VANDERPLOEG MARTIN J. 4

What Happened
Martin J. Vanderploeg, a director of Workiva Inc. (WK), had 28,942 shares delivered to the company on June 1, 2026 to satisfy withholding taxes tied to vested restricted stock units — those shares were recorded at $52.83 each for a total value of about $1,529,006. On the same date he was also granted 4,070 restricted stock units (RSUs) under the company’s equity plan (no per-share price reported for the grant).

Key Details

• Transaction date: 2026-06-01; filing dated 2026-06-03 (appears timely for a Form 4).
• Disposition: 28,942 shares delivered at $52.83/share = $1,529,006 (code F — tax withholding).
• Acquisition: 4,070 RSUs granted (code A) under the Workiva Inc. 2014 Equity Incentive Plan; value per share not listed.
• Shares owned after the transactions: not specified in the provided filing.
• Relevant footnotes: F1 confirms shares were delivered to the issuer to pay withholding taxes on vested RSUs; F2 notes the RSU grant is pursuant to the 2014 Equity Incentive Plan. The filing also includes standard company notes about Class B→Class A conversion and general option/vesting provisions (see F3–F5).

Context

• The 28,942-share disposition was a withholding/cashless delivery to cover taxes upon vesting (routine administrative action), not an open-market sale that signals a directional trade.
• The 4,070 RSU entry is an equity award; such grants typically vest over time (the filing includes a note that some grants vest in three equal annual installments).
• This filing is informational and factual; it does not by itself indicate the director’s view on the company’s stock.