William A. Siffermann

About William A. Siffermann

William A. Siffermann is Vice President of Nuveen S&P 500 Dynamic Overwrite Fund (SPXX), with a principal business address at 333 West Wacker Drive, Chicago, IL 60606; he was born in 1975 and has served as an officer in the Nuveen fund complex since 2017 . He currently serves as Senior Managing Director of Nuveen (Managing Director in prior years), indicating senior leadership responsibilities across Nuveen’s funds platform . Officers of SPXX receive no compensation from the Fund, and the proxy does not disclose individual officer performance metrics (TSR, revenue or EBITDA growth) attributed to officers; compensation for the Chief Compliance Officer is paid by the Adviser with partial reimbursement by the Funds for incentive compensation, but this does not extend to other officers . Siffermann also functions as Manager of Fund Board Relations at Nuveen—the designated contact for shareholder communications to the Board—underscoring his role in board governance processes .

Past Roles

Fixed Compensation

• Officers of SPXX serve without any compensation from the Fund; the Funds have no employees and officer compensation is not paid by the Funds .
• The proxy details that the Chief Compliance Officer’s compensation (base salary + incentive) is paid by the Adviser, with the Funds reimbursing an allocable portion of incentive compensation; no equivalent disclosure exists for Vice Presidents like Siffermann .

Equity Ownership & Alignment

• Beneficial ownership tables in the proxy cover Board Members/nominees only and do not list officers; there is no officer-level disclosure of SPXX holdings for Siffermann (no pledged shares or hedging disclosures identified) .

Employment Terms

Performance & Track Record

• Scope of responsibility indicated by prior fund complex disclosure: Siffermann oversaw 175 portfolios in the Nuveen fund complex in 2017 (illustrating broad operational coverage rather than security selection/accountability) .
• Filings do not attribute fund TSR, revenue growth, or EBITDA growth to individual officers; SPXX’s governance emphasizes unitary board oversight and adviser-led management functions, with officers serving the Funds without Fund-paid compensation .

Board Governance Linkages

• Siffermann is the designated Board communications contact (Manager of Fund Board Relations), a role referenced repeatedly in shareholder communication procedures and Nominating & Governance Committee processes, evidencing his operational linkage to board governance and shareholder engagement .

Investment Implications

• Pay-for-performance alignment at the fund officer level is limited: SPXX officers (including Siffermann) are not compensated by the Fund, and no officer-specific pay metrics (bonus/PSU/option awards) or vesting schedules are disclosed; compensation sits at the Adviser level and is not detailed in Fund proxies—reducing direct alignment signals for SPXX shareholders .
• Ownership alignment is unclear: beneficial ownership disclosure targets Board Members and omits officers; absence of officer holdings, pledging, or hedging disclosures limits insight into “skin-in-the-game” for Siffermann .
• Retention risk appears low-to-moderate based on tenure and progressive seniority (VP → SVP → MD → Senior MD) within Nuveen since 2011–2025, but no employment contract, severance, or non-compete terms are disclosed for Siffermann—thus formal retention economics cannot be assessed from Fund filings .
• Trading signals tied to insider activity are constrained: officers are not listed in fund-level beneficial ownership tables and there is no disclosed Form 4 activity in the proxy materials; governance references position Siffermann as a process conduit rather than a capital-allocating officer for SPXX .