Certified by Founder Lodge 
                                        
                                        Brimstone
 
                                                 United States  -  Oakland, CA 
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                                                                                    1 Disclosed Funding Rounds $55,000,000
                                            0 Participating Investments
- 
                                                Founded date 
                                                
2019
 - 
                                                Operating Status 
                                                
Active
 - 
                                                Last Funding Type 
                                                
Seed
 - 
                                                Company Type 
                                                
For Profit
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                                            Cement is responsible for about the same amount of greenhouse gas emissions as all of the cars on the road today worldwide. Cement has been widely considered one of the most difficult materia
                                        
                                        
                                        
                                                                                
                                        
                                                                                | Date | Round | Raised | Participating Investors | 
|---|---|---|---|
| May, 05 ,2022 | Series A | $55,000,000 | 
                                                
 S2G Ventures
                                                                                
 Collaborative Fund
                                                                                
 Breakthrough Energy
                                                                                
 DCVC
                                                                                
 Osage University Partners (OUP)
                                                                                
 ACCELR8
                                                                                
 Impact Science Ventures
                                                                                
 Gatemore Capital Management
                                                                                
                                                                            
                                                                        
                                Helex |  $3,500,000  | (Nov 4, 2025)
                                                                        
                                xMEMS |  $21,000,000  | (Nov 4, 2025)
                                                                        
                                catalyx space |  $5,400,000  | (Nov 4, 2025)
                                                                        
                                Cephia AI |  $4,000,000  | (Nov 4, 2025)
                                                                        
                                Ornn |  $5,700,000  | (Nov 4, 2025)