{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-075731","form_type":"8-K","ticker":"PTCT","cik":"0001070081","company_name":"PTC THERAPEUTICS, INC.","filed_at":"2026-06-18T20:14:58+00:00","discovered_at":"2026-06-18T20:16:01.325532+00:00","generated_at":"2026-06-18T20:22:00.124942+00:00","sec_items":["1.01","2.03","3.02","8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"PTC Therapeutics closes $550M zero-coupon convertible notes offering, repurchases $222M of existing notes","bullets":["Issued $550M aggregate principal of 0.0% Convertible Senior Notes due 2031, initial conversion price ~$107.48/share.","Net proceeds approximately $535.5M after discounts and estimated offering expenses.","Using ~$328.8M to repurchase $222M principal of existing 1.50% Convertible Senior Notes due 2026; $55.5M remains outstanding.","Notes are general unsecured senior obligations; company may redeem after June 20, 2029 if stock price >=130% of conversion price.","Initial purchasers exercised in full their option to purchase an additional $50M of notes."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-075731","json":"https://secwatch.observer/filing/0001104659-26-075731.json","markdown":"https://secwatch.observer/filing/0001104659-26-075731.md","text":"https://secwatch.observer/filing/0001104659-26-075731.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1070081/000110465926075731/0001104659-26-075731-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1070081/000110465926075731/tm2618266d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-18T20:22:00.124942+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"714dbd8b50d811acb01153d52815469fe13db069","claim":"PTC THERAPEUTICS, INC. incurred convertible notes of $550,000,000 with U.S. Bank Trust Company, National Association at 0.0% maturing June 15, 2031.","evidence_excerpt":"On June 18, 2026, PTC Therapeutics, Inc. (the “Company”) completed its previously announced private offering of $550,000,000 aggregate principal amount of its 0.0% Convertible Senior Notes due 2031 (the “Notes”) and entered into an indenture with U.S. Bank Trust Company, National Association, as trustee (the “Trustee”), governing the Notes (the “Indenture”).","evidence_source":"SEC 8-K Item 2.03/2.04","evidence_url":"https://www.sec.gov/Archives/edgar/data/1070081/000110465926075731/0001104659-26-075731-index.htm","confidence":0.9,"family_label":"Debt Financings","details":[{"label":"Instrument","value":"convertible notes"},{"label":"Principal","value":"$550,000,000"},{"label":"Counterparty","value":"U.S. Bank Trust Company, National Association"},{"label":"Rate","value":"0.0%"},{"label":"Maturity","value":"June 15, 2031"},{"label":"Event","value":"incurrence"}],"fact_type":"debt_financing"},{"claim_id":"daf65dece00600f976282482b25eaf7142bcd6ad","claim":"PTC THERAPEUTICS, INC. entered into Indenture with U.S. Bank Trust Company, National Association valued at $550,000,000 0.0% Convertible Senior Notes due 2031 (effective 2026-06-18).","evidence_excerpt":"On June 18, 2026, PTC Therapeutics, Inc. (the “Company”) completed its previously announced private offering of $550,000,000 aggregate principal amount of its 0.0% Convertible Senior Notes due 2031 (the “Notes”) and entered into an indenture with U.S. Bank Trust Company, National Association, as trustee (the “Trustee”), governing the Notes (the “Indenture”).","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1070081/000110465926075731/0001104659-26-075731-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Agreement","value":"notes offering"},{"label":"Counterparty","value":"U.S. Bank Trust Company, National Association"},{"label":"Value","value":"$550,000,000 0.0% Convertible Senior Notes due 2031"},{"label":"Effective","value":"2026-06-18"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}