Founders Backed by Marek Olszewski (2026)

Marek Olszewski founders (1)

Marek Olszewski founders covers 1 founder on XL Batteries. The most common sector is Climate (1). Every founder below links to a profile with their company, backers, and the filings behind each round.

• Founders listed: 1
• Companies represented: 1
• Top sector: Climate (1 founders)
• Top location: Marlborough, MA (1 founders)

• Jeffrey Smith — XL Batteries

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