X0306 4 2022-03-18 0001588978 PROCEPT BioRobotics Corp PRCT 0001103804 VIKING GLOBAL INVESTORS LP 55 RAILROAD AVENUE GREENWICH CT 06830 true 0001629482 Viking Global Opportunities Illiquid Investments Sub-Master LP 55 RAILROAD AVENUE GREENWICH CT 06830 true 0001629472 Viking Global Opportunities Portfolio GP LLC 55 RAILROAD AVENUE GREENWICH CT 06830 true 0001629476 Viking Global Opportunities GP LLC 55 RAILROAD AVENUE GREENWICH CT 06830 true 0001883348 DRAGSA 88 LLC 55 RAILROAD AVE GREENWICH CT 06830 true 0001133006 HALVORSEN OLE ANDREAS 55 RAILROAD AVENUE GREENWICH CT 06830 true 0001711393 Shabet Rose Sharon 55 RAILROAD AVENUE GREENWICH CT 06830 true 0001886738 Viking Global Opportunities Parent GP LLC 55 RAILROAD AVE GREENWICH CT 06830 true 0001621842 Ott David C. 55 RAILROAD AVENUE GREENWICH CT 06830 true Common Stock 2022-03-18 4 S 0 1147205 29.9 D 3360687 I See Explanation of Responses Common Stock 2022-03-18 4 S 0 101795 29.9 D 298205 I See Explanation of Responses 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") 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 and vehicles, including Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund") and DRAGSA 88 LLC ("DRAGSA 88"). Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet (collectively the "Reporting Persons") may be deemed to beneficially own all of the securities reported on this form. These shares are held directly by Opportunities Fund. VGI provides managerial services to Opportunities Fund. Because of the relationship between VGI and Opportunities Fund, VGI may be deemed to beneficially own the shares held directly by Opportunities Fund. 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. 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 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose. These shares are held directly by DRAGSA 88. VGI provides managerial services to DRAGSA 88. Because of the relationship between VGI and DRAGSA 88, VGI may be deemed to beneficially own the shares held directly by DRAGSA 88. The membership interests of DRAGSA 88 are held by Viking Global Opportunities Intermediate LP and Viking Global Opportunities LP. Opportunities GP is the general partner of Viking Global Opportunities LP and Viking Global Opportunities Intermediate LP. Because of the relationship between Opportunities GP and DRAGSA 88, Opportunities GP may be deemed to beneficially own the shares of Common Stock held directly by DRAGSA 88. (7) The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16a-3(j) under the Exchange Act. (8) Scott M. Hendler is signing on behalf of Mr. Halvorsen, Mr. Ott and Ms. Shabet, each individually and as an Executive Committee Member of VIKING GLOBAL PARTNERS LLC, on behalf of VIKING GLOBAL INVESTORS LP (for itself and as manager of DRAGSA 88 LLC), and as an Executive Committee Member of VIKING GLOBAL OPPORTUNITIES PARENT GP LLC, on behalf of itself and VIKING GLOBAL OPPORTUNITIES GP LLC, VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC, and VIKING GLOBAL OPPORTUNITIES ILLIQUID INVESTMENTS SUB-MASTER LP, pursuant to authorization and designation letters dated February 9, 2021, which were filed with the Securities and Exchange Commission on June 7, 2021. /s/ Scott M. Hendler signing on behalf of O. Andreas Halvorsen (7) (8) 2022-03-22 /s/ Scott M. Hendler signing on behalf of David C. Ott (7) (8) 2022-03-22 /s/ Scott M. Hendler signing on behalf of Rose S. Shabet (7) (8) 2022-03-22