{"version":"company-facts.v1","source":"https://secwatch.observer","generated_at":"2026-07-11T17:19:32.932626+00:00","company":{"ticker":"MBX","cik":1776111,"company_name":"MBX Biosciences, Inc."},"pagination":{"limit":100,"returned":8,"next_cursor":null},"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer","counterparties":{"contract_counterparty":[{"display_name":"5 Burlington Woods, LLC","detail":"lease","count":1,"first_seen":"2026-02-27T23:59:59+00:00","last_seen":"2026-02-27T23:59:59+00:00","evidence_fact_ids":[30791]}]},"facts":[{"fact_type":"shareholder_vote","fact_key":"a2be0e2fb7d83b7e459966b79b14692d9774d943","cik":1776111,"ticker":"MBX","company_name":"MBX Biosciences, Inc.","filed_at":"2026-06-05T11:52:37+00:00","payload":{"item_codes_triggered":["5.07"],"meeting_date":"2026-06-04","outcome":"passed","proposal_text":"Ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026.","proposal_type":"auditor_ratification","results":[{"broker_non_votes":"-","subject":null,"votes_abstain":"1,946","votes_against":"1,946","votes_for":"43,713,693","votes_withheld":null}]},"claim":"MBX Biosciences, Inc. shareholders approved Ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026. at the 2026-06-04 meeting.","evidence_excerpt":"The Company's stockholders approved Proposal 2 to ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026. The votes cast at the Annual Meeting were as follows: For Against Abstain Broker Non-Votes 43,713,693 1,946 1,946 -","confidence":0.9,"filing_url":"https://secwatch.observer/filing/0001193125-26-258417","anchor_url":"https://secwatch.observer/filing/0001193125-26-258417#claim-a2be0e2fb7d83b7e459966b79b14692d9774d943","edgar_index_url":"https://www.sec.gov/Archives/edgar/data/1776111/000119312526258417/0001193125-26-258417-index.htm"},{"fact_type":"shareholder_vote","fact_key":"23865740957ccbcb5229935e0fde22ccca3a3beb","cik":1776111,"ticker":"MBX","company_name":"MBX Biosciences, Inc.","filed_at":"2026-06-05T11:52:37+00:00","payload":{"item_codes_triggered":["5.07"],"meeting_date":"2026-06-04","outcome":"passed","proposal_text":"Election of two Class II directors to serve for a three-year term ending at the annual meeting of stockholders to be held in 2029.","proposal_type":"director_election","results":[{"broker_non_votes":"4,130,833","subject":"Patrick J. 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Mathers, to the Company's Board of Directors, each to hold office until the Company's 2029 annual meeting of stockholders and until their successors are duly elected and qualified, subject to their earlier death, resignation or removal (\"Proposal 1\") and (ii) to ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026 (\"Proposal 2\").","confidence":0.9,"filing_url":"https://secwatch.observer/filing/0001193125-26-258417","anchor_url":"https://secwatch.observer/filing/0001193125-26-258417#claim-23865740957ccbcb5229935e0fde22ccca3a3beb","edgar_index_url":"https://www.sec.gov/Archives/edgar/data/1776111/000119312526258417/0001193125-26-258417-index.htm"},{"fact_type":"earnings_release","fact_key":"c21c161a93e44c6ae2b8b07599203405169d38b6","cik":1776111,"ticker":"MBX","company_name":"MBX Biosciences, Inc.","filed_at":"2026-05-07T23:59:59+00:00","payload":{"eps_text":null,"guidance_signal":"none","item_codes_triggered":["2.02"],"net_income_text":"Net loss for the three months ended March 31, 2026, was $23.5 million","period_text":"first quarter ended March 31, 2026","report_date":"2026-05-07","result_type":"reported_results","revenue_text":null},"claim":"MBX Biosciences, Inc. reported first quarter ended March 31, 2026 results: net income Net loss for the three months ended March 31, 2026, was $23.5 million.","evidence_excerpt":"Net loss for the three months ended March 31, 2026, was $23.5 million compared to a net loss of $23.9 million for the same period in 2025.","confidence":0.85,"filing_url":"https://secwatch.observer/filing/0001193125-26-210825","anchor_url":"https://secwatch.observer/filing/0001193125-26-210825#claim-c21c161a93e44c6ae2b8b07599203405169d38b6","edgar_index_url":"https://www.sec.gov/Archives/edgar/data/1776111/000119312526210825/0001193125-26-210825-index.htm"},{"fact_type":"earnings_release","fact_key":"b89c0accbe84482cb277796dc11f24570da7a4b6","cik":1776111,"ticker":"MBX","company_name":"MBX