# William J. Sandbrook

> Alpha governed public record. Unknown, unavailable, and unpublished values are never inferred as zero.

## Record

| Field | Value |
| --- | --- |
| Representation | alpha-profile-markdown-v4 |
| Protocol | Alpha Governance Facts Protocol 0.1 |
| Schema | alpha.governance.entity.public.v1 |
| Record version | public-0:d751713988987e9331980363e24189ce |
| Governance record representation | alpha-governance-record-v2 |
| Canonical entity | alpha:person:william-j-sandbrook |
| Entity type | Person |
| Canonical URL | https://registry.alpha.ac/people/william-j-sandbrook |
| Publication | PUBLISHED |
| Verification | corroborated |
| Verification schema | alpha-verification-states-v1 |
| Ownership | unclaimed |
| Published claims | 15 |
| Claims under review | 0 |
| Evidence records | 6 |
| Conflicts | 0 |
| Conflicts in internal review | 0 |
| Observed | 2026-10-16T11:30:31.785656+00:00 |
| Last reviewed | 2026-05-16T10:36:17.558+00:00 |

## Identity

- Legal name: William J. Sandbrook
- Display name: William J. Sandbrook

## Alpha Governance Record

| Field | Value |
| --- | --- |
| Governance Record schema | alpha-governance-record-v2 |
| Ontology | alpha-governance-ontology-v1 |
| Record version | public-0:d751713988987e9331980363e24189ce |
| As of | 2026-10-16T11:30:32.347277+00:00 |
| Completeness | 1 |
| Record Quality | 0.943 |
| Directors | 0 |
| Committees | 0 |
| Governance events | 1 |
| Entity class | person |

## Section coverage

| Section | State |
| --- | --- |
| identity | PUBLISHED |
| corporate_structure | NOT_APPLICABLE |
| board | NOT_APPLICABLE |
| committees | NOT_APPLICABLE |
| leadership | NOT_APPLICABLE |
| ownership | NOT_APPLICABLE |
| financials | NOT_APPLICABLE |
| capital_structure | NOT_APPLICABLE |
| compensation | NOT_APPLICABLE |
| governance | NOT_APPLICABLE |
| shareholder_governance | NOT_APPLICABLE |
| audit | NOT_APPLICABLE |
| legal | NOT_APPLICABLE |
| risk | NOT_APPLICABLE |
| cyber | PUBLISHED |
| ai_governance | PUBLISHED |
| agent_governance | NOT_APPLICABLE |
| markets_external | NOT_APPLICABLE |
| events | PUBLISHED |
| relationships | PUBLISHED |
| assessments | PUBLISHED |
| evidence | PUBLISHED |

## Governance events

- DIRECTOR_APPOINTED: William J. Sandbrook seat on Comfort Systems USA, effective 2018-01-01. Effective: 2018-01-01. Detected: 2026-05-16T10:36:17.558+00:00. event_id=alpha:event:transition:1ymdwz1aqd5kd

## Scoped resources

- `alpha://person/william-j-sandbrook` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record
- `alpha://person/william-j-sandbrook/identity` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=identity
- `alpha://person/william-j-sandbrook/corporate-structure` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=corporate-structure
- `alpha://person/william-j-sandbrook/board` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=board
- `alpha://person/william-j-sandbrook/committees` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=committees
- `alpha://person/william-j-sandbrook/leadership` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=leadership
- `alpha://person/william-j-sandbrook/ownership` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=ownership
- `alpha://person/william-j-sandbrook/financials` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=financials
- `alpha://person/william-j-sandbrook/capital-structure` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=capital-structure
- `alpha://person/william-j-sandbrook/compensation` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=compensation
- `alpha://person/william-j-sandbrook/governance` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=governance
- `alpha://person/william-j-sandbrook/shareholder-governance` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=shareholder-governance
- `alpha://person/william-j-sandbrook/audit` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=audit
- `alpha://person/william-j-sandbrook/legal` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=legal
- `alpha://person/william-j-sandbrook/risk` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=risk
- `alpha://person/william-j-sandbrook/cyber` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=cyber
- `alpha://person/william-j-sandbrook/ai-governance` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=ai-governance
- `alpha://person/william-j-sandbrook/agents` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=agents
- `alpha://person/william-j-sandbrook/ecosystem` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=ecosystem
- `alpha://person/william-j-sandbrook/events` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=events
- `alpha://person/william-j-sandbrook/relationships` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=relationships
- `alpha://person/william-j-sandbrook/assessments` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=assessments
- `alpha://person/william-j-sandbrook/evidence` (contract): https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record&section=evidence

