SC
Sergio Alonso Castillo
Sergio Alonso Castillo is a lawyer in Houston, TX who works for Monty & Ramirez LLP. Practice areas include Business, Contracts, Labor-Employment. Licensed in Texas since 2021. Graduated from South Texas College of Law Houston in 2021.
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Law school
Bar admission
Office
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SC
Sergio Alonso Castillo
Monty & Ramirez LLPHouston, TX·4 years licensed
Claim profileContact attorney
Sergio Alonso Castillo is a lawyer in Houston, TX who works for Monty & Ramirez LLP. Practice areas include Business, Contracts, Labor-Employment. Licensed in Texas since 2021. Graduated from South Texas College of Law Houston in 2021.
Law school
South Texas College of Law Houston
Class of 2021
Bar admission
2021
State Bar of TX · No. 24126757
Office
150 W Parker Rd Ste 403
Houston, TX 77076
Disciplinary
None on record
Clean since admission
Career history
2 observed firms
Based on State Bar of Texas snapshots — each row is a firm the attorney was registered with at one of our quarterly pulls.
- Sergio a. Castillo, PLLCAS OF MAY 2023Private Law Practice · Houston, TX
- Monty & Ramirez LLPAPR 2026 — PRESENTPrivate Law Practice · Houston, TX
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Case data
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Practice & jurisdiction
Practice areas
- Business
- Contracts
- Labor-Employment
- Real Estate
- Wills-Trusts-Probate
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Last refreshed Jun 2026