YouTube Video: Sapians — Just Focus, Episode #21 · January 28, 2026 · Interview conducted by Aurore Perrin
On the Sapians channel, the investment platform, in its show *Just Focus*, Thibault Lamarque traces Castalie financing journey Castalie its investment philosophy. The interview breaks down the successive financing strategies used to fund growth—equity, then debt—and the asset allocation decisions that followed his cash-out. The underlying issue: demonstrating how a CEO can balance financing growth, a long-term vision, and impact-driven reinvestment.
Key takeaways
- Thibault Lamarque founded Castalie 2011—a pioneering company in the microfiltered water industry in France—after starting his career in finance, notably at Veolia.
- Castalie subscription model Castalie enabled the deployment of more than 7,500 water fountains.
- Thibault Lamarque structured Castalie growth Castalie a series of financing sources: equity, friends and family, equity funds, and then debt.
- Castalie out a loan from the Swiss private banking group Pictet—a wealth and asset management specialist founded in Geneva in 1805—to finance its growth and capital expenditures without diluting equity, and to refinance its existing infrastructure.
- Since his cash-out in 2020, Thibault Lamarque has shifted his investment strategy toward impact investing—which he often considers less risky than people think—and refuses to invest in “pure” tech.
- Thibault Lamarque advises startups such as FruityCorp, a French agri-food group specializing in cold-pressed fruit juices (brands include MyBrazil, Samba Bio, Juste Pressé, and La Jucerie), whose founder, Benjamin Dubois, speaks at the end of the episode about the timing of fundraising and financial structuring.
Source: Sapians , Just Focus episode #21, January 28, 2026 — interview conducted by Aurore Perrin. Watch the original video
