Item 8.01 Other Events.

In connection with the filing of a registration statement on Form S-3 with the Securities and Exchange Commission (the "SEC"), Seagen Inc. (the "Company") is updating the risk factor disclosure contained in its prior public filings, including the risk factor disclosure included under the heading "Item 1A. Risk Factors" in the Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 2020, filed with the SEC on October 30, 2020, primarily as a result of amendments to Item 105 of Regulation S-K adopted by the SEC which became effective on December 9, 2020. The updated risk factor disclosure is filed herewith as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.




(d)  Exhibits



99.1     Updated Company Risk Factors

104    Cover page interactive data file (formatted as Inline XBRL)

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