People v. Seibert. 11PDJ024. September 27, 2011. Attorney Regulation. The Presiding Disciplinary Judge approved a Conditional Admission of Misconduct submitted by the parties and suspended John C. Seibert (Attorney Registration Number 21437) for thirty days, all stayed upon the successful completion of a two-year period of probation, with conditions, effective September 27, 2011. Seibert failed to prosecute his clients’ case, which resulted in dismissal, and did not notify his clients that their case had been dismissed. Seibert also failed to respond to a demand for information from disciplinary counsel. His misconduct constitutes grounds for the imposition of discipline pursuant to C.R.C.P. 251.5 and violated C.R.C.P. 251.5(d) and Colo. RPC 1.3, 1.4(a)(3) and (4), and 8.1(b).