X0306 4 2021-10-18 0 0001531177 Sight Sciences, Inc. SGHT 0001870875 Encrantz Staffan C/O SIGHT SCIENCES, INC. 4040 CAMPBELL AVE, SUITE 100 MENLO PARK CA 94025 1 0 0 0 Common Stock 2021-10-18 4 P 0 527048 24.00 A 3497118 I See footnote Common Stock 632456 I See footnote On September 2, 2021, the Reporting Person entered into a Stock Purchase Agreement to acquire these shares. All material conditions to the completion of the purchase were satisfied as of October 18, 2021. The closing of the stock purchase has not yet occurred. These shares are held of record by Allegro Investment Fund, L.P. ("Allegro Investment Fund"). The Reporting Person is the President of Allegro Investment Inc., the investment manager of Allegro Investment Fund, and may be deemed to beneficially own the shares held by Allegro Investment Fund. The Reporting Person disclaims beneficial ownership of the shares held by Allegro Investment Fund (and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares for purposes of Section 16 or for any other purpose), except to the extent of his pecuniary interest therein, if any. These shares are held of record by Allegro Investors LLC ("Allegro Investors"). The Reporting Person is a member of Allegro Investors and may be deemed to beneficially own the shares held by Allegro Investors. /s/ Jeremy Hayden, Attorney-in-Fact for Staffan Encrantz 2021-10-20