Mario K. Castillo
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Mario K. Castillo Email & Phone Number

Chancellor and Chief Executive Officer at Lone Star College
Location: Houston, Texas, United States 13 work roles 2 schools
2 work emails found @lonestar.edu LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

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Work email m****@lonestar.edu
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Current company
Role
Chancellor and Chief Executive Officer
Location
Houston, Texas, United States

Who is Mario K. Castillo? Overview

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Quick answer

Mario K. Castillo is listed as Chancellor and Chief Executive Officer at Lone Star College, based in Houston, Texas, United States. AeroLeads shows a work email signal at lonestar.edu and a matched LinkedIn profile for Mario K. Castillo.

Mario K. Castillo previously worked as Chancellor & Chief Executive Officer at Lone Star College and Chief Operating Officer & General Counsel at Lone Star College. Mario K. Castillo holds Doctor Of Law (J.D.), Law from Indiana University Bloomington.

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Email format at Lone Star College

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mcastillo@lonestar.edu
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AeroLeads found 2 current-domain work email signals for Mario K. Castillo. Compare company email patterns before reaching out.

Profile bio

About Mario K. Castillo

[Notice: this is a personal account not a company account. Nothing I say here are the opinions or statements of anyone else, my employer, or its Board of Trustees. No one writes or proofs copy for me. These posts, for better or for worse, are mine and mine alone.]Mario is a proven senior administrator with a demonstrated track record of helping lead a large, multi-college, higher education institution by providing day-to-day administrative and operational oversight of all operations--both at the system and local levels. Mario has a wide range of administrative experience that includes leading and coordinating c-suite executives through all routine instructional periods as a system officer and a college president, a once-in-a-lifetime hurricane, and a pandemic while mentoring, sponsoring, and helping students whenever he can.Mario has overseen, supervised, and coordinated the Offices of the Chief Operating Officer; General Counsel; Human Resources; Governance, Accountability, and Compliance; the Police Department; Public Records; Audit; Emergency Preparedness; Emergency Management; Environmental Health and Life Safety; Disability Services, External Employer Affairs, Health Occupations, Workforce Marketing, Workforce Development, Corporate Training, Veteran Affairs, and Continuing Technical and Community Education (~10,000 students). Mario has also been a college president overseeing all operations of a college with 12,000 students. Finally, Mario currently has oversight of all system-wide Academic Affairs, Student Success, Legal, Human Resources, Compliance, Law Enforcement, Governance, Safety and Security for a college system comprised of seven colleges, over 20 locations, covering 7.5M square feet of property, with over 7,000 employees, and about 80,000 to 100,000 students depending on the employed metric. On a personal level, as a first-generation American, Mario is the proud son of working-class, blue-collar Mexican immigrants who came to the United States to give Mario the gift of opportunities they did not have. Mario married his college sweetheart and they have a daughter and son. Mario enjoys running, cycling, (and to a much lesser extent--swimming). Mario just completed Ironman Texas in between involving himself in DIY home improvement projects well beyond his actual abilities.

Listed skills include Legal Writing, Litigation, Civil Litigation, Employment Law, and 16 others.

Current workplace

Mario K. Castillo's current company

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Lone Star College
Lone Star College
Chancellor and Chief Executive Officer
Houston, TX, US
AeroLeads page
13 roles

Mario K. Castillo work experience

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Chancellor & Chief Executive Officer

Current

The Woodlands, Tx, Us

Aug 2023 - Present

Chief Operating Officer & General Counsel

The Woodlands, Tx, Us

It is my experience that in many companies the General Counsel also has an operational title to help place that individual within the hierarchy of the institution (Vice President, Vice Chancellor, etc.). My situation is different because my second title has always carried with it operational responsibilities outside of the legal function. In other words, I have one set of divisions, an office, and staff that I oversee out of the Office of the Chief Operating Officer, and another set of divisions, an office, and staff that I simultaneously oversee out of the Office of the General Counsel. For ease (and because LinkedIn has "Description Limits"), I have organized my page here by functional area. I have been the General Counsel here since 2015. I have been the COO since 2017.I became COO in 2017 during -- literally -- Hurricane Harvey. As Vice Chancellor I had Legal, HR, and Compliance, but as COO, I've picked up the Police Department and serve as the civilian Police Commissioner, the Office of Emergency Management, the Department of Emergency Preparedness, the Office of Academic Success (the system's Chief Academic Officer reports to me); and the Office of Student Success (the system's Chief Student Services Officer reports to me). I have been the executive in charge of safety and security system wide since 2017. I have helped manage this institution's day-to-day responses to massive hurricanes, pandemics, floods, etc. I am also the executive in charge of overseeing all physical threats to the safety and security of our 7.6M square feet of property. During the height of the pandemic, I personally oversaw all of our reopenings, PPE acquisition, sorting, distributions, and deliveries. I personally drafted our COVID-19 protocols, procedures, manuals, and forms. I primarily see myself as a facilitator for my colleagues as COO, helping them navigate our diverse stakeholders, interests, and perspectives.

