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Summit Therapeutics

Market cap $13.1B 799.8M shares (10-Q, Oct 30, 2026) × $16.33 close Nov 6, 2026

Most recent annual filing: 2026-02-15

Catalyst timeline

7 trackedQuarter catalyst calendar →
  1. ivonescimab NSCLC interim4Q 2026ivonescimab NSCLC interim, 4Q 2026, material
  2. HARMONi-GU1 corporate update4Q 2026HARMONi-GU1 corporate update, 4Q 2026, routine
  3. EA2251 / HARMONi-GU1 corporate update4Q 2026EA2251 / HARMONi-GU1 corporate update, 4Q 2026, routine
  4. ivonescimab NSCLC PDUFA dateNov 14, 2026ivonescimab NSCLC PDUFA date, Nov 14, 2026, thesis-defining
  5. Share authorization increase financingDec 31, 2026Share authorization increase financing, Dec 31, 2026, routine
  6. HARMONi-3 non-squamous readout1H 2027HARMONi-3 non-squamous readout, 1H 2027, notable
  7. AstraZeneca preferred stock lock-up corporatelate 2027AstraZeneca preferred stock lock-up corporate, late 2027, routine

Bar width shows how precise the guidance is — a pin is a stated date, a wide band a six-month window. Deeper blue means more of the thesis rides on the event; it is not a view on the stock.

Pipeline (6 active programs)

Technology platforms

SCOPE IO · Lunit

AI-powered pathology platform for tumor microenvironment analysis using H&E whole-slide images; supports biomarker discovery, patient stratification, and immuno-oncology research

Capital (as filed)

Cash
$151M cash and cash equivalents · Sep 30, 2026 (10-Q)
Short-term investments
$479M Sep 30, 2026
Operating cash flow
−$160M quarter Jun 30, 2026 → Sep 30, 2026, year-to-date difference (10-Q)
As stated in coverage
$630M cash per the update of Nov 4, 2026 — the company's own words as read there, not the filed figure

Offering documents (3)

Cash, investments and operating cash flow are the company's own XBRL facts as filed with the SEC, each shown with its period end and tag. As-stated figures come from the company's own words as read in Biotech Distilled coverage, dated, and routinely count securities and planned financing that a balance sheet does not. Offering rows are the SEC cover pages as filed. Not investment advice. Figures as of Nov 7, 2026.

Biotech Distilled coverage (20)

Articles open on Substack. Some are subscriber-only; those marked ★ Distilled Pro are for Distilled Pro members.

Verdict history (20 calls)

Every verdict Biotech Distilled has published on Summit Therapeutics, oldest first — the full history, never a selection. How calls are scored: the track record.

