Consulting Agreement Renewal Letters between BioTransplant Incorporated and Dr. David H. Sachs (1999–2002)

Summary

BioTransplant Incorporated and Dr. David H. Sachs entered into annual consulting agreements, renewed each year from 1999 to 2002. Each renewal letter confirms Dr. Sachs’s continued consulting services for a one-year term, with the compensation adjusted annually based on the consumer price index. Dr. Sachs is required to sign and return a copy of each letter to confirm acceptance. The agreement outlines the consulting rate for each year and reflects the ongoing professional relationship between the parties.

EX-10.19 2 a2041873zex-10_19.txt EXHIBIT 10.19 EXHIBIT 10.19 [Letterhead] BIOTRANSPLANT - ------------- [LOGO] INCORPORATED December 1, 1998 Building 75, 3rd Avenue Charlestown Navy Yard Charlestown, MA 02129 Tel: 617 ###-###-#### FAX 617 ###-###-#### David H. Sachs, M.D. Director, Transplantation Biology Research Center Department of Surgery Massachusetts General Hospital Charlestown, MA 02129 Dear David: As January 1, 1999 completes eight years of your consulting arrangements with us, BioTransplant is pleased to renew your contract for the coming year (1/1/99-1/1/2000). Per our agreement, the consumer price index increased by 1.5% and the consulting rate is $92,704.00 for the coming year. Please sign both copies of this letter, return one copy to me and keep the other for your records. David, based on all the hard work that we've done to date, 1999 should finally achieve our proof of principle! Best Wishes, /S/ Elliot Lebowitz - -------------------------- Elliot Lebowitz, Ph.D. President and CEO Accepted by: /S/ David H. Sachs - -------------------------- David H. Sachs, M.D. 12/15/98 - -------------------------- Date [Letterhead] BIOTRANSPLANT - ------------- [LOGO] INCORPORATED January 5, 2000 Building 75, 3rd Avenue Charlestown Navy Yard Charlestown, MA 02129 Tel: 617 ###-###-#### FAX 617 ###-###-#### David H. Sachs, M.D. Professor of Surgery (Immunology), Harvard Medical School Director, Transplantation Biology Research Center Massachusetts General Hospital MGH-East, Building 149-9019, 13th Street Boston, MA 02129 Dear David: As January 1, 2000 completes nine years of your consulting arrangements with us, BioTransplant is pleased to renew your contract for the coming year (1/1/2000-1/1/2001). Per our agreement, the consumer price index increased by 2.7% and the consulting rate is $95,207.00 for the coming year. Please sign both copies of this letter, return one copy to me and keep the other for your records. David, based on all the hard work that we've done to date, 2000 should finally achieve our proof of principle! Best Wishes, /S/ Elliot Lebowitz - -------------------------- Elliot Lebowitz, Ph.D. President and CEO Accepted by: /S/ David H. Sachs - ------------------------------ Name 1/11/2000 - --------------------------- Date [Letterhead] BIOTRANSPLANT - ------------- [LOGO] INCORPORATED January 8, 2001 Building 75, 3rd Avenue Charlestown Navy Yard Charlestown, MA 02129 Tel: 617 ###-###-#### FAX 617 ###-###-#### David H. Sachs, M.D. Professor of Surgery (Immunology), Harvard Medical School Director, Transplantation Biology Research Center Massachusetts General Hospital MGH-East, Building 149-9019, 13th Street Boston, MA 02129 Dear David: As January 1, 2001 completed ten years of your consulting arrangements with us, BioTransplant is pleased to renew your contract for the coming year (1/1/2001-1/1/2002). Per our agreement, the consumer price index increased by 3.4% and the consulting rate is $98,445.00 for the coming year. Please sign both copies of this letter, return one copy to me and keep the other for your records. Best wishes, /s/ Elliot Lebowitz - -------------------------------- Elliot Lebowitz, Ph.D. President and CEO Accepted by: /S/ David H. Sachs - -------------------------------- Name - -------------------------------- Date