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Related Parties
 3 Months Ended
Mar. 31, 2026
Related Party Transactions [Abstract]  
Related Parties Related Parties
The Company has a commercial lease agreement with Kipee International, Inc., a related party controlled by a principal stockholder and member of the Company’s board of directors, for Silvaco's corporate office in Santa Clara, California. In connection with this lease arrangement, which expires on April 30, 2028, the Company recorded rent expense of $0.1 million in each of the three months ended March 31, 2026, and 2025. The Company's right-of-use asset and operating lease liability for this property is $0.5 million as of March 31, 2026.
The Company has international office leases with New Horizons (Cambridge) LTD (“NHC”) and New Horizons France (“NHF”) in Cambridgeshire, England and Grenoble, France, respectively. NHC and NHF are real estate entities owned and controlled by a principal stockholder and member of the Company’s board of directors. In connection with these lease arrangements, the Company recorded rent expense of $0.1 million in each of the three months ended March 31, 2026, and 2025. The Company's right-of-use asset and operating lease liability under the NHF lease, which expires on April 30, 2026, is $5.0 thousand as of March 31, 2026.
During the three months ended March 31, 2026, the Company terminated its existing lease with NHC and executed a new office lease with NHC. Accordingly, the Company de-recognized the right-of-use asset and operating lease liability of $0.7 million at the time of termination. Under the new NHC lease, the Company did not record a right-of-use asset and lease liability as the lease is a short-term lease.
In May 2025, the Company and two of our principal stockholders and members of our board of directors (the “Co-Defendants”) agreed to a Settlement Agreement in connection with a trial court judgment awarded to the Nangate Parties. The $32.5 million settlement (the “Settlement Payment”) consists of $16.0 million payable on June 18, 2025, $4.1 million payable on August 15, 2025, $4.1 million payable on November 14, 2025, and final payment of $8.3 million payable on February 13, 2026. Following the execution of the Settlement Agreement, the Co-Defendants, each a principal stockholder of the Company and a member of the Company’s board of directors, executed an apportionment agreement with the Company under which the Co-Defendants agreed to bear 25% of the Settlement Payment, with the Company bearing the remaining 75%. During the three months ended March 31, 2026, the Company made the final payment of $8.3 million and as of March 31, 2026, there is no remaining liability under the Settlement Agreement. Refer to Note 13, Commitments and Contingencies, for additional information.