Data / Foundation grants / Mark and Carolyn Guidry Foundation
Mark and Carolyn Guidry Foundation: 12 grants to organizations, $609,000 (tax year ended December 2025)
Mark and Carolyn Guidry Foundation, a private foundation in Los Altos, CA, paid 12 grants to organizations totaling $609,000 in its tax year ended December 2025, according to its Form 990-PF filed with the IRS on August 27, 2026. The largest was $400,000 to Sierra Nevada Children's Museum in Truckee, CA for charitable grant.
SpecStream is the live web data engine for teams and agents. It reads every private foundation's Form 990-PF as the IRS publishes it, and this page is that reading. Ask for the foundations that fund your cause in your state, with the amounts and purposes, and new grants arrive in your sheet, CRM, Slack or agent as the returns are filed.
- EIN
- 943185161
- Based in
- Los Altos, CA
- Assets
- $5,498,737
- Grants paid
- $609,000
- Tax year ended
- December 2025
Grants paid, tax year ended December 2025
From the Form 990-PF filed August 27, 2026, IRS object ID 202602399349100015. It reported $609,000 in grants paid; 12 grants to organizations are listed.
| Recipient | Location | Purpose | Cause | Amount | Source |
|---|---|---|---|---|---|
| Sierra Nevada Children's Museum | Truckee, CA | Charitable grant | $400,000 | apps.irs.gov | |
| San Jose State University | San Jose, CA | Charitbale grant | $75,000 | apps.irs.gov | |
| Chico State University | Chico, CA | Charitable grant | $40,000 | apps.irs.gov | |
| Raft | San Jose, CA | Charitable grant | $30,000 | apps.irs.gov | |
| Cal Poly San Luis Obispo | San Luis Obispo, CA | Charitable grant | $25,000 | apps.irs.gov | |
| Iowa State University | Ames, IA | Charitable grant | $10,000 | apps.irs.gov | |
| University of Washington | Seattle, WA | Charitable grant | Employment | $10,000 | apps.irs.gov |
| California State University Long Beach | Long Beach, CA | Charitable grant | $6,000 | apps.irs.gov | |
| Lafourche Parish Schools | Thibodaux, LA | Charitable grant | $5,000 | apps.irs.gov | |
| Bitterwater Tully School | King City, CA | Charitable grant | $3,000 | apps.irs.gov | |
| King City High School | King City, CA | Charitable grant | $3,000 | apps.irs.gov | |
| Children's Discovery Museum | San Jose, CA | Charitable grant | $2,000 | apps.irs.gov |
Grants paid, tax year ended December 2024
From the Form 990-PF filed October 1, 2025, IRS object ID 202512749349100906. It reported $538,000 in grants paid; 10 grants to organizations are listed.
| Recipient | Location | Purpose | Cause | Amount | Source |
|---|---|---|---|---|---|
| Sierra Nevada Children's Museum | Truckee, CA | Charitable grant | $400,000 | apps.irs.gov | |
| San Jose State University | San Jose, CA | Charitbale grant | $75,000 | apps.irs.gov | |
| Cal Poly San Luis Obispo | San Luis Obispo, CA | Charitable grant | $25,000 | apps.irs.gov | |
| Iowa State University | Ames, IA | Charitable grant | $10,000 | apps.irs.gov | |
| University of Washington | Seattle, WA | Charitable grant | Employment | $10,000 | apps.irs.gov |
| Lafourche Parish Schools | Thibodaux, LA | Charitable grant | $5,000 | apps.irs.gov | |
| Raft | San Jose, CA | Charitable grant | $5,000 | apps.irs.gov | |
| Bitterwater Tully School | King City, CA | Charitable grant | $3,000 | apps.irs.gov | |
| King City High School | King City, CA | Charitable grant | $3,000 | apps.irs.gov | |
| Children's Discovery Museum | San Jose, CA | Charitable grant | $2,000 | apps.irs.gov |
Causes funded
From grants whose recipient has a cause.
| Cause | Granted |
|---|---|
| Employment | $20,000 |
States funded
| Recipient state | Granted |
|---|---|
| California | $1,097,000 |
| Iowa | $20,000 |
| Washington | $20,000 |
| Louisiana | $10,000 |
Also on SpecStream
Updated August 27, 2026. Read from IRS Form 990-PF e-file data. Public domain (U.S. government work). Grants are as each foundation reported them to the IRS on its Form 990-PF. Grants to individuals are left out. A grant has a cause only where the recipient's name and city match one organization in the IRS Business Master File, and the cause is that organization's NTEE major group. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.