Jul 2017 - Aug 2023

General Counsel

The Woodlands, Tx, Us

In my advisory role, I personally keep and manage most labor & employment cases formerly outsourced. As General Counsel I have managed, implemented, and overseen every facet of labor and employment advice ranging from performance management, employee relations, human resources counseling, internal-hearing management, rewriting policies, procedures, business processes, forms, and other related documents, and ultimately litigation in various jurisdictions. I have also provided legal advice on constitutional law, real estate law, intellectual property, student services matters, Title IX, Cleary, academic issues (including academic freedom).In my governance role, I personally review board agendas, preparation of minutes, resolutions, and board agenda items, running public elections, scheduling, and attending general assemblies, executive meetings, and committee meetings; it also includes drafting, preparing for votes, editing, reviewing, and recommending revisions to the board’s governance handbook; and finally serving as parliamentarian regarding Robert’s Rules of Order Newly Revised, 12th edition.In my transactional role, I personally draft labor and employment contracts and some instructional, construction, goods-and-services, and facility-use contracts as well as most contracts that would come across the desk of a chief legal officer overseeing a one-billion-dollar business. I also developed and implemented in-house writing and drafting manuals largely influenced by Bryan Garner’s Modern American Usage and The Winning Brief on the persuasive side, and Kenneth A. Adams’s A Manual of Style for Contract Drafting on the transactional side.

Aug 2015 - Aug 2023

Chief Operating Officer, General Counsel, And Interim College President

The Woodlands, Tx, Us

I was simultaneously the system's Chief Operating Officer, its Chief Legal Officer, and the Interim President of Lone Star College - Kingwood. I chose not to be considered, and did not apply, to become the permanent president because my intent was always to return to my system-level post. I gave my word on the first day of my interim presidency, and I kept it. Lone Star College – Kingwood is one of seven colleges within the Lone Star College System District. LSC-Kingwood had nearly 12,000 students enrolled in Spring 2021, 795 employees, about 120 full-time faculty members, and 540,000 square feet of property at its main campus and two associated centers. It has an annual operating budget of about 32 million dollars.

Sep 2020 - Jun 2021

Vice Chancellor & General Counsel

The Woodlands, Tx, Us

In 2016, about a year after being hired to become the General Counsel, I received a promotion to Vice Chancellor and General Counsel. With the Vice Chancellorship came the additional responsibilities of overseeing a legacy HR division and creating a new compliance division that is now known as the Office of Governance, Accountability, and Compliance.In the Office of Human Resources, we completely redesigned, reorganized, and recreated the Office of Human Resources since 2016. A person that worked in OHR in 2015 would simply not recognize it in 2022. We completely redesigned the HR operational structure and functions. Part of that was a complete revamping of all of HR’s hiring processes—including a change in the ATS. The entire system moved from Oracle TAM 9.2 to TALEO to TAM again. We oversaw the digitization of all HR records and leave management processes (FMLA, ADA, etc.). We managed a compensation analysis, regrade of all bands, and compression analysis and correction for every single faculty and non-faculty employee. We developed, implemented, and amended equity and diversity scorecards for all hires leaning into DEI well before it became fashionable to do so.In the Office of Governance, Accountability, and Compliance we created, built, and hired the System’s first compliance division in its nearly 50-year history. It started out with about a handful of employees that became our Department of Incident Management (i.e., our internal investigators/ombudsmen). It has since grown to include Departments of Accessibility Services and Resources, Compliance Education and Training, Ethics and Compliance Services (including Title IX), Compliance Management (tracking hundreds of compliance items), and Environmental Health and Life Safety, Records Compliance and Management (public records). The team and I have worked together to develop business processes, policies, procedures, forms, reference manuals, for all these teams largely from scratch.

Aug 2016 - Jul 2017

Labor & Employment Litigation Partner

Houston, Texas, Us

On the litigation side, I primarily focus on federal court litigation defending management in labor and employment disputes. I have handled all matters between receiving a demand letter to the entry of judgment--including trial experience. I enjoy writing dispositive motions as much as the average romantic enjoys long walks on the beach.On the investigation side, I have conducted internal sexual harassment investigations, represented clients in wage and hour investigations by the Department of Labor, and represented clients in immigration compliance investigations by the Department of Homeland Security.On the consulting side, I primarily focus on advising employers how to navigate the Affordable Care Act's employer mandate (from whether the ACA applies to them to implementing it in the most adequate way on a company-by-company basis). I have also conducted extensive Form I-9 audits to ensure compliance with the nation's immigration laws.

