Investor · Educator · Founder

Mason Smith

Six years deploying capital into the technologies shaping the next decade — biotech, AI, defense, energy. Now building Rivendell, a venture helping ambitious people forge careers built for the AI age.

📍 Dallas, TX 🎓 Stanford ’19 🏔 Sub-3 Marathon · 3× IM 70.3

The Short Version

Investor by training. Educator by instinct. Building Rivendell because someone has to teach the next generation how to actually navigate this.

I’ve spent the last six years at Actium Group leading hard-tech investments across biotech, semiconductors, defense, and energy — deploying 8-figure checks and building a commercialization partnership with UT Southwestern, the #2 academic medical center in Texas.

Before that, I designed the Character & Leadership Program at St. Mark’s School of Texas, where I learned how to build frameworks that actually help ambitious people grow. I studied Management Science & Engineering at Stanford, ran a sub-3-hour marathon in New York, finished three Ironman 70.3s, and host the Learning from Leaders podcast for the Southwestern Medical Foundation.

Rivendell is what happens when those three threads — a capital allocator’s eye, an educator’s instinct, and working knowledge of where the world is actually going — get pointed at helping ambitious people build the careers they actually want in the AI age.

Currently Building

Rivendell

A Career Strategy venture for the AI age. We help ambitious people build the skill stacks, strategic plans, and proof-of-work portfolios that earn them a seat at the frontier — instead of being commoditized by it.

Quest

Explore with purpose.

Skills

Grow with intention.

Network

Connect with trust.

Energy

Lead with vitality.

Six Years at the Frontier

Investing in Hard Tech

As Vice President at Actium Group — a Dallas-based VC/PE firm focused on biotech and frontier technology — I led the full investment lifecycle from sourcing to active portfolio support across the sectors actually shaping the next decade.

Biotech · Genomics

Oxford Nanopore

Next-generation sequencing & multi-omics platform. Pre-IPO lead across multiple rounds.

RNA Therapeutics

Signify Bio

RNA therapeutics & drug delivery platform. Series A lead.

Neuro · Monoclonal Antibodies

GenrAb

Neuro monoclonal antibody development platform for MS & ALS indications. Seed lead.

$30M+ Investment Partnership Managed
6 yrs Full Lifecycle: Source → Diligence → Operate
UTSW Landmark Commercialization Partnership

Also active in the Texoma Semiconductor Tech Hub and built sourcing relationships across SMU, UT Dallas, UT Austin, Texas A&M, and Rice. Continuing-education work at Harvard Medical School (Cancer Genomics & Precision Oncology), Harvard Business School (Disruptive Strategy), and MIT (AI: Business Strategy).

Domains

Where I’ve Done The Work

Years of investment due diligence and partnership work have built a substantive, hands-on understanding of the sectors reshaping the global economy.

Biotechnology

Drug development pipelines, genomics, clinical-stage companies, and the regulatory landscape of modern medicine.

AI & Computing

Foundation models, semiconductor infrastructure, and the enterprise software layer driving the AI build-out.

Defense Tech

Dual-use technologies, national security applications, and the growing commercial–defense intersection.

Energy Tech

Clean energy infrastructure, grid modernization, and next-generation power solutions for a decarbonizing economy.

Teaching

St. Mark’s School of Texas

Building character in the classroom — and the pool.

Designed a school-wide Character & Leadership Program.

As a Teaching Fellow at St. Mark’s — consistently ranked among the top all-boys private schools in the U.S. — I helped to design and to build the school’s signature Character & Leadership Program: curriculum, digital platform, and the cross-faculty buy-in to deploy it across Lower, Middle, and High schools. I also coached the swimming and water polo teams (and an affiliated club team outside school), and TA’d across English, History, and Computer Science.

Curriculum Design

Built the C&L Program from the ground up — frameworks for values, integrity, and leadership habits.

Product Build

Shipped a digital platform to support student use across grade levels.

Stakeholder Buy-in

Drove adoption across teachers, administrators, and students. Still engaged today as a volunteer Class Agent.

Conversations

Learning from Leaders

A podcast for the Southwestern Medical Foundation.

Long conversations with world-class researchers, founders, and leaders.

I sit down with scientists pushing the frontier, biotech founders building companies that turn research into therapies, and veteran leaders whose stories are worth preserving. The format is unhurried; the goal is the stuff behind the polished bio.

Scientific Researchers

Frontier-level conversations with leading scientists pushing the limits of human knowledge.

Biotech Founders

Candid talks on company building, fundraising, and the grit required to bring therapies to market.

Veterans & Leaders

Service, sacrifice, and the timeless principles that define leadership under pressure.

Creative Pursuits

Writing & Photography

The camera and the keyboard are how I think out loud. Two blogs, long-form essays on X, and an adventure-photography practice that started as a way to make sense of mountains and ended up paying for itself.

Writing

Two blogs — 8th Summit and Dear Everybody — plus long-form essays on X. Topics: business, leadership, health and wellness, adventure, and personal growth.

Photography

Worked professionally as an event photographer and still shoot adventure photography in the mountains. Another lens for making sense of the world.

Wired for Endurance

The Athlete

The discipline required to finish a race translates directly to how I approach everything else. Below: the receipts.

Sub-3

NYC Marathon

Top 5% of marathon finishers worldwide.

Ironman 70.3 Finisher

Twice under 5 hours. USA Triathlon Nationals Qualifier.

10+

Endurance Races

Consistent competitor across a variety of disciplines.

When the Work is Done

Beyond the CV

A life worth living shows up in the texture, not the title line. A few of the things I make space for.

Annual Ski Trips for 20+

Every year I organize and host a 20+ person ski trip — every logistical detail handled so friends just show up and experience the trip. The best memories are still made in the mountains.

Grand Group Cooking

When the slopes close, I run the kitchen. Multi-course meals for large groups, with the same focus and attention I bring to the day job.

Community

The Cary Council · UT Southwestern

I serve on the Steering Committee of The Cary Council, a UT Southwestern initiative that brings together Dallas leaders to fund early-career scientists — the next generation of medical breakthroughs.

Community Engagement

Bringing together Dallas leaders and philanthropists around a shared mission of scientific advancement.

Fundraising

Generating critical resources that give early-career scientists runway to pursue bold, high-impact research.

Steering Committee

Serving in a leadership capacity to shape the direction, strategy, and growth of the Council’s programming.

Let’s Talk

Begin Your Quest

Whether you’re a founder building something ambitious, an investor exploring the frontier of biotech and technology, or someone who wants to sharpen the next decade of their career — I’m always open to a great conversation.