## Role modules

- Director

## Attention

- NO_RECORDS_FOUND

## Committee data

- NO_RECORDS_FOUND

## Leadership

- PUBLISHED

## Roles

- Director at Comfort Systems USA. Claim: alpha:claim:person:william-j-sandbrook:role:1. Valid from: 2018-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:dd83937fcd0d977f71c6c68be6fd4bfc28253bc6f33ed90bc782934e5a521f54.

## Governance

- PUBLISHED

## Board committees

- PUBLISHED

## AI and ML experience

- AI and ML experience: not identified in the cited filing. Claim: alpha:claim:person:william-j-sandbrook:ai_ml_experience:1. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3a38aa848abafffb55cabb0176c2eff2bce1c42ef48adbd8d92120089d18dad0, alpha:projection-evidence:document:95b3f77e2c580ced14036cce4f9214059bd974278692d99e23b30ea32e380868.

## Board independence

- Independent director. Claim: alpha:claim:person:william-j-sandbrook:board_independence:2. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:d09efb38719680b6efad0d12b1977fe8f08c523e59a0b96b597f5409f3572eb1.

## Board membership

- Serves on the board of Comfort Systems USA, Inc.. Claim: alpha:claim:person:william-j-sandbrook:board_membership:3. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:d09efb38719680b6efad0d12b1977fe8f08c523e59a0b96b597f5409f3572eb1, alpha:projection-evidence:f7a1739dd7e54c6e8cccff23e338929ac70b8c0038e81837ad657bb14fd62fe8.

## Board role

- Board role: Director. Claim: alpha:claim:person:william-j-sandbrook:board_role:4. Valid from: 2026-04-09. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3a38aa848abafffb55cabb0176c2eff2bce1c42ef48adbd8d92120089d18dad0.

## Committee assignments

- No committee assignment disclosed in the cited filing. Claim: alpha:claim:person:william-j-sandbrook:committee_assignments:5. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:d09efb38719680b6efad0d12b1977fe8f08c523e59a0b96b597f5409f3572eb1.
- Committee assignments: Compensation and Human Capital, Nominating, Governance, and Sustainability. Claim: alpha:claim:person:william-j-sandbrook:committee_assignments:6. Valid from: 2026-04-09. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3a38aa848abafffb55cabb0176c2eff2bce1c42ef48adbd8d92120089d18dad0.

## Cybersecurity experience

- Cybersecurity experience: not identified in the cited filing. Claim: alpha:claim:person:william-j-sandbrook:cybersecurity_experience:7. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:95b3f77e2c580ced14036cce4f9214059bd974278692d99e23b30ea32e380868, alpha:projection-evidence:document:3a38aa848abafffb55cabb0176c2eff2bce1c42ef48adbd8d92120089d18dad0.

## Executive company

- Executive at Andretti Acquisition Corp. II. Claim: alpha:claim:person:william-j-sandbrook:executive_company:8. Valid from: 2026-03-24. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3a38aa848abafffb55cabb0176c2eff2bce1c42ef48adbd8d92120089d18dad0, alpha:projection-evidence:document:9864ba2e508afdb4d3ef3cc83c605519af399f53dc18b5be007d727cec3eee51.
- Executive at Zapata Quantum, Inc.. Claim: alpha:claim:person:william-j-sandbrook:executive_company:9. Valid from: 2026-03-31. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:95b3f77e2c580ced14036cce4f9214059bd974278692d99e23b30ea32e380868.

## Executive title

- Executive title: Executive Chairman. Claim: alpha:claim:person:william-j-sandbrook:executive_title:10. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3a38aa848abafffb55cabb0176c2eff2bce1c42ef48adbd8d92120089d18dad0.
- Executive title: Executive Chairman and Chairman of the Board of Directors. Claim: alpha:claim:person:william-j-sandbrook:executive_title:11. Valid from: 2026-03-24. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:9864ba2e508afdb4d3ef3cc83c605519af399f53dc18b5be007d727cec3eee51.
- Executive title: Former Co-Chief Executive Officer and Chairman. Claim: alpha:claim:person:william-j-sandbrook:executive_title:12. Valid from: 2026-03-31. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:95b3f77e2c580ced14036cce4f9214059bd974278692d99e23b30ea32e380868.

