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Our Mission


At LCS, our mission is simple: treat clients the way we want to be treated and deliver exceptional work with efficiency and precision. We thrive under pressure and turn numbers into narrative.™ At LCS, we go beyond the numbers—we deliver insights, solutions, and unwavering support in every engagement.

Who We Are

Founded in 2012, LCS is a Certified Public Accounting firm specializing in buy-side and sell-side M&A financial and tax due diligence, accounting services, fractional CFO services, and forensic accounting and expert witness services.

Who We Serve


We are trusted advisors to business buyers, sellers, capital providers, intermediaries, and attorneys, providing expert guidance on complex accounting challenges for confident decision-making.

Meet Our Team

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Max Lummis
CPA, CVA, CFE

Founder & Managing Shareholder
 

Tel: 713-224-5914

Houston, TX Office

Email: mlummis@lcsfirm.com

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Olya Lumelleau
CPA

Principal & Shareholder

Tel: 713-224-5914

Houston, TX Office

Email: olumelleau@lcsfirm.com

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Brandy Lummis
CFE

CFO & Shareholder

Tel: 713-224-5914

Houston, TX Office

Email: blummis@lcsfirm.com

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Travis Sadler
CPA, CFE, MBA

Principal & Shareholder

Tel: 713-224-5914

Denver, CO Office

Email: tsadler@lcsfirm.com

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Todd Moser, 
CPA

Principal, Fractional CFO Services

Tel: 713-224-5914

Houston, TX Office

Email: tmoser@lcsfirm.com

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Timothy Zimet,
CPA

Manager 

Tel: 713-224-5914

Miami, FL Office

Email: tzimet@lcsfirm.com

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Rabiga Baimukhametova

Senior Associate

Tel: 713-224-5914

Houston, TX Office

Email: rabiga@lcsfirm.com

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Clark
Crookston

Associate

Tel: 713-224-5914

Houston, TX Office

Email: ccrookston@lcsfirm.com

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Dave
Bourgoin

Director of Business Development

Tel: 713-224-5914

Dallas, TX Office

Email: dbourgoin@lcsfirm.com

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LinkedIn

Dennis Irwin
CPA

Principal, Tax Advisory 

Tel: 713-224-5914

Houston, TX Office

Email: dirwin@lcsfirm.com

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Jonathan
Werst
CPA

Senior Associate

Tel: 713-224-5914

Dallas, TX Office

Email: jwerst@lcsfirm.com

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Amanda Szydlik

Manager, Accounting Services

Tel: 713-224-5914

Houston, TX Office

Email: aszydlik@lcsfirm.com

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