Workiva Inc (WK) insider trading
Every open-market stock purchase and sale by Workiva Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Brandon Ziegler (C-suite exec) sold $499K in the last 90 days.
- Last insider buy: Martin J. Vanderploeg (Director), $218K, 2 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $944K (6 sales). Last close $73.18 on Sep 18, 2026.
Recent WK insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 15, 2026 | Martin J. Vanderploeg (Director) | Bought (not open market) | — |
| Sep 1, 2026 | Junko Swain (C-suite exec) | Sold (not open market) | $165K |
| Aug 20, 2026 | Brandon Ziegler (C-suite exec) | Sold | $499K |
| Aug 18, 2026 | Martin J. Vanderploeg (Director) | Sold (not open market) | — |
| Jun 4, 2026 | Robert H Herz (Director) | Sold | $76.8K |
| Jun 1, 2026 | Martin J. Vanderploeg (Director) | Sold (not open market) | $1.5M |
| Jun 1, 2026 | Mark S Peek (Director) | Bought (not open market) | — |
| Jun 1, 2026 | Robert H Herz (Director) | Bought (not open market) | — |
| Jun 1, 2026 | Michael M Crow (Director) | Bought (not open market) | — |
| Jun 1, 2026 | Suku V. Radia (Director) | Bought (not open market) | — |
| Jun 1, 2026 | Richard Scott Herren (Director) | Bought (not open market) | — |
| Jun 1, 2026 | Martin J. Vanderploeg (Director) | Bought (not open market) | — |
| Jun 1, 2026 | Astha Malik (Director) | Bought (not open market) | — |
| May 29, 2026 | Robert H Herz (Director) | Sold | $49.7K |
| Apr 3, 2026 | Julie Iskow (CEO) | Sold (not open market) | $455K |
| Mar 2, 2026 | Richard Scott Herren (Director) | Bought (not open market) | — |
| Mar 1, 2026 | Julie Iskow (CEO) | Sold (not open market) | $159K |
| Mar 1, 2026 | Julie Iskow (CEO) | Sold (not open market) | $136K |
| Mar 1, 2026 | Julie Iskow (CEO) | Bought (not open market) | — |
| Feb 11, 2026 | Julie Iskow (CEO) | Sold (not open market) | $1.7M |
| Feb 11, 2026 | Brandon Ziegler (C-suite exec) | Sold (not open market) | $567K |
| Feb 11, 2026 | Junko Swain (C-suite exec) | Sold (not open market) | $24.3K |
| Feb 11, 2026 | Brandon Ziegler (C-suite exec) | Bought (not open market) | — |
| Feb 11, 2026 | Brandon Ziegler (C-suite exec) | Bought (not open market) | — |
| Feb 11, 2026 | Junko Swain (C-suite exec) | Bought (not open market) | — |
Who's trading WK
- Martin J. Vanderploeg, Director: other filings, last Sep 15, 2026
- Junko Swain, C-suite exec: other filings, last Sep 1, 2026
- Brandon Ziegler, C-suite exec: sold $499K (1 sale), last Aug 20, 2026
- Robert H Herz, Director: sold $264K (3 sales), last Jun 4, 2026
- Mark S Peek, Director: other filings, last Jun 1, 2026
- Michael M Crow, Director: other filings, last Jun 1, 2026
- Richard Scott Herren, Director: other filings, last Jun 1, 2026
- Astha Malik, Director: other filings, last Jun 1, 2026
- Suku V. Radia, Director: other filings, last Jun 1, 2026
- Julie Iskow, CEO: other filings, last Apr 3, 2026
- Barbara A Larson, CFO: other filings, last Feb 2, 2026
- David S. Mulcahy, Director: sold $181K (2 sales), last Dec 10, 2025
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