## Other Company Role

- William J. Sandbrook is also linked to Knife River Corporation as Chairman of the Nominating and Governance Committee; Member of the Audit Committee.. Claim: alpha:claim:person:william-j-sandbrook:other_company_role:13. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:9864ba2e508afdb4d3ef3cc83c605519af399f53dc18b5be007d727cec3eee51.

## Technology background

- Technology background: not identified in the cited filing. Claim: alpha:claim:person:william-j-sandbrook:technology_background:14. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3a38aa848abafffb55cabb0176c2eff2bce1c42ef48adbd8d92120089d18dad0, alpha:projection-evidence:document:95b3f77e2c580ced14036cce4f9214059bd974278692d99e23b30ea32e380868.

## Coverage states

| Field | Value |
| --- | --- |
| Identity | PUBLISHED |
| Business | NOT_APPLICABLE |
| Leadership | PUBLISHED |
| Board and committees | PUBLISHED |
| Governance | PUBLISHED |
| Financials | NOT_APPLICABLE |
| Workforce | NOT_APPLICABLE |
| Ownership | NOT_APPLICABLE |
| Ratings | NOT_PUBLISHED |
| Market and index context | NOT_APPLICABLE |

## Public sources

- alpha:projection-evidence:document:3a38aa848abafffb55cabb0176c2eff2bce1c42ef48adbd8d92120089d18dad0: [FIX DEF 14A director slate](https://www.sec.gov/Archives/edgar/data/1035983/000130817926000245/fix014562-def14a.htm).
- alpha:projection-evidence:document:dd83937fcd0d977f71c6c68be6fd4bfc28253bc6f33ed90bc782934e5a521f54: [sec_proxy](https://www.sec.gov/Archives/edgar/data/1035983/000130817926000245/fix014562-def14a.htm).
- alpha:projection-evidence:document:95b3f77e2c580ced14036cce4f9214059bd974278692d99e23b30ea32e380868: [ZPTA 10-K executive officers](https://www.sec.gov/Archives/edgar/data/1843714/000107997326000401/zpat_10k-123125.htm).
- alpha:projection-evidence:document:9864ba2e508afdb4d3ef3cc83c605519af399f53dc18b5be007d727cec3eee51: [POLE 10-K executive officers](https://www.sec.gov/Archives/edgar/data/2025341/000121390026033562/ea0279112-10k_andretti2.htm).
- alpha:projection-evidence:document:d09efb38719680b6efad0d12b1977fe8f08c523e59a0b96b597f5409f3572eb1: [Comfort Systems USA, Inc. director board source](https://www.sec.gov/Archives/edgar/data/0001035983/000130817925000407/fix435973-def14a.htm).
- alpha:projection-evidence:f7a1739dd7e54c6e8cccff23e338929ac70b8c0038e81837ad657bb14fd62fe8: [public_source](https://www.sec.gov/Archives/edgar/data/1035983/000130817926000245/fix014562-def14a.htm).

## Rights

| Field | Value |
| --- | --- |
| public_retrieval | allowed |
| agent_retrieval | allowed |
| redistribution | not_granted |
| model_training | not_granted |
| commercial_use | not_specified |
| relationship_pathfinding | not_granted |
| direct_contact | not_granted |

## Limitations

- Only permissioned public claims and evidence are included.
- Absence of a claim is not evidence that the underlying fact is false.
- Public retrieval does not grant model-training or redistribution rights.
- Private relationships and Council activity are excluded.

## Alternate representations

- [Canonical profile](https://registry.alpha.ac/people/william-j-sandbrook)
- [Public Markdown](https://registry.alpha.ac/people/william-j-sandbrook.md)
- [Public JSON](https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=record)
- [JSON-LD](https://registry.alpha.ac/api/public/profiles/william-j-sandbrook?format=jsonld)
- MCP resource: `alpha://people/william-j-sandbrook` at https://mcp.alpha.ac/mcp


## Connected governance records

Only explicitly published, rights-cleared records. Missing records do not establish absence, safety, or complete coverage.