|  |  |  |  |  | S-ii |  |  | |
|  |  |  |  |  | S-1 |  |  | |
|  |  |  |  |  | S-3 |  |  | |
|  |  |  |  |  | S-5 |  |  | |
|  |  |  |  |  | S-7 |  |  | |
|  |  |  |  |  | S-9 |  |  | |
|  |  |  |  |  | S-10 |  |  | |
|  |  |  |  |  | S-11 |  |  | |
|  |  |  |  |  | S-13 |  |  | |
|  |  |  |  |  | S-15 |  |  | |
|  |  |  |  |  | S-21 |  |  | |
|  |  |  |  |  | S-29 |  |  | |
|  |  |  |  |  | S-29 |  |  | |
|  |  |  |  |  | S-30 |  |  | 
|  |  |  |  |  | 1 |  |  | |
|  |  |  |  |  | 2 |  |  | |
|  |  |  |  |  | 4 |  |  | |
|  |  |  |  |  | 6 |  |  | |
|  |  |  |  |  | 7 |  |  | |
|  |  |  |  |  | 8 |  |  | |
|  |  |  |  |  | 9 |  |  | |
|  |  |  |  |  | 13 |  |  | |
|  |  |  |  |  | 20 |  |  | |
|  |  |  |  |  | 22 |  |  | |
|  |  |  |  |  | 23 |  |  | |
|  |  |  |  |  | 27 |  |  | |
|  |  |  |  |  | 29 |  |  | |
|  |  |  |  |  | 29 |  |  | 
|  |  |  | Summary of Response |  |  |  |  |  | |||
| Cohort  |  |  | Partial  Response Rate |  |  | Complete  Response Rate |  |  |  | Total  Response |  | 
| 15 mg |  |  | 20% (1) |  |  | 80% (4) |  |  |  | 100% (5) |  | 
| 45 mg |  |  | 
                       —
                 |  |  | 
                  100% (3)
                 |  |  |  | 
                  100% (3)
                 |  | 
| Combined |  |  | 
                  12% (1)
                 |  |  | 
                   88% (7)
                 |  |  |  | 
                  100% (8)
                 |  | 
|  | Public offering price per share  |  |  |  |  |  |  |  |  |  | $ |  |  | |
|  | Net tangible book value per share as of December 31, 2023  |  |  |  | $ | 7.92 |  |  |  |  |  |  |  |  | 
|  | Increase in as adjusted net tangible book value per share attributable to this offering  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
|  | As adjusted net tangible book value per share after this offering  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
|  | Dilution per share to new investors participating in this offering  |  |  |  |  |  |  |  |  |  | $ |  |  |  | 
| Underwriter  |  |  | Number  of Shares |  |  | Number of  Pre-Funded Warrants |  | 
| Piper Sandler & Co.  |  |  |  |  |  |  |  | 
| Guggenheim Securities, LLC  |  |  |  |  |  |  |  | 
| Truist Securities, Inc.  |  |  |  |  |  |  |  | 
| H.C. Wainwright & Co., LLC  |  |  |  |  |  |  |  | 
| Needham & Company, LLC   |  |  |  |  |  |  |  | 
| Total  |  |  |  |  |  |  |  | 
|  |  |  | Per Share |  |  | Per  Pre-Funded Warrant |  |  | Total  Without Option Exercise |  |  | Total  With Full Option Exercise |  | ||||||||||||
| Public offering price  |  |  |  | $ |  |  |  |  | $ |  |  |  |  | $ |  |  |  |  | $ |  |  | ||||
| Underwriting discount and commissions  |  |  |  | $ |  |  |  |  | $ |  |  |  |  |  | $ |  |  |  |  |  | $ |  |  |  | |
| Proceeds, before expenses, to us  |  |  |  | $ |  |  |  |  | $ |  |  |  |  |  | $ |  |  |  |  |  | $ |  |  |  | |
![[MISSING IMAGE: lg_praxis-4c.jpg]](lg_praxis-4c.jpg) 
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|  |  |  |  |  | 9 |  |  | |
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![[MISSING IMAGE: lg_praxis-4c.jpg]](lg_praxis-4c.jpg) 
        |  | H.C. Wainwright & Co. |  |  | Needham & Company |  |