secwatch.observer — SEC 8-K summary ====================================== Issuer: Cytek Biosciences, Inc. (CTKB) CIK: 0001831915 Form: 8-K Filed at: 2026-09-29T20:06:24+00:00 Accession: 0001193125-26-407330 Event type: regulatory Sentiment: neutral Materiality: 0.30 Item codes: 5.03, 9.01 LLM model: deepseek-v4.1-flash:cloud@v2 Cytek Biosciences board adopts amended and restated bylaws effective September 23, 2026 -------------------------------------------------------------------------------- - Board unanimously adopted amended and restated bylaws on September 23, 2026, effective immediately; Exhibit 3.1 attached to the 8-K. - Changes include removing Rule 14a-8 prefatory clause and adding disclosure/representation requirements for stockholder proposal proponents and director nominees. - Bylaws expand chairperson authority to disregard non-compliant nominations and incorporate Rule 14a-19 universal proxy rules; add special meeting advance notice procedures. - Also update adjournment notices for virtual/remote meetings and stockholder list procedures under Delaware General Corporation Law; CEO Wenbin Jiang signed on September 29, 2026. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1831915/000119312526407330/0001193125-26-407330-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1831915/000119312526407330/d94407d8k.htm HTML page: https://secwatch.observer/filing/0001193125-26-407330 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer