Adaptive Biotechnologies Corp — Director's Dealing 2019

Jun 27, 2019

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Adaptive Biotechnologies Corp (ADPT)
CIK: 0001478320
Period of Report: 2019-06-26

Reporting Person: VIKING GLOBAL PERFORMANCE LLC (10% Owner)
Reporting Person: Viking Global Equities LP (10% Owner)
Reporting Person: Viking Global Equities II LP (10% Owner)
Reporting Person: VGE III Portfolio Ltd. (10% Owner)
Reporting Person: Viking Global Equities Master Ltd. (10% Owner)
Reporting Person: Viking Long Fund GP LLC (10% Owner)
Reporting Person: Viking Long Fund Master Ltd. (10% Owner)
Reporting Person: HALVORSEN OLE ANDREAS (10% Owner)
Reporting Person: Ott David C. (10% Owner)
Reporting Person: Shabet Rose Sharon (10% Owner)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1425000	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Series D Preferred Stock	$		Common Stock (18908945)		Indirect
Series E Preferred Stock	$		Common Stock (15524350)		Indirect
Series F Preferred Stock	$		Common Stock (2007740)		Indirect
Series F-1 Preferred Stock	$		Common Stock (290572)		Indirect

Footnotes

F1: Pursuant to the Amended and Restated Certificate of Incorporation of the Issuer, upon the closing of its initial public offering (the "IPO"), each share of convertible preferred stock will be automatically converted into shares of common stock of the Issuer ("Common Stock") on a one-to-one basis. The 38,156,607 shares of stock reported on this form will convert into 38,156,607 shares of Common Stock upon the closing of the IPO.

F2: O. Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), Viking Global Performance LLC ("VGP"), Viking Long Fund GP LLC ("VLFGP") and Viking Global Opportunities GP LLC ("Opportunities GP"), the sole owner of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"). VGI provides managerial services to various investment funds, including Viking Global Equities II LP ("VGE II"), ("VGEM"), Viking Long Fund Master Ltd. ("VLFM") and Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund," and together with VLFM, VGEM and VGE II, the "Viking Funds").

F3: VGP is the general partner of VGE II. Opportunities Portfolio GP is the general partner of Opportunities Fund. VLFGP serves as the investment manager of VLFM. Each of the Viking Funds, VGI, VGP, VLFGP, Opportunities Portfolio GP, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively, the "Reporting Persons") may be deemed to beneficially own the shares reported on this form.

F4: VGEM directly holds 14,006,625 shares of Series D Preferred Stock, 10,789,973 shares of Series E Preferred Stock, 1,411,467 shares of Series F Preferred Stock and 197,888 shares of Series F-1 Preferred Stock. VGE II directly holds 285,850 shares of Series D Preferred Stock, 220,204 shares of Series E Preferred Stock, 28,805 shares of Series F Preferred Stock and 4,039 shares of Series F-1 Preferred Stock. VLFM directly holds 4,616,470 shares of Series D Preferred Stock, 4,514,173 shares of Series E Preferred Stock, 567,468 shares of Series F Preferred Stock and 88,645 shares of Series F-1 Preferred Stock. Opportunities Fund directly holds 1,425,000 of common stock.

F5: VGI provides managerial services to the Viking Funds. Because of the relationship between VGI and the Viking Funds, VGI may be deemed to beneficially own the shares directly held by the Viking Funds. VGP is the general partner of VGE II and the investment manager of VGEM. Because of the relationships between VGP and VGE II and VGEM, respectively, VGP may be deemed to beneficially own the shares directly held by VGE II and VGEM. VLFGP serves as the investment manager of VLFM. Because of the relationship between VLFGP and VLFM, VLFGP may be deemed to beneficially own the shares directly held by VLFM.

F6: Opportunities Portfolio GP is the general partner of Opportunities Fund. Because of the relationship between Opportunities Portfolio GP and Opportunities Fund, Opportunities Portfolio GP may be deemed to beneficially own the shares held directly by Opportunities Fund. Opportunities GP is the sole owner of Opportunities Portfolio GP. Because of the relationship between Opportunities GP and Opportunities Portfolio GP, Opportunities GP may be deemed to beneficially own the shares held directly by Opportunities Fund.

F7: The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.