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TPST

Tempest Therapeutics, Inc.
TPST stock: dilution, reverse split — what the SEC filings say, updated every weekday morning.
Nasdaq · Pharmaceutical Preparations · EDGAR filings (CIK 1544227) · 12 signals · 2 setups · updated Sep 18, 2026

What the filings say Pressure ▼

The filings point to a discounted equity raise ahead — dilution for existing holders. Next thing to watch: a 424B or offering 8-K.

Radar 88 (high attention) · dilution pressure high · listing risk low · governance risk low · runway 0.4 mo · strongest signal: Equity line (Sep 15, 2026)

What would confirm: 424B5/8-K announcing an offering, ATM sales disclosed in next 10-Q, or Form 4 sales by insiders ahead of it.
What would prove it wrong: Non-dilutive cash event (asset sale, grant, milestone payment), OCF turning positive, or shelf withdrawn (RW).

Direction is stated for existing shareholders (▼ more shares / survival or listing risk; ▲ insiders or holders buying). It is a characterization of the filings, not a forecast or a recommendation.

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88Radar · attention score (0–100)
88Dilution pressure · financing + balance sheet
34Listing risk · exchange standards
22Governance risk · reporting, auditor, going concern

Setups

Independent filings stitched into a thesis, each with what would confirm and what would prove it wrong.

Forced-raise setup Pressure ▼ strength 0.95

The filings point to a discounted equity raise ahead — dilution for existing holders. Next thing to watch: a 424B or offering 8-K. Cash need (negative equity, runway < 6 months) coexists with live selling machinery (atm program, equity line, pipe, shelf effective, shelf filed, offering (424b)). Base case is a discounted raise; the question is when, not if.

Would confirm: 424B5/8-K announcing an offering, ATM sales disclosed in next 10-Q, or Form 4 sales by insiders ahead of it.
Would invalidate: Non-dilutive cash event (asset sale, grant, milestone payment), OCF turning positive, or shelf withdrawn (RW).
ATM programEquity lineNegative equityPIPERunway < 6 monthsShelf effectiveShelf filedOffering (424B)

Death-spiral watch Pressure ▼ strength 0.70

Variable-priced paper is outstanding while the listing is under stress — the structure where dilution can accelerate. Watch the share count each quarter. Discount-priced or variable-priced securities are outstanding while the company is managing its listing with reverse splits/notices. Each conversion lowers the price, which lowers the next conversion price.

Would confirm: Rising share count in 10-Q cover vs prior quarter; repeated 424B3 resales; another reverse split proposal.
Would invalidate: Notes repaid in cash / equity line terminated (8-K 1.02); share count flat quarter over quarter.
Equity lineReverse split

Analyst note

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12-month history
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Balance sheet (XBRL)

$779Kcash + short-term investments as of Jun 30, 2026
0.4 moestimated runway (annualized 180-day YTD operating cash flow [companyfacts])
$-1.1Mstockholders' equity as of Jun 30, 2026
$30.1Mpublic float (10-K cover)
14.8Mshares outstanding as of May 8, 2026 · was 14.3M Mar 25, 2026

Runway = liquidity ÷ monthly operating burn at the latest reported period · balance sheet 80 days old. A financing after the balance-sheet date is the main reason a figure can be stale — check the timeline below for offerings since then.

Signal timeline

Last 30 days of filing signals plus current balance-sheet flags, newest first. ▼ pressure · ▲ support · hover a score for its components; every row links to the filing.

DateSignalEvidenceScore
Sep 15, 2026 Equity line “equity line” language in 8-K (EX-10.1) filed 2026-09-15 filing 52
Sep 15, 2026 ATM program “atm” language in 8-K (EX-10.1) filed 2026-09-15 filing 46
Sep 15, 2026 Reverse split “reverse split” language in 8-K (EX-4.2) filed 2026-09-15 filing 34
Sep 15, 2026 PIPE “pipe” language in 8-K (8-K) filed 2026-09-15 filing 33
Sep 15, 2026 Unregistered sale 8-K Item 3.02 filed 2026-09-15 (accepted 16:06 ET) filing 32
Sep 1, 2026 Offering (424B) 424B3 prospectus supplement 2026-09-01; 4 prior 424B filings in 12m filing 28
Aug 31, 2026 Shelf effective EFFECT notice 2026-08-31 filing 21
Aug 24, 2026· Officer/director change 8-K Item 5.02 filed 2026-08-24 (accepted 16:43 ET) filing 22
Aug 21, 2026 Shelf filed S-1 filed 2026-08-21 filing 30
Jun 30, 2026 Runway < 6 months ~0.4 months runway: liquidity $779,000 as of 2026-06-30, burn $21,042,250/yr (annualized 180-day YTD operating cash flow [companyfacts]) filing 45
Jun 30, 2026 Negative equity Stockholders' equity $-1,090,000 as of 2026-06-30 filing 31
Jun 30, 2026 Cash < current liabilities Liquidity $779,000 vs current liabilities $4,450,000 filing 22

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