X0508 4 2023-08-18 0 0001253176 VAPOTHERM INC VAPO 0001435005 Army Joseph 100 DOMAIN DRIVE EXETER NH 03833 1 1 0 0 President and CEO 0 Common Stock 2023-08-18 4 P 0 7489 3.0736 A 249585 D Common Stock 2023-08-21 4 P 0 27604 3.6242 A 277189 D Common Stock 2023-08-22 4 P 0 14907 3.9847 A 292096 D Common Stock 40625 I Kimberly D. Army Revocable Trust Common Stock 62 I By Spouse The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.00 to $3.10, inclusive. The reporting person undertakes to provide to Vapotherm, Inc., any security holder of Vapotherm, Inc., 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 ranges set forth in this footnote (1) to this Form 4. Includes 1,154 shares that will be issued over time upon vesting pursuant to restricted stock units granted under the Vapotherm, Inc. 2018 Equity Incentive Plan, as amended from time to time. On August 18, 2023, 1-for-8 reverse split of the common stock of Vapotherm, Inc. occurred resulting in a decrease in the number of shares held by the reporting person. In addition, proportionate adjustments have been made to the reporting person's outstanding equity awards, including the number of restricted stock units as reflected on this Form 4. Accordingly, all amounts of securities reported on this Form 4 have been adjusted to reflect the 1-for-8 reverse stock split. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.405 to $3.75, inclusive. The reporting person undertakes to provide to Vapotherm, Inc., any security holder of Vapotherm, Inc., 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 ranges set forth in this footnote (4) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.915 to $4.00, inclusive. The reporting person undertakes to provide to Vapotherm, Inc., any security holder of Vapotherm, Inc., 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 ranges set forth in this footnote (5) to this Form 4. /s/ Adrain Bryant, as Attorney In Fact 2023-08-22