X0206 3 2018-05-03 0 0001366527 Carbon Black, Inc. CBLK 0001013713 MAEDER PAUL A C/O HIGHLAND CAPITAL PARTNERS ONE BROADWAY, 16TH FLOOR CAMBRIDGE MA 02142 1 0 0 0 Common Stock 755904 I By Highland Capital Partners VI Limited Partnership Common Stock 414297 I By Highland Capital Partners VI-B Limited Partnership Common Stock 37436 I By Highland Entrepreneurs' Fund VI Limited Partnership Series B Convertible Preferred Stock Common Stock 2397218 I By Highland Capital Partners VI Limited Partnership Series B Convertible Preferred Stock Common Stock 1314233 I By Highland Capital Partners VI-B Limited Partnership Series B Convertible Preferred Stock Common Stock 118736 I By Highland Entrepreneurs' Fund VI Limited Partnership Series C Convertible Preferred Stock Common Stock 772043 I By Highland Capital Partners VI Limited Partnership Series C Convertible Preferred Stock Common Stock 423259 I By Highland Capital Partners VI-B Limited Partnership Series C Convertible Preferred Stock Common Stock 38240 I By Highland Entrepreneurs' Fund VI Limited Partnership Series D Convertible Preferred Stock Common Stock 344900 I By Highland Capital Partners VI Limited Partnership Series D Convertible Preferred Stock Common Stock 189085 I By Highland Capital Partners VI-B Limited Partnership Series D Convertible Preferred Stock Common Stock 17083 I By Highland Entrepreneurs' Fund VI Limited Partnership Series E Convertible Preferred Stock Common Stock 574937 I By Highland Capital Partners VII Limited Partnership Series E Convertible Preferred Stock Common Stock 139318 I By Highland Capital Partners VII-B Limited Partnership Series E Convertible Preferred Stock Common Stock 202891 I By Highland Capital Partners VII-C Limited Partnership Series E Convertible Preferred Stock Common Stock 18015 I By Highland Entrepreneurs' Fund VII Limited Partnership Series F Convertible Preferred Stock Common Stock 518381 I By Highland Capital Partners VII Limited Partnership Series F Convertible Preferred Stock Common Stock 125613 I By Highland Capital Partners VII-B Limited Partnership Series F Convertible Preferred Stock Common Stock 182933 I By Highland Capital Partners VII-C Limited Partnership Series F Convertible Preferred Stock Common Stock 16243 I By Highland Entrepreneurs' Fund VII Limited Partnership The shares are held directly by Highland Capital Partners VI Limited Partnership ("Highland Capital VI"). The general partner of Highland Capital VI is Highland Management Partners VI Limited Partnership ("HMP VI LP"). The general partner of HMP VI LP is Highland Management Partners VI, Inc. ("Highland Management"). Mr. Maeder is a managing director of Highland Management. Mr. Maeder disclaims Section 16 beneficial ownership of such securities, except to the extent, if any, of his pecuniary interest therein. This report shall not be deemed to be an admission that Mr. Maeder is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The shares are held directly by Highland Capital Partners VI-B Limited Partnership ("Highland Capital VI-B"). The general partner of Highland Capital VI-B is HMP VI LP. Mr. Maeder disclaims Section 16 beneficial ownership of such securities, except to the extent, if any, of his pecuniary interest therein. This report shall not be deemed to be an admission that Mr. Maeder is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The shares are held directly by Highland Entrepreneurs' Fund VI Limited Partnership ("Highland VI Entrepreneurs' Fund"). The general partner of Highland VI Entrepreneurs' Fund is HEF VI Limited Partnership ("HEF"). The general partner of HEF is Highland Management. Mr. Maeder disclaims Section 16 beneficial ownership of such securities, except to the extent, if any, of his pecuniary interest therein. This report shall not be deemed to be an admission that Mr. Maeder is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The shares are held directly by Highland Capital Partners VII Limited Partnership ("Highland Capital VII"). The general partner of Highland Capital VII is Highland Management Partners VII Limited Partnership ("HMP VII LP"). The general partner of HMP VII LP is Highland Management Partners VII, LLC ("HMP VII LLC"). Mr. Maeder is a managing director of HMP VII LLC. Mr. Maeder disclaims Section 16 beneficial ownership of such securities, except to the extent, if any, of his pecuniary interest therein. This report shall not be deemed to be an admission that Mr. Maeder is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The shares are held directly by Highland Capital Partners VII-B Limited Partnership ("Highland Capital VII-B"). The general partner of Highland Capital VII-B is HMP VII LP. Mr. Maeder disclaims Section 16 beneficial ownership of such securities, except to the extent, if any, of his pecuniary interest therein. This report shall not be deemed to be an admission that Mr. Maeder is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The shares are held directly by Highland Capital Partners VII-C Limited Partnership ("Highland Capital VII-C"). The general partner of Highland Capital VII-C is HMP VII LP. Mr. Maeder disclaims Section 16 beneficial ownership of such securities, except to the extent, if any, of his pecuniary interest therein. This report shall not be deemed to be an admission that Mr. Maeder is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The shares are held directly by Highland Entrepreneurs' Fund VII Limited Partnership ("Highland VII Entrepreneurs' Fund"). The general partner of Highland VII Entrepreneurs' Fund is HMP VII LP. Mr. Maeder disclaims Section 16 beneficial ownership of such securities, except to the extent, if any, of his pecuniary interest therein. This report shall not be deemed to be an admission that Mr. Maeder is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. Each share of preferred stock is convertible into common stock on a 1-for-2 basis and has no expiration date. Upon the closing of the Issuer's initial public offering, all shares of preferred stock will automatically be converted into shares of Common Stock of the Issuer. Exhibit 24 - Power of Attorney /s/ Eric Pyenson, Attorney-in-Fact 2018-05-03