Brian Iversen
Founder & Managing Partner at Cimbria Capital
Founder and managing partner of Cimbria Capital, the Houston water-economy private-equity firm built on his contrarian case that venture capital is the wrong tool for water.
Compiled by Antoine Walter - from insight gathered on and off his (don’t) Waste Water microphone!
Brian Iversen is the founder and managing partner of Cimbria Capital, a Houston private-equity firm investing in the water economy across North America and the Nordics. A former energy investor and Danish army officer, he argues that venture capital is the wrong tool for water, aiming instead for a disciplined 2 to 4 times return. As of 2026.
Brian Iversen did not start in water, and that is most of the point of him. He spent eight years as a vice president at Riverstone Holdings, one of the big private-equity names in energy, working on teams that put roughly two billion dollars of equity to work across the Americas and Europe in renewable energy and sustainable agriculture. Before any of that he was a First Lieutenant in the Royal Danish Army, which is where the accent comes from, and he only moved to the United States in 2000. So by the time he founded Cimbria Capital in 2015 to invest in the water economy, he was carrying a very specific toolkit: the patience of a private-equity investor, the discipline of a soldier, and a healthy suspicion of anyone promising a quick win.
Brian Iversen is best known on the show for an unpopular argument that he refuses to walk back: that venture capital is the wrong tool for water. He laid the case out in a 2019 piece, I called him out on LinkedIn for it, and when I asked whether he would double down, his answer was "almost entirely a yes." His reasoning is worth sitting with, because it is not anti-water, it is anti-the-math. Venture capital needs a handful of companies to return ten times the money to make the whole fund work, and Brian's point is that in water that ten times almost never shows up on a consistent basis. Water businesses tend not to fail fast the way the venture model assumes either, so instead of a clean win or a clean loss you get companies stuck in what he calls a gray zone, neither succeeding nor disappearing, hanging on for a decade or two while people quietly lose money along the way.
Brian Iversen built Cimbria Capital as the answer to his own complaint. Rather than chasing a 10x, Cimbria thinks like private equity: the first goal, in his words, is to never not get the money back, and only then to earn two, three, or on a very good day four times the money over a three-to-six-year hold. To get there he is deliberately not hunting for great companies, which sounds backwards until you hear him explain it, because if you pay the full price for an already-great company there is no room left to make the two or three times he has promised his investors. His goal is to buy a good company and make it great, or a mediocre one and make it good, and then make it sellable. The lever for that is what Cimbria calls its Acceleration Program, a hands-on operating team that sits on the board and helps with the day-to-day, which is the growth-equity habit he carried over from energy, where you could take a fifty-million-dollar business and grow it to two hundred and fifty. In water the bite sizes are smaller, but he argues that the same vacuum exists between early venture and the big buyers, and that vacuum is exactly where Cimbria parks itself.
Brian Iversen wears the discipline lightly but it runs deep. He played NCAA Division I soccer at the University of Central Florida and turned out 25 times for Denmark's youth national team, and the through-line from the pitch to the army to the cap table is the same: avoid the unforced error. The quote he keeps on the Cimbria website is Charlie Munger's, that everybody is trying to be brilliant while he is just trying to not be idiotic, which Brian admits is harder than it sounds. It is the cleanest summary of how he picks, and it is why the line that stuck with me from our conversation was not a boast about returns but a plain statement of his job:
“My goal is to invest in a good company and make it great, or a mediocre company and make it good. The key part is that we can help a company become more than they were, and we make it sellable.”
Brian Iversen is, in the end, the rare investor whose pitch is mostly about what he will not do, and in a water sector that he describes as a slow-moving tsunami that gets worse before it gets better, that restraint is the whole product.
On (don’t) Waste Water
The time Brian Iversen was a guest on the show:
The company
Frequently asked
- Who is Brian Iversen?
- Brian Iversen is the founder and managing partner of Cimbria Capital, a Houston private-equity firm investing in the water economy across North America and the Nordics. A former Riverstone Holdings energy investor and Danish army officer, he founded Cimbria in 2015 and is known for arguing venture capital is the wrong tool for water.
- What is Cimbria Capital, and what does it invest in?
- Cimbria Capital is a private-equity firm Brian Iversen founded in 2015, based in Houston and Denmark. It puts growth and expansion capital into commercial-stage water-economy and agribusiness companies across North America and the Nordics, backing them with a hands-on Acceleration Program rather than chasing early-stage venture bets.
- Why does Brian Iversen think venture capital is wrong for water?
- Brian Iversen argues venture capital needs a few 10x winners to work, and in water that almost never happens consistently. Water companies rarely fail fast either, so they linger in a gray zone for a decade or two while investors quietly lose money. He targets a disciplined 2 to 4 times return instead.
- What did Brian Iversen do before founding Cimbria Capital?
- Brian Iversen spent eight years as a vice president at Riverstone Holdings, a major energy private-equity firm, working on roughly two billion dollars of renewable-energy and agriculture investments across the Americas and Europe. He later ran AG Global as CEO, and earlier served as a First Lieutenant in the Royal Danish Army.
- Is Cimbria Capital the same as the Cimbria agricultural-machinery brand?
- No. Cimbria Capital is Brian Iversen's water-economy private-equity firm in Houston, unrelated to "Cimbria," the Danish grain and seed-processing equipment brand that shares the name. Cimbria Capital invests in water and infrastructure businesses; it does not make machinery. The shared word is coincidental.
- Where can I listen to Brian Iversen on the (don’t) Waste Water podcast?
- Brian Iversen appeared on (don’t) Waste Water in March 2024 for "An Unpopular & Challenging (yet True?) Take on Venture Capital in Water," where he made his full case against the venture model. The episode is linked above to read, listen, or watch on YouTube.