Biosciences, Inc.","filed_at":"2026-03-12T23:59:59+00:00","payload":{"eps_text":null,"guidance_signal":"none","item_codes_triggered":["2.02"],"net_income_text":"$87.0 million","period_text":"the full year ended December 31, 2025","report_date":"2026-03-12","result_type":"reported_results","revenue_text":null},"claim":"MBX Biosciences, Inc. reported the full year ended December 31, 2025 results: net income $87.0 million.","evidence_excerpt":"Net loss for the full year ended December 31, 2025 was $87.0 million","confidence":0.9,"filing_url":"https://secwatch.observer/filing/0001193125-26-103118","anchor_url":"https://secwatch.observer/filing/0001193125-26-103118#claim-b89c0accbe84482cb277796dc11f24570da7a4b6","edgar_index_url":"https://www.sec.gov/Archives/edgar/data/1776111/000119312526103118/0001193125-26-103118-index.htm"},{"fact_type":"earnings_release","fact_key":"fef9976ad97a006e412aaf4874ffd74036bd2e3b","cik":1776111,"ticker":"MBX","company_name":"MBX Biosciences, Inc.","filed_at":"2026-03-12T23:59:59+00:00","payload":{"eps_text":null,"guidance_signal":"none","item_codes_triggered":["2.02"],"net_income_text":"$22.1 million","period_text":"the three months ended December 31, 2025","report_date":"2026-03-12","result_type":"reported_results","revenue_text":null},"claim":"MBX Biosciences, Inc. reported the three months ended December 31, 2025 results: net income $22.1 million.","evidence_excerpt":"Net loss for the three months ended December 31, 2025, was $22.1 million","confidence":0.9,"filing_url":"https://secwatch.observer/filing/0001193125-26-103118","anchor_url":"https://secwatch.observer/filing/0001193125-26-103118#claim-fef9976ad97a006e412aaf4874ffd74036bd2e3b","edgar_index_url":"https://www.sec.gov/Archives/edgar/data/1776111/000119312526103118/0001193125-26-103118-index.htm"},{"fact_type":"material_agreement","fact_key":"d49435ef9ac35d5b42b2801a54dd3dc4444ba3e9","cik":1776111,"ticker":"MBX","company_name":"MBX Biosciences, Inc.","filed_at":"2026-02-27T23:59:59+00:00","payload":{"action":"entry","agreement_name":"Lease Agreement","agreement_type":"lease","counterparty":"5 Burlington Woods, LLC","effective_date":"2026-02-24","item_codes_triggered":["1.01"],"value_text":"approximately $3.4 million"},"claim":"MBX Biosciences, Inc. entered into Lease Agreement with 5 Burlington Woods, LLC valued at approximately $3.4 million (effective 2026-02-24).","evidence_excerpt":"On February 24, 2026, MBX Biosciences, Inc. (the “Company”) entered into a lease agreement (the “Lease Agreement”) with 5 Burlington Woods, LLC (\"5 Burlington Woods\") to lease approximately 13,642 square feet of new office and laboratory space in Burlington, MA","confidence":0.9,"filing_url":"https://secwatch.observer/filing/0001193125-26-079286","anchor_url":"https://secwatch.observer/filing/0001193125-26-079286#claim-d49435ef9ac35d5b42b2801a54dd3dc4444ba3e9","edgar_index_url":"https://www.sec.gov/Archives/edgar/data/1776111/000119312526079286/0001193125-26-079286-index.htm"},{"fact_type":"executive_change","fact_key":"0b2cdb5428","cik":1776111,"ticker":"MBX","company_name":"MBX Biosciences, Inc.","filed_at":"2025-06-06T23:59:59+00:00","payload":{"action":"departed","action_category":"departure","departure_tone":"routine","effective_date":"2025-06-05","interim":false,"role":"Director","role_category":"director","successor_name":null,"successor_named":false},"claim":"Carl L. Gordon departed as Director at MBX Biosciences, Inc..","evidence_excerpt":"Also effective as of June 5, 2025 was the departure of Carl L. Gordon, Ph.D., CFA from the Company's board of directors.","confidence":0.95,"filing_url":"https://secwatch.observer/filing/0000950170-25-082697","anchor_url":"https://secwatch.observer/filing/0000950170-25-082697#claim-0b2cdb5428","edgar_index_url":"https://www.sec.gov/Archives/edgar/data/1776111/000095017025082697/0000950170-25-082697-index.htm"},{"fact_type":"executive_change","fact_key":"36d3cd482f","cik":1776111,"ticker":"MBX","company_name":"MBX Biosciences, Inc.","filed_at":"2025-04-07T23:59:59+00:00","payload":{"action":"appointed","action_category":"appointment","departure_tone":"not_applicable","effective_date":"2025-04-07","interim":false,"role":"director","role_category":"director","successor_name":null,"successor_named":false},"claim":"Steven L. 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