Seres completes VOWST sale to Nestlé for ~$175M gross; debt retired, runway to Q4 2025

Seres Therapeutics, Inc.

Received ~$175M gross at close: $100M upfront, $60M prepaid milestone, $15M equity; net ~$155M after ~$20M settlement.
Repaid $128M to Oaktree, terminating $110M term loan; debt fully retired.
Expects $50M installment in Jan 2025, $25M in July 2025; up to $275M future milestones tied to VOWST sales.
Focus shifts to SER-155 (promising Phase 1b allo-HSCT data), SER-147; headcount cut from ~200 to ~100.
Cash runway extended into Q4 2025; plans to seek Breakthrough Therapy designation for SER-155.

item 1.01 item 1.02 item 2.01 item 3.02 item 7.01 item 9.01

Machine-readable event card

schema_version: secwatch.filing_event.v1
accession: 0001193125-24-230144
form_type: 8-K
ticker: MCRB
cik: 0001609809
company_name: Seres Therapeutics, Inc.
filed_at: 2024-10-01T23:59:59+00:00
discovered_at: 2026-05-14T18:03:08.959316+00:00
generated_at: 2026-05-30T23:27:21.771762+00:00
sec_items: ["1.01", "1.02", "2.01", "3.02", "7.01", "9.01"]
event_type: m_and_a
sentiment: positive
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: high
secwatch_canonical_url: https://secwatch.observer/filing/0001193125-24-230144
json_url: https://secwatch.observer/filing/0001193125-24-230144.json
markdown_url: https://secwatch.observer/filing/0001193125-24-230144.md
text_url: https://secwatch.observer/filing/0001193125-24-230144.txt
edgar_index_url: https://www.sec.gov/Archives/edgar/data/1609809/000119312524230144/0001193125-24-230144-index.htm
edgar_primary_document_url: https://www.sec.gov/Archives/edgar/data/1609809/000119312524230144/d873729d8k.htm
generated_by_model: deepseek-v4-flash:cloud@v2
review_status: machine_generated
human_reviewed: false
corrected: false
correction_note: null
correction_timestamp: null
superseded_by: null

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Source: SEC EDGAR

accession 0001193125-24-230144

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