Grace D. Lieblein
About Grace D. Lieblein
Independent director since June 2017; age 64. Former Vice President, Global Quality at General Motors; earlier senior roles spanning purchasing/supply chain and GM country leadership. Currently chairs AMT’s Compensation Committee (since May 2024) and previously served on the Audit Committee (June 2017–May 2021) . Current outside public company board: Honeywell International, Inc. .
Past Roles
| Organization | Role | Tenure | Committees/Impact |
|---|---|---|---|
| General Motors Company | Vice President, Global Quality | Nov 2014–Dec 2015 | Senior operational oversight; global quality leadership |
| General Motors Company | Vice President, Global Purchasing & Supply Chain | 2012–2014 | Global sourcing and supply chain strategy |
| General Motors Company | President, GM Brazil | 2011–2012 | Country P&L leadership; Latin America exposure |
| General Motors Company | President, GM Mexico | 2008–2011 | Country leadership; operations and market execution |
| General Motors Company | Vehicle Chief Engineer | 2004–2008 | Engineering leadership; product development |
External Roles
| Organization | Role | Tenure | Committees/Impact |
|---|---|---|---|
| Honeywell International, Inc. | Director | 2012–present | Public company board experience; finance/operations exposure |
| Southwest Airlines Co. | Director (past) | 2016–2022 | Airline industry oversight; governance experience |
| Cox Enterprises, Inc. | Director | Not disclosed | Private company board; recusal at AMT when relevant |
Board Governance
- Committees and chair roles: Compensation Committee Chair (May 2024–present); Compensation Committee met 5 times in 2024; members: Lieblein (Chair), Chambliss, Macnab, Ray . Previously Audit Committee member (June 2017–May 2021) .
- Independence: Board determined she has no material relationship with AMT and is independent under NYSE Section 303A.02; recuses from deliberations involving companies where she serves (Cox Enterprises); payments to/from such companies below the greater of $1 million or 2% of revenues in 2024/2023, satisfying AMT’s guidelines .
- Attendance: In 2024 the Board held 4 regular and 6 special meetings; each director (except Mr. Ray, newly elected) attended at least 75% of Board and committee meetings; director nominees (except Mr. Ray) attended the 2024 annual meeting .
- Executive sessions: Independent directors hold executive sessions typically before/after each regular Board or committee meeting; the Chairperson presides, with flexibility for committee chairs to lead sessions as needed .
- Board leadership: Independent Chairperson (Pamela D. A. Reeve; Chair since May 2020); only independent directors serve on standing committees .
Fixed Compensation
| Component | Amount/Detail | 2023 | 2024 |
|---|---|---|---|
| Annual cash retainer (standard) | $100,000 for non-management directors | $100,000 | $100,000 |
| Committee fees (standard) | Audit: Chair $25,000; Member $15,000. Compensation: Chair $15,000; Member $15,000. Nominating: Chair $10,000; Member $10,000 | As applicable | As applicable |
| Additional annual payment to Chairperson of the Board (standard) | $125,000 (independent Chair; not applicable to Lieblein) | $125,000 | $125,000 |
| Lieblein—Fees earned (actual) | Total cash fees earned | $115,000 | $122,500 |
Notes: AMT’s standard director cash compensation structure disclosed above; Lieblein’s 2024 cash fees reflect retainer plus committee service consistent with her Compensation Committee chair role .
Performance Compensation
| Award Type | Grant Date | Shares/Units | Grant-Date Fair Value Per Share | Aggregate Grant-Date Fair Value | Vesting/Conditions |
|---|---|---|---|---|---|
| RSUs (annual) | Mar 11, 2024 | 1,089 | $206.75 | $225,151 | Fully vest/settle on one-year anniversary; time-based, no performance metric |
| RSUs (annual) | Mar 10, 2023 | 1,072 | $191.27 | $205,041 | Time-based vesting; no performance metric |
Performance metrics table (directors): No performance metrics apply to director equity; annual grants are time-based RSUs; no stock options granted in 2024/2023 .
Other Directorships & Interlocks
| Company | Relationship to AMT | Independence Handling |
|---|---|---|
| Cox Enterprises, Inc. (private) | Conducts business with AMT | Payments to/from Cox and AMT below greater of $1M or 2% of each company’s revenue; Lieblein recuses; board determined independence under NYSE standards |
| Honeywell International, Inc. | Not identified as material counterparty | Board affirmed independence; no 5% ownership; recusal protocol applies when relevant |
| Southwest Airlines Co. (past) | Past director role (ended 2022) | Board considered past service; independence maintained; thresholds satisfied |
Expertise & Qualifications
- Executive leadership; strategy; operational and management; finance/accounting; international/global operations; public company board; risk management .
- Deep large-cap operating experience in Latin America; financial expertise; strong board experience .
Equity Ownership
| Item | Detail |
|---|---|
| Shares beneficially owned (as of Mar 17, 2025) | 6,876; percent of common stock: “*” (less than 1%) |
| Presently vested equity inclusion | Table includes equity expected to vest by May 16, 2025 |
| Director stock ownership guidelines | 5x annual cash retainer for directors |
| Hedging/pledging | Prohibited by AMT policy for employees and directors |
Compliance status with individual ownership guidelines is not specifically disclosed; AMT maintains aggressive guidelines and prohibits hedging/pledging to reinforce alignment with stockholders .
Governance Assessment
- Strengths: Independent director with extensive operating and international experience; chairs a key committee (Compensation), overseeing clawback policy, stock ownership guidelines, and say-on-pay content; only independent directors on standing committees; independent board leadership with an experienced Chair .
- Engagement: Board/committee attendance met ≥75% threshold in 2024; compensation committee met 5 times; executive sessions are routine, enhancing independent oversight .
- Pay alignment: Director pay mix emphasizes equity via annual RSUs with one-year vesting; no options; robust stock ownership guidelines and anti-hedging/pledging policy support alignment with investors .
- Conflicts and related-party exposure: Service at Cox Enterprises noted; payments between AMT and Cox below materiality thresholds; recusal protocols followed; independence affirmed under NYSE standards—mitigating conflict risk (no tax gross-ups; double-trigger change-in-control noted in governance best practices at AMT, further supporting shareholder-friendly posture) .
- RED FLAGS: None material disclosed specific to Lieblein; independence maintained with formal recusal where applicable; no director options or repricing; no hedging/pledging permitted by policy .