MA
Corporate Ownership
Who owns Mattermost?
Based on market records documented in Polaris7 for 2026, no controlling parent organization is recorded for Mattermost. Documented institutional investors and major shareholders include S28 Capital, Battery Ventures.
Institutional Investors & Major Shareholders
Significant asset management firms, investment funds, and equity stakeholders tracked via regulatory filings.
S2
S28 Capital
Major Shareholder
Early-stage venture capital firm focused on B2B software.
BA
Battery Ventures
Major Shareholder
Technology-focused venture and software investment firm.
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