0001681087 2025-11-06 2025-11-06 0001681087 false 8-K 2025-11-06 Tectonic Therapeutic, Inc. DE 001-38537 81-0710585 490 Arsenal Way Suite 210 Watertown MA 02472 (339) 666-3320 false false false false Common Stock, $0.0001 par value per share TECX NASDAQ false