X0306 4 2021-05-24 0 0001679363 Morphic Holding, Inc. MORF 0001055624 SPRINGER TIMOTHY A C/O MORPHIC HOLDING, INC. 35 GATEHOUSE DRIVE, A2 WALTHAM MA 02451 1 0 1 0 Common Stock 2021-05-24 4 P 0 5024 45.4288 A 712338 I By TAS Partners LLC Common Stock 2021-05-24 4 P 0 27426 46.5431 A 739764 I By TAS Partners LLC Common Stock 2021-05-24 4 P 0 7550 47.0975 A 747314 I By TAS Partners LLC Common Stock 2021-05-25 4 P 0 56559 45.831 A 803873 I By TAS Partners LLC Common Stock 2021-05-25 4 P 0 8441 46.1113 A 812314 I By TAS Partners LLC Common Stock 2021-05-26 4 P 0 22587 46.9303 A 834901 I By TAS Partners LLC Common Stock 2021-05-26 4 P 0 2413 47.3623 A 837314 I By TAS Partners LLC Common Stock 4565191 D Common Stock 42873 I By Spouse The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $44.98 to $45.955 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The reporting person is the manager of TAS Partners LLC and has sole voting and dispositive power over such shares. The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $45.98 to $46.97 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $46.98 to $47.33 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $45.04 to $46.0317 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $46.04 to $46.32 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $46.22 to $47.215 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $47.24 to $47.67 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ Robert Farrell as attorney-in-fact for Timothy A. Springer 2021-05-26