Alex Mace
InvestorManaging Director at Thompson Street Capital Partners
St. Louis, Missouri
Writes $5M – $50M checks · typically $25M
About
Alex Mace is Managing Director and Head of the Portfolio Support Group at Thompson Street Capital Partners, a middle-market private equity firm in St. Louis. In this role, he works with portfolio company management teams and investment stakeholders on value creation activities spanning commercial strategy, organizational design, M&A integration, and operating performance across the investment lifecycle. Previously, he provided advisory services to asset and wealth management firms on growth strategy, competitive positioning, and M&A at Casey Quirk and Deloitte.
Experience
- Thompson Street Capital PartnersManaging Directorcurrent2026 — present
- Thompson Street Capital PartnersDirector2023 — 2026
- Thompson Street Capital PartnersVice President2020 — 2023
- Harvard Business School Angels & Entrepreneurship Council ChicagoMBA Associate2018 — 2019
- Thompson Coburn LLPSummer Associate2018
- Casey QuirkSenior Associate2015 — 2017
- Casey QuirkAssociate2013 — 2015
Skills & more
Spanish3Cross-functional Team Leadership2Financial Modeling11Research11Politics7Public Policy6Community Development5Business Strategy3Market Research4Data Analysis3Mergers & Acquisitions (M&A)Due Diligence
+12 more
Private EquityProject ManagementAnalyticsMarketingPricing StrategyStrategic PlanningMicrosoft OfficePowerPointMicrosoft ExcelPublic SpeakingMicrosoft ProjectLeadershipLanguages English · Spanish
- Member — The Missouri Bar
From Alex's professional profile.
Colleagues at Thompson Street Capital Partners
Aanika Patel
CXO at Thompson Street Capital Partners
Alec Guzov
Director at Thompson Street Capital Partners
Alex Stewart
Associate at Thompson Street Capital Partners
Alexis Vanstone
Director at Thompson Street Capital Partners
Alison Schulte
Vice President at Thompson Street Capital Partners
Allison Boyle
Vice President, Finance at Thompson Street Capital Partners
Andy Bauer
Vice President at Thompson Street Capital Partners
Bob Dunn
Managing Partner at Thompson Street Capital Partners
Network8
Alison Schulte
Vice President at Thompson Street Capital Partners
Bob Dunn
Managing Partner at Thompson Street Capital Partners
Bradley Strahorn
Investor at Thompson Street Capital Partners
Clayton Milburn
Investor at Thompson Street Capital Partners
Craig Albrecht
Managing Director at Thompson Street Capital Partners
Dan Cooper
Managing Director at Thompson Street Capital Partners
Fade Oluokun
Vice President at Thompson Street Capital Partners
Liz Borow
Investor at Thompson Street Capital Partners
Investors connected to Alex in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Alex Mace?
- Alex Mace is Managing Director and Head of the Portfolio Support Group at Thompson Street Capital Partners, a middle-market private equity firm in St. Louis. In this role, he works with portfolio company management teams and investment stakeholders on value creation activities spanning commercial strategy, organizational design, M&A integration, and operating performance across the investment lifecycle. Previously, he provided advisory services to asset and wealth management firms on growth strategy, competitive positioning, and M&A at Casey Quirk and Deloitte.
- Where does Alex Mace work?
- Alex Mace is Managing Director at Thompson Street Capital Partners.
- What check size does Alex Mace write?
- Alex Mace typically writes checks of $5M – $50M.
- Where did Alex Mace go to school?
- Alex Mace studied at Northwestern University - Kellogg School of Management (Master of Business Administration - MBA, Marketing and Finance); Northwestern University Pritzker School of Law (Doctor of Law - JD); Southern Methodist University (B.S.B.A., Economics).
Same school
Also attended Northwestern University - Kellogg School of Management726
Jenny LeeSenior Managing Partner at Granite AsiaKunal BahlCo-founder of Snapdeal; co-founder of Titan CapitalCristina JunqueiraCo-founder of NubankAndy FligelSenior Managing Director at Intel CapitalDavid Clark GuillermoInvestments at Impact America FundGiuseppe DonvitoPartner at P101 Ventures
+ 720 more
Also attended Northwestern University Pritzker School of Law56
Kyle PrifogleStaff AI Engineer at JMI EquityHelena HowardCompliance Associate at Deerfield Management CompanyMiles KilburnManaging Partner at Mosaik PartnersEyal KarshHead of American Family Ventures at American Family VenturesGabe GreenbaumGeneral Partner at B4 CapitalBala VaradhanPrincipal at F-Prime Capital Partners
+ 50 more
Also attended Southern Methodist University154
Minh DoAnalyst at Golden Gate VenturesJim DoehrmanAdvisor at Sierra VenturesTroy A. LeMaile-StovallCEO at Maryland TEDCOThomas MallakSenior Financial Analyst at AlleyCorpAlex GrasPrincipal at Mercury FundJovelyn CastellanosDirector of Strategic Initiaves and Public Affairs at Health Wildcatters
+ 148 more
Shared employers
Also worked at Thompson Street Capital Partners28
Nate VaselPartner at Las Olas Venture CapitalCraig AlbrechtManaging Director at Thompson Street Capital PartnersLiz BorowInvestor at Thompson Street Capital PartnersRick CliftonManaging Director at Thompson Street Capital PartnersDan CooperManaging Director at Thompson Street Capital PartnersBob DunnManaging Partner at Thompson Street Capital Partners
+ 22 more
