Martin J. Vanderploeg - 15 Sep 2026 Form 4 Insider Report for WORKIVA INC (WK)

Reporting relationship: Director
Issuer ticker: WK
Reported as of: 15 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 16 Sep 2026, 18:43:27 UTC
Prior SEC filing: 20 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Brandon E. Ziegler as attorney-in-fact for Martin J. Vanderploeg

Key filing fact

Martin J. Vanderploeg filed Form 4 for WORKIVA INC (WK) on 16 Sep 2026.

Key facts

This page summarizes Martin J. Vanderploeg's Form 4 filing for WORKIVA INC (WK).
2 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 16 Sep 2026, 18:43.

Change

Previous filing in this sequence was filed on 20 Aug 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001014008 Primary reporting owner

VANDERPLOEG MARTIN J.

Relationship: Director
Address: 2900 UNIVERSITY BOULEVARD, AMES
Signature: /s/ Brandon E. Ziegler as attorney-in-fact for Martin J. Vanderploeg
Signature date: 16 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

WK holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 292,275
Date: 15 Sep 2026
Ownership: Direct

WK holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 437,105
Date: 15 Sep 2026
Ownership: By living trust

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

WK transaction Derivative

Class B Common Stock

Gift

Transaction value
Shares: -60,000
Change %: -5%
Price: $0.000000^*
Shares after: 1,141,832
Date: 15 Sep 2026
Ownership: By living trust
Underlying class: Class A Common Stock
Underlying amount: 60,000
Exercise price
Footnotes: F1, F2

WK transaction Derivative

Class B Common Stock

Gift

Transaction value
Shares: +60,000
Change %
Price: $0.000000^*
Shares after: 60,000
Date: 15 Sep 2026
Ownership: By family trust
Underlying class: Class A Common Stock
Underlying amount: 60,000
Exercise price
Footnotes: F1, F2

WK holding Derivative

Employee Stock Option to Purchase Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 200,204
Date: 15 Sep 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 200,204
Exercise price: $12.40
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Each share of Class B Common Stock is convertible, at any time at the election of the holder, into one share of Class A Common Stock. In addition, each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon (i) the date specified by the holders of at least 66 2/3% of the outstanding shares of Class B Common Stock, (ii) any transfer, except for certain "qualified transfers" (as defined in the Issuer's Certificate of Incorporation) or (iii) upon the death of a natural person holding shares of Class B Common Stock (subject to certain exceptions as defined in the Issuer's Certificate of Incorporation).

Footnote F2

On September 15, 2026, the reporting person contributed 60,000 shares of indirectly owned Class B Common Stock to an irrevocable trust for which the Reporting Person serves as an investment advisor, and of which the Reporting Person's immediate family member is beneficiary.

Footnote F3

Grant of stock option pursuant to the Workiva Inc. 2014 Equity Incentive Plan.

Footnote F4

Vests in three equal annual installments commencing on the first anniversary of the grant date.