Jul 2012 - Aug 2015

Briefing Attorney To The Hon. Felix Recio

United States District Court For The Southern District Of Texas

I was responsible for managing and briefing the judge on the civil docket, including researching complex motions in preparation for drafting all his civil orders and opinions. I briefed Judge Recio on over 300 civil actions while I was his briefing attorney ranging from complex immigration, habeas corpus, admiralty, breach of contract, tort, labor and employment, and product liability cases. If it typically can be found in a federal court, I saw it over the four years I served in Brownsville. I also assisted the Judge's Courtroom Deputy in managing the criminal docket, including drafting complex orders on a variety of motions and preparing bench briefs for lengthy hearings. The Brownsville Division of the Southern District of Texas is one of the busiest criminal courts in the United States. I was involved and helped prepare the Court for initial appearances, arraignments, preliminary examinations, detention hearings, motion hearings, rearraignments, and sentencing. I also worked on asset forfeiture and extradition cases while I served in Brownsville.

Aug 2008 - Jul 2012

Adjunct Instructor

Tx, Us

While I was serving as a briefing attorney / law clerk in the Brownsville Division of the Southern District of Texas, I took a second job as an adjunct instructor at UTB. I taught Fundamentals of Criminal Law to students in the Criminal Justice Department.

Aug 2010 - Jan 2011

Research Assistant

Bloomington, Indiana, Us

I was first a research assistant for Professor Hannah Buxbaum. Professor Buxbaum was writing an article on international securties transactions involving foreign investors, foreign issuers, and foreign exchanges. Professor Buxbaum's article surveyed many transactions and disputes that required extensive research on my part.I was then a research assistant to Professor Joshua Fairfield. Professor Fairfield is an ecommerce expert whose writings primarily arise from the injection of the internet and virtual worlds into traditional doctrines like contracts and torts. I helped him research several key virtual worlds for his research.I was finally a research assistant to Professors Sarah Hughes and David P. Fidler. Professors Hughes and Fidler were writing a book entitled "Responding to National Security Letters: A Practical Guide for Legal Counsel." I conducted extensive research, made editorial suggestions to several chapters, and was responsible for half the footnotes in the entire book.

Sep 2005 - Jun 2008

Legal Intern To The Hon. Kenneth M. Hoyt

United States District Court For The Southern District Of Texas

I drafted basic orders for the law clerks to review. I primarily spent my summer working on an electrical engineering patent case that was scheduled for a Markman hearing in mid-August 2007.

Jun 2007 - Aug 2007

Legal Intern To The Chief Counsel Of Appeals

Office Of The Indiana Attorney General

I was responsible for drafting over 40 briefs on the Government's behalf opposing inmate criminal appeals.

Jun 2006 - Apr 2007

Spanish & English Interpreter

Masterword Services

I was assigned to Masterword's Child Protective Services contract where I interpreted for CPS on family visits, during investigations, and in-office visits.

May 2004 - Jun 2005
2 education records

Mario K. Castillo education

Doctor Of Law (J.D.), Law

Indiana University Bloomington

Bachelor Of Arts (B.A.), Government

The University Of Texas At Austin
FAQ

Frequently asked questions about Mario K. Castillo

Quick answers generated from the profile data available on this page.

What company does Mario K. Castillo work for?

Mario K. Castillo works for Lone Star College.

What is Mario K. Castillo's role at Lone Star College?

Mario K. Castillo is listed as Chancellor and Chief Executive Officer at Lone Star College.

What is Mario K. Castillo's email address?

AeroLeads has found 2 work email signals at @lonestar.edu for Mario K. Castillo at Lone Star College.

Where is Mario K. Castillo based?

Mario K. Castillo is based in Houston, Texas, United States while working with Lone Star College.

What companies has Mario K. Castillo worked for?

Mario K. Castillo has worked for Lone Star College, Monty & Ramirez Llp, United States District Court For The Southern District Of Texas, University Of Texas At Brownsville, and Indiana University.

How can I contact Mario K. Castillo?

You can use AeroLeads to view verified contact signals for Mario K. Castillo at Lone Star College, including work email, phone, and LinkedIn data when available.

What schools did Mario K. Castillo attend?

Mario K. Castillo holds Doctor Of Law (J.D.), Law from Indiana University Bloomington.

What skills is Mario K. Castillo known for?

Mario K. Castillo is listed with skills including Legal Writing, Litigation, Civil Litigation, Employment Law, Courts, Legal Research, Hearings, and Research.

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