Pennylane

Pennylane SAS is a Paris-headquartered cloud accounting and financial-management platform serving accountants and the SMEs they advise. Founded 2020 by Arthur Waller, Edouard Mascre, Felix Blossier, and Quentin de Metz; Waller is CEO. SIREN 852 287 583. The product combines accounts-receivable, accounts-payable, expense, and reporting flows with a portal accountants can collaborate on.

The company closed a €175M Series E led by TCV with Blackstone Growth in January 2026 at a $4.25B valuation; existing backers Sequoia, DST Global, Meritech, and CapitalG followed. A 2026 governance charter explicitly preserves founder voting control through the round. Around 90,000 SMBs and 4,000 accounting firms use the platform across France, Germany, and Italy.