Are you Mark August Sieron? Claim this page now or Cliam yourself lawyer page
I began my career as a prosecutor in the Fourth Judicial Circuit where I worked for legendary State Attorney Ed Austin. While there, I prosecuted cases ranging from DUI to murder.
I left the State Attorney's Office to work as an associate for the firm of Kopelousos, Head, Smith, Townsend & Metcalf, a highly-respected AV- rated firm based in Clay County, Florida. After trying numerous criminal and complex civil cases, I became a shareholder in the firm which then became Head, Smith, Metcalf, Aguilar, Sieron & Moss, P.A. The current law firm is a successor to that firm.
Several years ago, I decided to concentrate primarily on criminal defense and associated administrative and civil cases. I've been honored to have earned the respect of my peers and the judiciary, having received an AV-Preeminent rating (highest possible for legal ability and ethics) by Martindale-Hubbell for over 20 years.
| Mark August Sieron: | Member at The Aguilar, Sieron & Yeomans, P.A |
 |
1045 North Orange Avenue Green Cove Springs, FL 32043-2529 |
| Website: | http://www.Sieronlaw.com |
| Phone: | 904-264-6000 |
| Fax: | 904-264-9223 |
| Offices: |
Aguilar, Sieron & Yeomans, P.A
|
A former state court prosecutor, Mark has been practicing criminal law for over 26 years in Florida. He is recognized by his peers, being assigned the highest possible rating by Martindale-Hubbel attroney rating servi9ce
After entering private practice, Mark was local contract counsel to the Department of Business and Professional Regulation. He now defends professionals whose licenses are in jeapardy.
| Association name | Position name | Duration |
|---|---|---|
| Jacksonville Bar Association | Member | N/A |
| Jacksonville Bar Association | Member | 1988 - 1900 |
| Jacksonville Bar Association | Member | N/A |
| Clay County Bar Association | Past President | 1990 - 1991 |
| Clay County Bar Association | Past President | 1993 - 1995 |
| Florida Association of Criminal Defense Lawyers | Member | N/A |
| National Association of Criminal Defense Lawyers | Member | N/A |
| Florida Association of Criminal Defense Lawyers | Member | 1996 - 1900 |
| National Association of Criminal Defense Lawyers | Member | 1996 - 1900 |
| Florida Association of Criminal Defense Lawyers | Member | N/A |
| National Association of Criminal Defense Lawyers | Member | N/A |
| Northeast Florida Association of Criminal Defense Lawyers | Member | N/A |
| Northeast Florida Association of Criminal Defense Lawyers | Member | N/A |
| Northeast Florida Association of Criminal Defense Lawyers | Member | 2005 - 1900 |
| Award name | Grantor | Date granted |
|---|---|---|
| AV Preeminent 5.0 out of 5 Peer Review Rated | Martindale-Hubbell | 2020 |
| Super Lawyer | SuperLawyers | 2020 |
| Super Lawyer | SuperLawyers | 2019 |
| Top 100 Florida Trial Lawyers | National Trial Lawyers Association | 2014 |
| Top Criminal Defense Lawyers | 904 Magazine | 2012 |
| AV Preeminent 5.0 out of 5 Peer Review Rated | Martindale-Hubbell | 1999 |
| School name | Degree | Graduated |
|---|---|---|
| University of Florida | BS - Bachelor of Science | 1981 |
| University of Florida | BS - Bachelor of Science | 1981 |
| University of Florida | JD - Juris Doctor | 1984 |
| University of Florida | JD - Juris Doctor | 1984 |
| State | Number | Status | Acquired | Updated |
|---|---|---|---|---|
| FL | 477370 | Member in Good Standing | 1985 | 04/25/2019 |
| Conference name | Title | Date |
|---|---|---|
| Florida Bar, Continuing Legal Education Committee | Third Party Liens | 1995 |
| Different Career Paths | Small Firms vs, Big Firms | 2025 |
| Different Career Paths | Small Firms vs, Big Firms | 2025 |
| Different Career Paths | Small Firms vs, Big Firms | 2025 |
| Different Career Paths | Small Firms vs, Big Firms | 2025 |
| Different Career Paths | Small Firms vs, Big Firms | 2025 |
| Title | Company name | Duration |
|---|---|---|
| Legal Intern | Law Offices of Ferrin Campbell, P.A. | 1983 - 1983 |
| Legal Intern | Law Offices of Ferrin Campbell, P.A. | 1983 - 1983 |
| Certified Intern | State Attorney's Office | 1984 - 1984 |
| Prosecutor | State Attorney's Office | 1984 - 1987 |
| Prosecutor | State Attorney's Office | 1984 - 1987 |
| Certified Intern | State Attorney's Office | 1984 - 1984 |
| Associate/Shareholder | Kopelousos, Head, Smith, Townsend & Metcalf, P.A. | 1993 - 2006 |
| Associate/Shareholder | Kopelousos, Head, Smith, Townsend & Metcalf, P.A. | 1993 - 2006 |
| Managing Partner | Aguilar & Sieron,, P.A. | 2006 - 1900 |
| Managing Partner | Aguilar & Sieron,, P.A. | N/A |
| Managing Partner | Aguilar & Sieron,, P.A. | N/A |
