WK · Insider Trading
Workiva Inc.
Every open-market purchase and sale reported by WK officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-16 | Martin J. Vanderploeg | Director | G | — | — |
| 2026-09-02 | Junko Swain | SVP, Chief Accounting Officer | F | −2,151 | −$164.98K |
| 2026-08-21 | Brandon Ziegler | EVP, CLO, CAO & Corp Secretary | Sell | −6,571 | −$499.20K |
| 2026-08-20 | Martin J. Vanderploeg | Director | G | −2,780 | — |
| 2026-06-08 | Robert H Herz | Director | Sell | −1,500 | −$76.84K |
| 2026-06-03 | Mark S Peek | Director | A | +4,070 | — |
| 2026-06-03 | Astha Malik | Director | A | +4,070 | — |
| 2026-06-03 | Richard Scott Herren | Director | A | +4,070 | — |
| 2026-06-03 | Michael M Crow | Director | A | +4,070 | — |
| 2026-06-03 | Suku V. Radia | Director | A | +4,070 | — |
| 2026-06-03 | Martin J. Vanderploeg | Director | MIXED | −24,872 | −$1.53M |
| 2026-06-03 | Robert H Herz | Director | A | +4,070 | — |
| 2026-06-02 | Robert H Herz | Director | Sell | −1,000 | −$49.69K |
| 2026-04-06 | Julie Iskow | President & CEO | F | −7,578 | −$454.68K |
| 2026-03-03 | Richard Scott Herren | Director | A | +877 | — |
| 2026-03-03 | Julie Iskow | President & CEO | MIXED | −693 | −$294.66K |
| 2026-02-13 | Junko Swain | SVP, Chief Accounting Officer | MIXED | +397 | −$24.29K |
| 2026-02-13 | Julie Iskow | President & CEO | MIXED | +22,331 | −$1.70M |
| 2026-02-13 | Brandon Ziegler | EVP, CLO, CAO & Corp Secretary | MIXED | +8,367 | −$567.01K |
| 2026-02-04 | Brandon Ziegler | EVP, CLO, CAO & Corp Secretary | F | −4,531 | −$326.23K |
| 2026-02-04 | Junko Swain | SVP, Chief Accounting Officer | F | −650 | −$46.80K |
| 2026-02-04 | Julie Iskow | President & CEO | F | −18,115 | −$1.30M |
| 2026-02-03 | Junko Swain | SVP, Chief Accounting Officer | MIXED | +6,241 | +$477.39K |
| 2026-02-03 | Barbara A Larson | EVP, CFO & Treasurer | A | +141,103 | +$10.80M |
| 2026-02-03 | Julie Iskow | President & CEO | MIXED | +104,578 | +$7.99M |
| 2026-02-03 | Martin J. Vanderploeg | Director | F | −560 | −$43.13K |
| 2026-02-03 | Brandon Ziegler | EVP, CLO, CAO & Corp Secretary | MIXED | +25,001 | +$1.91M |
| 2025-12-12 | David S. Mulcahy | Director | Sell | −1,162 | −$106.32K |
| 2025-12-12 | Robert H Herz | Director | Sell | −1,500 | −$137.16K |
| 2025-12-01 | David S. Mulcahy | Director | Sell | −808 | −$74.34K |
| 2025-09-03 | Junko Swain | SVP, Chief Accounting Officer | F | −2,093 | −$172.13K |
| 2025-06-02 | Astha Malik | Director | A | +3,218 | — |
| 2025-06-02 | David S. Mulcahy | Director | A | +3,218 | — |
| 2025-06-02 | Suku V. Radia | Director | A | +3,218 | — |
| 2025-06-02 | Robert H Herz | Director | A | +3,218 | — |
| 2025-06-02 | Michael M Crow | Director | A | +3,218 | — |
| 2025-06-02 | Martin J. Vanderploeg | Director | MIXED | +3,218 | — |
| 2025-05-27 | Jill Klindt | EVP, CFO & Treasurer | Sell | −7,773 | −$521.57K |
| 2025-05-13 | Jill Klindt | EVP, CFO & Treasurer | G | −3,700 | — |
| 2025-04-17 | Martin J. Vanderploeg | Director | M | +84,210 | +$1.24M |
| 2025-04-04 | Julie Iskow | President & CEO | F | −7,564 | −$523.81K |
| 2025-03-14 | Michael D. Hawkins | EVP, Sales | Sell | −8,992 | −$772.50K |
| 2025-03-14 | Robert H Herz | Director | Sell | −2,500 | −$221.69K |
| 2025-03-07 | Brandon Ziegler | EVP, CLO, CAO & Corp Secretary | Sell | −4,115 | −$352.74K |
| 2025-03-07 | Jill Klindt | EVP, CFO & Treasurer | Sell | −5,593 | −$475.63K |
| 2025-03-07 | Michael D. Hawkins | EVP, Sales | Sell | −10,421 | −$890.27K |
| 2025-03-04 | Brandon Ziegler | EVP, CLO, CAO & Corp Secretary | F | −786 | −$68.79K |
| 2025-03-04 | Julie Iskow | President & CEO | MIXED | −2,727 | −$572.29K |
| 2025-02-24 | Jill Klindt | EVP, CFO & Treasurer | MIXED | +8,682 | −$570.45K |
| 2025-02-24 | Michael D. Hawkins | EVP, Sales | MIXED | +5,668 | −$506.49K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Martin J. Vanderploeg | Director | 729,380 | $50.72M |
| Julie Iskow | President & CEO | 460,530 | $32.03M |
| David S. Mulcahy | Director | 240,373 | $16.72M |
| Barbara A Larson | EVP, CFO & Treasurer | 141,103 | $9.81M |
| Brandon Ziegler | EVP, CLO, CAO & Corp Secretary | 126,216 | $8.78M |
| Jill Klindt | EVP, CFO & Treasurer | 107,581 | $7.48M |
| Robert H Herz | Director | 74,181 | $5.16M |
| Michael M Crow | Director | 53,620 | $3.73M |
| Michael D. Hawkins | EVP, Sales | 52,306 | $3.64M |
| Suku V. Radia | Director | 45,442 | $3.16M |
| Junko Swain | SVP, Chief Accounting Officer | 28,830 | $2.00M |
| Astha Malik | Director | 7,288 | $506.84K |
| Mark S Peek | Director | 6,070 | $422.14K |
| Richard Scott Herren | Director | 4,947 | $344.04K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the WK quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.