MORGAN STANLEY $2,244 2,022 0.12% Shares
OSAIC HOLDINGS, INC. $1,669 1,513 0.09% Shares
Federation des caisses Desjardins du Quebec $324 292 0.02% Shares
JONES FINANCIAL COMPANIES LLLP $258 239 0.01% Shares
BARCLAYS PLC $246 222 0.01% Shares
SBI Securities Co., Ltd. $62 56 0.00% Shares
Parallel Advisors, LLC $20 18 0.00% Shares
Caitong International Asset Management Co., Ltd $3 3 0.00% Shares
BNP PARIBAS FINANCIAL MARKETS $3 3 0.00% Shares
ROYAL BANK OF CANADA $0 28 0.00% Shares

Activists & 5%+ owners 11 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
Versant Venture Capital VI, L.P., Versant Ventures VI GP, L.P., Versant Ventures VI GP-GP, LLC, Versant Vantage II, L.P., Versant Vantage II GP, L.P., Versant Vantage II GP-GP, LLC, Versant Venture Capital IV, L.P., Versant Side Fund IV, L.P., Versant Ventures IV, LLC ×8 filings April 2, 2026 1.10% Amendment · SEC
Matthew Angel ×2 filings March 25, 2026 37.40% Amendment · SEC
New Enterprise Associates 15, L.P., NEA Partners 15, L.P., NEA 15 GP, LLC, Forest Baskett, Anthony A. Florence, Jr., Mohamad H. Makhzoumi, Scott D. Sandell, Peter W. Sonsini ×2 filings April 13, 2021 · Initial filing · SEC
Fonds Innobio FPCI, Bpifrance Investissement S.A.S., Bpifrance Participations S.A., Caisse des Dépôts, EPIC Bpifrance, Bpifrance S.A. ×3 filings July 30, 2020 · Initial filing Passive investment SEC
BML Investment Partners, L.P., Braden M Leonard (1) Sept. 14, 2018 · Initial filing M&A / sale SEC
Michelle Dipp, M.D., Ph.D. (2) ×5 filings May 3, 2018 · Initial filing · SEC
Richard Aldrich (2) ×4 filings June 3, 2016 · Initial filing · SEC
Longwood Fund, L.P. (2), Longwood Fund GP, LLC (2), Christoph Westphal, M.D., Ph.D. (2), Richard Aldrich (2), Michelle Dipp, M.D., Ph.D. (2) ×6 filings March 20, 2015 · Initial filing · SEC
DEER VII & CO. LTD., DEER VII & CO. L.P., BESSEMER VENTURE PARTNERS VII L.P., BESSEMER VENTURE PARTNERS VII INSTITUTIONAL L.P., BVP VII SPECIAL OPPORTUNITY FUND L.P., DEER MANAGEMENT CO. LLC ×6 filings Jan. 16, 2015 · Initial filing · SEC
July 31, 2013 · Initial filing · SEC
General Catalyst Group V, L.P., GC Entrepreneurs Fund V, L.P., General Catalyst Partners V, L.P., General Catalyst GP V, LLC, Joel E. Cutler, David P. Fialkow, David J. Orfao ×2 filings March 21, 2013 · 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 57 insiders · 28 officers · 33 directors

