Attn: General Partner ARCH Venture Fund VI, L.P.

ALL ALPHAMAVEN CONTENT IS FOR INFORMATIONAL PURPOSES ONLY. CONTENT POSTED BY MEMBERS DOES NOT NECESSARILY REFLECT THE OPINION OR BELIEFS OF ALPHAMAVEN AND HAS NOT ALWAYS BEEN INDEPENDENTLY VERIFIED BY ALPHAMAVEN. PAST PERFORMANCE IS NOT INDICATIVE OF FUTURE RESULTS. THIS IS NOT A SOLICITATION FOR INVESTMENT. THE MATERIAL PROVIDED HEREIN IS FOR INFORMATIONAL PURPOSES ONLY. IT DOES NOT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY INTERESTS OF ANY FUND OR ANY OTHER SECURITIES. ANY SUCH OFFERINGS CAN BE MADE ONLY IN ACCORDANCE WITH THE TERMS AND CONDITIONS SET FORTH IN THE INVESTMENT'S PRIVATE PLACEMENT MEMORANDUM. PRIOR TO INVESTING, INVESTORS ARE STRONGLY URGED TO REVIEW CAREFULLY THE PRIVATE PLACEMENT MEMORANDUM (INCLUDING THE RISK FACTORS DESCRIBED THEREIN), THE LIMITED PARTNERSHIP AGREEMENT AND THE SUBSCRIPTION DOCUMENTS, TO ASK SUCH QUESTIONS OF THE INVESTMENT MANAGER AS THEY DEEM APPROPRIATE, AND TO DISCUSS ANY PROSPECTIVE INVESTMENT IN THE FUND WITH THEIR LEGAL AND TAX ADVISERS IN ORDER TO MAKE AN INDEPENDENT DETERMINATION OF THE SUITABILITY AND CONSEQUENCES OF AN INVESTMENT.