Workiva Inc (WK) Insider Ownership

Historic Insider Ownership Trends

Data spanning the past 90 days through January 10, 2026 reveals that Workiva's three principal insider shareholders consist of Director Martin J. Vanderploeg (757.59K shares), Executive Vp & Cto Jeff D. Trom (511.52K shares), President & Ceo Julie Iskow (360.01K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Martin J. Vanderploeg 757,592 02 Jun, 2025
Jeff D. Trom Executive Vp & Cto 511,518 06 Sep, 2022
Julie Iskow President & Ceo 360,007 04 Apr, 2025
David S. Mulcahy 240,373 12 Dec, 2025
Mithun Banarjee Chief Customer Officer 160,551 06 Sep, 2022
Jill Klindt Evp And Cfo & Treasurer 107,581 27 May, 2025
Brandon Ziegler Evp And Clo And Cao & Corp Secretary 103,509 07 Mar, 2025
Robert H Herz 72,611 12 Dec, 2025
Michael D. Hawkins Evp And Sales 52,306 14 Mar, 2025
Michael M Crow 49,550 02 Jun, 2025
Suku V. Radia 41,372 02 Jun, 2025
Junko Swain Svp And Chief Accounting Officer 24,661 03 Sep, 2025
Brigid A. Bonner 21,588 03 Jun, 2024
Astha Malik 3,218 02 Jun, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
10 Dec, 2025 David S. Mulcahy Class A Common Stock D 1,162 $91.50 240,373 D S
10 Dec, 2025 Robert H Herz Class A Common Stock D 1,500 $91.44 35,802 D S
26 Nov, 2025 David S. Mulcahy Class A Common Stock D 808 $92.01 241,535 D S
02 Sep, 2025 Junko Swain - - 24,661 D
02 Sep, 2025 Junko Swain Class A Common Stock D 2,093 $82.24 24,661 D F
29 May, 2025 Martin J. Vanderploeg - - 317,707 D
29 May, 2025 Martin J. Vanderploeg Class A Common Stock A 3,218 - 317,707 D A
29 May, 2025 Suku V. Radia Class A Common Stock A 3,218 - 13,218 D A
29 May, 2025 Michael M Crow Class A Common Stock A 3,218 - 38,107 D A
29 May, 2025 David S. Mulcahy - - 242,343 D
29 May, 2025 David S. Mulcahy Class A Common Stock A 3,218 - 242,343 D A
29 May, 2025 Robert H Herz Class A Common Stock A 3,218 - 37,302 D A
29 May, 2025 Astha Malik Class A Common Stock A 3,218 - 3,218 D A
23 May, 2025 Jill Klindt Class A Common Stock D 7,773 $67.10 107,581 D S
09 May, 2025 Jill Klindt - - 115,354 D
09 May, 2025 Jill Klindt Class A Common Stock D 3,700 $0.00 115,354 D G
05 May, 2025 Martin J. Vanderploeg Class A Common Stock A 84,210 $0.00 439,885 I G
05 May, 2025 Martin J. Vanderploeg Class A Common Stock D 84,210 $0.00 314,489 D G
05 May, 2025 Martin J. Vanderploeg - - 439,885 I
15 Apr, 2025 Martin J. Vanderploeg - - 398,699 D