0001104659-21-097601.txt : 20210729 0001104659-21-097601.hdr.sgml : 20210729 20210729163054 ACCESSION NUMBER: 0001104659-21-097601 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210727 FILED AS OF DATE: 20210729 DATE AS OF CHANGE: 20210729 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: RA Capital Healthcare Fund LP CENTRAL INDEX KEY: 0001315082 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40632 FILM NUMBER: 211127870 BUSINESS ADDRESS: STREET 1: 200 BERKELEY STREET STREET 2: 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 6177782500 MAIL ADDRESS: STREET 1: 200 BERKELEY STREET STREET 2: 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 FORMER NAME: FORMER CONFORMED NAME: RA Capital Biotech Fund LP DATE OF NAME CHANGE: 20050121 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: RA CAPITAL MANAGEMENT, L.P. CENTRAL INDEX KEY: 0001346824 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40632 FILM NUMBER: 211127871 BUSINESS ADDRESS: STREET 1: 200 BERKELEY STREET, 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-778-2500 MAIL ADDRESS: STREET 1: 200 BERKELEY STREET, 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 FORMER NAME: FORMER CONFORMED NAME: RA CAPITAL MANAGEMENT, LLC DATE OF NAME CHANGE: 20051213 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Kolchinsky Peter CENTRAL INDEX KEY: 0001384859 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40632 FILM NUMBER: 211127868 MAIL ADDRESS: STREET 1: 200 BERKELEY STREET STREET 2: 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Shah Rajeev M. CENTRAL INDEX KEY: 0001619841 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40632 FILM NUMBER: 211127867 MAIL ADDRESS: STREET 1: 200 BERKELEY STREET STREET 2: 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: RA Capital Nexus Fund II, L.P. CENTRAL INDEX KEY: 0001825376 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40632 FILM NUMBER: 211127869 BUSINESS ADDRESS: STREET 1: 200 BERKELEY STREET, 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-778-2500 MAIL ADDRESS: STREET 1: 200 BERKELEY STREET, 18TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Cytek Biosciences, Inc. CENTRAL INDEX KEY: 0001831915 STANDARD INDUSTRIAL CLASSIFICATION: LABORATORY ANALYTICAL INSTRUMENTS [3826] IRS NUMBER: 472547526 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 46107 LANDING PARKWAY CITY: FREMONT STATE: CA ZIP: 94538 BUSINESS PHONE: (877) 922-9835 MAIL ADDRESS: STREET 1: 46107 LANDING PARKWAY CITY: FREMONT STATE: CA ZIP: 94538 FORMER COMPANY: FORMER CONFORMED NAME: Cytek BioSciences, Inc. DATE OF NAME CHANGE: 20201110 4 1 tm2123652-1_4.xml OWNERSHIP DOCUMENT X0306 4 2021-07-27 0 0001831915 Cytek Biosciences, Inc. CTKB 0001346824 RA CAPITAL MANAGEMENT, L.P. 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 1 0 0 0 0001315082 RA Capital Healthcare Fund LP 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 1 0 0 0 0001825376 RA Capital Nexus Fund II, L.P. 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 1 0 0 0 0001384859 Kolchinsky Peter C/O RA CAPITAL MANAGEMENT, L.P. 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 1 0 0 0 0001619841 Shah Rajeev M. C/O RA CAPITAL MANAGEMENT, L.P. 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 1 0 0 0 Common Stock 2021-07-27 4 C 0 5150751 A 5150751 I See footnotes Common Stock 2021-07-27 4 P 0 2762786 17.00 A 7913537 I See footnotes Common Stock 2021-07-27 4 C 0 998553 A 998553 I See footnotes Common Stock 2021-07-27 4 P 0 187214 17.00 A 1185767 I See footnotes Common Stock 2021-07-27 4 C 0 507724 A 507724 I See footnotes Series D Preferred Stock 2021-07-27 4 C 0 5150751 0 D Common Stock 5150751 0 I See footnotes Series D Preferred Stock 2021-07-27 4 C 0 998553 0 D Common Stock 998553 0 I See footnotes Series D Preferred Stock 2021-07-27 4 C 0 507724 0 D Common Stock 507724 0 I See footnotes On July 27, 2021, each share of Series D Preferred Stock (the "Preferred Stock") converted into one share of Common Stock of the Issuer without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date. These securities are held directly by RA Capital Healthcare Fund, L.P. (the "Fund"). These securities are held directly by RA Capital Nexus Fund II, L.P. (the "Nexus Fund II"). These securities are held directly by a separately managed account (the "Account"). RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund, the Nexus Fund II and the Account. The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. Theresa Cameron, a Principal of the Adviser, serves on the Issuer's board of directors. /s/ Peter Kolchinsky, Manager of RA Capital Management, L.P. 2021-07-29 /s/ Peter Kolchinsky, Manager of RA Capital Healthcare Fund GP, LLC the General Partner of RA Capital Healthcare Fund, L.P. 2021-07-29 /s/ Peter Kolchinsky, Manager of RA Capital Nexus Fund II GP, LLC the General Partner of RA Capital Nexus Fund II, L.P. 2021-07-29 /s/ Peter Kolchinsky, individually 2021-07-29 /s/ Rajeev Shah, individually 2021-07-29