X0306 4 2022-03-16 0 0001633070 Axcella Health Inc. AXLA 0001803539 Societe des Produits Nestle S.A. AVENUE NESTLE 55 CH-1800, VEVEY V8 SWITZERLAND 0 0 1 0 0000792990 NESTLE SA AVENUE NESTLE 55 CH-1800, VEVEY V8 SWITZERLAND 0 0 1 0 Common Stock 2022-03-16 4 P 0 3141361 1.91 A 7446902 I See Footnote Consists of 7,446,902 shares of Common Stock held by Societe des Produits Nestle S.A. ("SPN"). SPN is a wholly owned subsidiary of Nestle S.A. ("Nestle"). SPN and Nestle may be deemed to share voting and investment power with respect to all shares of Common Stock. Nestle disclaims beneficial ownership of such shares of Common Stock except to the extent of its pecuniary interest therein. /s/ NESTLE S.A. By: Name: Gregory Behar, Title: Deputy Executive Vice President 2022-03-16 /s/ SOCIETE DES PRODUITS NESTLE S.A. By: Name: Claudio Kuoni, Title: Vice President 2022-03-16