{"schema_version":"secwatch.filing_event.v1","accession":"0000077543-23-000009","form_type":"8-K","ticker":"TPC","cik":"0000077543","company_name":"TUTOR PERINI CORP","filed_at":"2023-03-10T23:59:59+00:00","discovered_at":"2026-05-14T18:03:48.069890+00:00","generated_at":"2026-06-18T06:05:15.573205+00:00","sec_items":["5.03","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Tutor Perini amends bylaws to tighten stockholder nomination and proposal rules","bullets":["Adopted Amended and Restated By-Laws effective March 8, 2023, with enhanced procedural and disclosure requirements.","Nomination notices must be delivered within 120 to 90 days before prior year's annual meeting anniversary.","Stockholders must disclose intent to solicit proxies under Rule 14a-19 and provide compliance evidence.","Limits number of director candidates a stockholder may nominate to number of seats up for election.","Board-exclusive white proxy cards; stockholder solicitations must use a different color."],"urls":{"canonical":"https://secwatch.observer/filing/0000077543-23-000009","json":"https://secwatch.observer/filing/0000077543-23-000009.json","markdown":"https://secwatch.observer/filing/0000077543-23-000009.md","text":"https://secwatch.observer/filing/0000077543-23-000009.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/77543/000007754323000009/0000077543-23-000009-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/77543/000007754323000009/tpc-20230308.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-18T06:05:15.573205+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":"590a57cd0526e1395b1ae9d0669b20cbf7b4d5cf","claim":"TUTOR PERINI CORP: Amended and restated bylaws enhancing procedural and disclosure requirements for director nominations and stockholder proposals, including alignment with Rule 14a-19 (effective 2023-03-08).","evidence_excerpt":"The Board of Directors (the “Board”) of Tutor Perini Corporation (the “Company”) periodically reviews the Board’s and Company’s governance documents, including the Company’s bylaws. On March 8, 2023, the Company adopted and approved amended and restated bylaws (the “Amended and Restated By-Laws”), effective immediately.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/77543/000007754323000009/0000077543-23-000009-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2023-03-08"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}