Principals
4
Principal Net Worth
$1.0B
Data Flags
None - Team data current from foundation website, Jim Simons death (May 2024) confirmed
Sea Change Foundation
UnknownHigh ConfidenceLast verified: Jan 17, 2026
Details
- Source File
- research/organizations/sea-change-foundation.md
- UID
- fo-sea-change-foundation
Also Known As
Sea ChangeNat Simons Foundation (informal)Simons Climate Foundation (not official, but sometimes confused with Sea Change)
Principals (4)
Known Associates (5)
Clean energy advocates
: Policy leaders and activists in climate space
Climate philanthropy community
: Leading figures in environmental grantmaking
Jim Simons (deceased)
: Father, Renaissance Technologies founder, legendary quant investor
Marilyn Simons
: Mother, Simons Foundation co-founder
Renaissance Technologies alumni
: Network through family connections
Relationship Strength
Loading relationships...
Sources (4)
Changelog
- 2025-12-29Added comprehensive Current Team section with 12 Tempest Advisors staff members and LinkedIn profiles. Added Prelude Ventures and Meritage Group LP to Entities. Added Climate Leadership Initiative and Breakthrough Energy Coalition connections. Noted Tom Steinbach (former Executive Director) moved to Rainier Climate in 2024. Updated sources with foundation website and team pages.
- 2025-12-11Initial file created with foundational information about Nat Simons, Laura Baxter-Simons, and Sea Change Foundation. Noted Jim Simons' death in May 2024. Additional research required to complete all sections.