Registered entities
Mainspring Energy, Inc.
Reg. No. 20231478002United States
Etagen Inc
Reg. No. 272430529United States
Mainspring
Reg. No. 40103832196Latvia
Innovation
32 patent families (22 granted) — focus: Mechanical engineering, Electricity & electronics, Operations & transport; filing pace steady.
Social engagement
Social engagement: 77.9K social following, 10 posts in the last 12 months — below the industry typical range.
Hiring activity
Hires periodically
12 roles tracked across 3 of the last 12 months
3 Dec 2025 · Staff Mechanical Engineer - Structures Design · Menlo Park
19 Sep 2025 · Marketing Operations Specialist · Menlo Park
18 Sep 2025 · Market Strategy Manager · Menlo Park
18 Sep 2025 · Data Center Business Development Director · Menlo Park
17 Sep 2025 · Director, Marketing Communications · Menlo Park
Based on job postings tracked across public sources.
Recent activity
26 Jun 2026
Event
APPA National Conference 2026
10 Jun 2026
Leadership hire
CEO
2 Jun 2026
Event
Xendee University Week 2026 virtual event