  1. Buy core Summit Therapeutics (SMMT): Scientific Deep Dive for Ivonescimab and Pipeline Products Strong science, pristine cash runway, and historic insider conviction justify buying, with the primary risk being FDA regulatory friction over geographic slicing of OS data in 2L+ EGFRm NSCLC.
  2. Buy core UPDATE: Summit Therapeutics (SMMT) - EoY 2025 Update Accelerated HARMONi-3 squamous interim PFS catalyst in Q2 2026 and pristine balance sheet maintain the buy thesis.
  3. Buy core UPDATE: Summit Therapeutics (SMMT) - ELCC 2026 Data Compelling intracranial efficacy data from ELCC strengthens the FDA approval case on unmet medical need grounds.
  4. Buy core UPDATE: Summit Therapeutics (SMMT) - Q1 2026 Earnings, an iDMC Pass, and an ASCO Plenary Slot HARMONi-6 OS ASCO Plenary slot is a major catalyst escalation, but asymmetry is shifting at $21.46 so prefer entering on dips rather than chasing.
  5. Buy core UPDATE: Summit Therapeutics (SMMT) - The 25% Panic Into ASCO 25% single-session crash overdiscounts FDA risk; at $16.11 the asymmetry has flipped back in the buyer's favor ahead of the May 31 ASCO Plenary OS readout.
  6. Buy core UPDATE: Summit Therapeutics (SMMT) - The Plenary Delivered. The Tape Didn't. HARMONi-6 OS HR 0.66 published in The Lancet validates the cooperative-binding mechanism; at $15.71 the entry compensates for FDA risk more than at $16.11 on May 1.
  7. Buy core UPDATE: Summit Therapeutics (SMMT) - The Insiders Got the Green Light Board clearing Duggan, Zanganeh, and Soni to buy through the ATM at ~$15 is the strongest available insider signal that the post-Plenary drawdown is mispriced.
  8. Hold UPDATE: Summit Therapeutics (SMMT) - The $500M Bait-and-Switch $500M underwritten public offering at a punitive discount six days after the insider-buy signal damages credibility and creates near-term technical supply overhang, warranting a downgrade to HOLD while dilution reprices.
  9. Buy core UPDATE: Summit Therapeutics (SMMT) - The Deal Got Pulled Withdrawal of the $500M offering removes the dilution trigger that caused the HOLD downgrade; at $13.08 the asymmetry tilts back toward the buyer, though management credibility and going-concern overhang warrant caution.
  10. Buy core UPDATE: Summit Therapeutics (SMMT) - The Western OS Number Just Caught Up Western HARMONi OS HR converging to 0.76 at 23.2 months of follow-up, matching the global ITT, removes the post-hoc geographic slicing critique and materially de-risks the FDA approval case.
  11. Buy core UPDATE: Summit Therapeutics (SMMT) - The Form 4s Landed $52.2M of confirmed insider buying at $13.17 weighted average, combined with a fresh $380M ATM and bulletproof runway, validates the June thesis and confirms the asymmetry argument.
  12. Buy core UPDATE: Summit Therapeutics (SMMT) - China Says Yes, Round Three Third NMPA approval validates the HARMONi-6 dataset through regulatory audit and adds real-world safety data from 70,000+ commercial patients, though it does not fix the FDA geography problem.
  13. Buy core UPDATE: Summit Therapeutics (SMMT) - The Drug Escapes the Lung HARMONi-GI1 OS win over durvalumab in biliary tract cancer and Lancet Oncology publication of HARMONi primary analysis strengthen the platform case; at $13.36 near insider cost basis the asymmetry favors buyers.
  14. Buy core UPDATE: Summit Therapeutics (SMMT) - Keytruda Just Lost a Head-to-Head on Survival HARMONi-2 OS win over pembrolizumab monotherapy is the third head-to-head OS win over a checkpoint inhibitor and the first against Keytruda itself, narrowing the range of bad outcomes even in a CRL scenario.
  15. Buy core UPDATE: Summit Therapeutics (SMMT) - The Hazard Ratio Arrives HARMONi-2 OS HR 0.73 against pembrolizumab with 0.58 in PD-L1-high subgroup directly de-risks HARMONi-7; at $18.42 after a 26% run the asymmetry is less generous but the science is materially stronger.
  16. Hold UPDATE: Summit Therapeutics (SMMT) - The Western Confidence Interval Crosses One Western HARMONi subgroup CI of 0.52–1.10 crosses 1.0 and global p-value is nominal on a pre-specified analysis that already missed; at $17.40 the price no longer compensates for the FDA coin-flip 60 days out.
  17. Buy core UPDATE: Summit Therapeutics (SMMT) - AstraZeneca Writes a $2 Billion Check AstraZeneca's $2B convertible preferred at $18.36 (19% premium) transforms the CRL downside from a busted binary to 'delay with a war chest,' restoring the asymmetry in the buyer's favor.
  18. Buy core UPDATE: Summit Therapeutics (SMMT) - The Fine Print Behind the $2 Billion AstraZeneca's fine print is better than feared: no veto on M&A, one-year lockup removes supply overhang through PDUFA, and the $2B committed capital is intact.
  19. Buy core UPDATE: Summit Therapeutics (SMMT) - The MOU Gets a Phase III AstraZeneca-Daiichi Sankyo Phase III in TNBC with Datroway expands the platform into breast cancer on capital-efficient terms, reinforcing the 'delayed not broken' downside case without changing the November binary.
  20. Buy core UPDATE: Summit Therapeutics (SMMT) - The Biliary Number Arrives HARMONi-GI1 OS HR 0.75 with tight CI against durvalumab in biliary cancer, plus EA2251 U.S. registration trial, strengthens the 'delayed not broken' downside case 19 days before the PDUFA.

Every verdict Biotech Distilled has published on this company, in order, with the post it came from — the full history, never a selection. Position figures are the same ones shown on /track-record, computed by the same method. Editorial opinion, not investment advice.

Timing, in the company's words (6 quotes from 5 filings)

Sentences quoted verbatim from the company's SEC filings, newest filing first. Each sits under the filing it appeared in; the "matched to" tag names the calendar row it was read for.

Timing sentences quoted from the company's own SEC filings, each under the filing it appeared in. The 'matched to' tag is the calendar row the sentence was read for; the filing is the source. Not investment advice.

Filings & releases (55)

SEC filings from EDGAR and press releases captured from the company's investor-relations site, newest first. Releases captured from Apr 30, 2026; filings from March 2026. Summaries come from the BD update that read the document; "BD extracted" counts point at the pipeline table above. All companies →

6 more filings (13G holder notices, S-8, proxy material, SEC correspondence …)