19
Insider Role Last activity Shares owned Buys 12m Sells 12m Net 12m
Matthew Angel CEO and President March 24, 2026 P 231,482 2 0 $1,000,002
Stephen R Brady President and CEO Jan. 2, 2025 A 46,376 0 0 $0
Iii Louis J Arcudi President and CEO Feb. 26, 2021 A · 0 0 $0
Christopher A. Kroeger Chief Executive Officer May 10, 2018 A · 0 0 $0
Nicholas Maestas Chief Financial Officer March 31, 2026 A · 0 0 $0
Jennifer Lynn Minai-Azary Chief Financial Officer Feb. 26, 2021 A · 0 0 $0
Christophe Couturier Chief Financial Officer Dec. 23, 2016 A 50,900 0 0 $0
Jeffrey E Young Chief Financial Officer Dec. 3, 2015 A 53,750 0 0 $0
Thomas W. Dubensky President Jan. 3, 2023 A 113,343 0 0 $0
Arthur Tzianabos President and CSO Dec. 3, 2015 A 25,400 0 0 $0
Paul W.D. Chapman Chief Operating Officer May 10, 2016 P 3,100 0 0 $0
Alison Frances Lawton Chief Operating Officer June 7, 2013 A · 0 0 $0
Justin Trojanowski Corporate Controller March 31, 2026 A 22,168 0 0 $0
Samuel Whiting Chief Medical Officer Jan. 2, 2025 A 9,573 0 0 $0
Pierre Lorenzo Corporate Controller June 21, 2022 A 53 0 0 $0
Julia C. Owens Executive Chair March 17, 2021 A 74,400 0 0 $0
Christophe Arbet-Engels Chief Medical Officer May 25, 2020 A · 0 0 $0
Ryan Zeidan Chief Development Officer May 25, 2020 A · 0 0 $0
Tamara L Joseph General Counsel and Secretary May 25, 2020 A · 0 0 $0
Pharis Mohideen Chief Medical Officer Jan. 15, 2019 A 7,440 0 0 $0
Jeffery M. Brinza Sec., CAO and General Counsel Jan. 15, 2019 A · 0 0 $0
James Woodruff Lillie Chief Scientific Officer May 10, 2018 A · 0 0 $0
Jonathan Gillis Senior Vice President, Finance May 10, 2018 A · 0 0 $0
Michelle Dipp Executive Chair June 21, 2017 A 962,056 0 0 $0
Theresa Mcneely EVP, Chief Comm. Officer April 9, 2015 P 400 0 0 $0
David Harding Chief Commercial Officer April 10, 2014 P 2,290 0 0 $0
Christopher A Bleck Chief Commercial Officer Sept. 11, 2013 P 2,000 0 0 $0
Christopher M Lindblom Vice President of Finance June 7, 2013 A · 0 0 $0
Nancy Freda Smith Director Sept. 22, 2026 A · 0 0 $0
William Drake Richey Director June 4, 2026 A · 0 0 $0
John D. Yee Director June 4, 2026 A · 0 0 $0
Ronit Simantov Director Jan. 27, 2026 A · 0 0 $0
Geoffrey Nichol Director Jan. 27, 2026 A · 0 0 $0
Christine A Pellizzari Director Jan. 27, 2026 A · 0 0 $0
Thomas Woiwode Director June 17, 2022 A 2,118,644 0 0 $0
Stella Xu Director July 1, 2021 A 579,710 0 0 $0
Habib J Dable Director June 22, 2020 A · 0 0 $0
Carole Nuechterlein Director June 22, 2020 A · 0 0 $0
James M. Hindman Director June 22, 2020 A · 0 0 $0
Mary Lynne Hedley Director June 22, 2020 A · 0 0 $0
Carol Giltner Gallagher Director June 22, 2020 A 23,684 0 0 $0
John P Howe MD Director June 22, 2020 A · 0 0 $0
Randall W Whitcomb Director June 20, 2019 A 15,784 0 0 $0
Mary Fisher Director Dec. 7, 2018 A 3,319 0 0 $0
Marc D Kozin Director Dec. 7, 2018 A 7,740 0 0 $0
Richard Aldrich Director Dec. 7, 2018 A 6,169 0 0 $0
John Sexton Director July 4, 2018 A · 0 0 $0
Jeffrey D Capello Director July 4, 2018 A 11,111 0 0 $0
Thomas Malley Director June 13, 2017 A 204,981 0 0 $0
Harald F. Stock Director Jan. 5, 2016 A 251,228 0 0 $0
Deer Management Co. LLC Director June 13, 2014 A · 0 0 $0
Stephen Kraus Director June 13, 2014 A 0 0 0 $0
Christoph H Westphal Director March 7, 2014 P 3,820,571 0 0 $0
Jonathan L Tilly Director June 7, 2013 A · 0 0 $0
John G Simon Director Aug. 13, 2012 C 1,090,908 0 0 $0
Longwood Fund, L.P. 10% owner Jan. 14, 2015 J 319,082 0 0 $0
Michael Raab · Jan. 27, 2026 A · 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
VXF · VANGUARD INDEX FUNDS 0.00% 128,944 SH Aug. 19, 2026 Daily
VTI · VANGUARD INDEX FUNDS 0.00% 104,944 SH Aug. 19, 2026 Daily

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

21
rating · 7 analysts BUY
Median target $7.00 +762.9%
2 28.6% Strong Buy
4 57.1% Buy
1 14.3% Hold
0 0.0% Sell
0 0.0% Strong Sell

12-Month Price Target

1 analysts · 2026-09-29

Mean target $7.00 +762.9%

Low$7.00 Mean$7.00 High$7.00

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
TPST $14M -0.5 · · -319.3% ·
AKTX $26.17B · · · -64.1% ·
INAB $23M -0.5 · · -90.8% ·
VTGN · -0.3 161.1% -5491.3% -136.8% ·
PASG $38M -0.8 · · -159.7% ·
LSTA · -1.0 -83.0% · · ·

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26

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Source: SEC 10-Q filed Aug 13, 2026