June 2025 monthly summary for tc39/test262 and tc39/ecma262. Deliveries focused on test coverage and CI tooling that strengthen quality gates and reduce risk for releases. Key changes: - tc39/test262: Test coverage update for Ctor Throws (ctor-throws.js) with a minor description modification. No functional changes to Promise.prototype.then behavior. - tc39/ecma262: CI tooling upgrade to ESMeta v0.6.1, updating the workflow to fetch the latest ESMeta commit for type checking. Major bugs fixed: none reported this month; efforts centered on test coverage and tooling reliability. Overall impact and Accomplishments: Improved test coverage for constructor throw scenarios and ensured the CI type-checking step uses the latest tooling, leading to earlier detection of regressions and more reliable builds. This supports faster, safer releases and higher confidence in ECMAScript compliance. Technologies/skills demonstrated: JavaScript/ECMAScript test suites (Test262), CI/CD workflow updates, ESMeta integration for type checking, commit hygiene and traceability, cross-repo coordination.