Illustrative Mathematics
Donations deductibleIllustrative Mathematics' network
8 peoplei8 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (8). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.The board
8 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 8 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.| Name | Role as filed | Since | On the board |
|---|---|---|---|
| Barbara Chow | Director | 2018 | 8 yrs |
| Denise Walston | Director | 2020 | 6 yrs |
| Dominick Sekich | Director | 2020 | 6 yrs |
| George Zettler | Treasurer/Secretary | 2018 | 8 yrs |
| Heather Hill | Director | 2018 | 8 yrs |
| Lisa Carmona | Director | 2019 | 7 yrs |
| Michael Casserly | Director | 2022 | 4 yrs |
| Paul Palmer JR | Director | 2022 | 4 yrs |
Under 5 years5 to 6 years6 years or more
Officers and senior leadership
26 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.| Name | Title as filed | On the filings |
|---|---|---|
| Brandi Tyler | VP of Marketing | since 2022 |
| Brendan Shean | Software Enginner | since 2018 |
| Camelia Valentine Braxton | VP Human Resources and Talent MGT | since 2022 |
| Dionne Aminata - SR Director | Strategic Intiatives (Thru Sept.) | 2023 |
| Dylan Dechant | Sr Director of Engineering | 2023 |
| Elizabeth Ramirez - Interim VP | Of Prof Learning Products & Services | 2022 |
| Elizabeth Ramirez - VP of | Implementation Programs | 2023 |
| Eric Connally | Software Enginner | since 2018 |
| Gail Hartman - SR VP | Product Strategy and Development | 2023 |
| Kari Fines | Director of Operations | since 2019 |
| Karl Nelson | Vice President, COO and CTO | since 2018 |
| Karl Nelson - CIO VP of | Technology and Information | since 2022 |
| Katherine Nowak | Content Development Director | since 2019 |
| Katherine Nowak to 42922 | VP, Product Strategy | 2022 |
| Kristen Welch | CFO and Vice President | since 2018 |
| Kristin Umland | President, Cpo, VP Product Strategy | since 2019 |
| Lakan Cook | Director of Im Certified Partnerships | 2019 |
| Leah NIU - SR Specialist | Salesforce Architect | 2023 |
| Leah NIU SR Director | Of Salesforce Mgmt and It | 2022 |
| MAX Ray-Riek SR Director | Of K-12 Pro. Learning Catalogue | 2022 |
| Olivia Russell | Director of Im Certified Partnerships | 2020 |
| Shelly Jurmain | Interim CFO and Controller | 2018 |
| Tamara Richards | Controller | since 2022 |
| Trisha Thomas | Vice President | since 2018 |
| William McCallum | CEO | since 2020 |
| Windy Hamilton -Senior Director | Revenue Operations & Reporting | 2022 |
Pay and hours
year to 31 December 2024iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.| Name | Title as filed | Hours a week | Pay from the organisation | Related organisations | Other |
|---|---|---|---|---|---|
| William McCallum | CEO | 40 | $378k | $32k | |
| Kristin Umland | President | 40 | $318k | $40k | |
| Kristen Welch | CFO | 40 | $291k | $29k | |
| Gail Hartman - Sr VP | Product Development | 40 | $245k | $19k | |
| Dylan Dechant- VP of | Engineering and Innovation | 40 | $234k | $35k | |
| Elizabeth Ramirez - VP of | Implementation Programs | 40 | $198k | $16k | |
| Brandi Tyler- VP of | Brand and Communications | 40 | $193k | $37k | |
| Aurora Ziobrowski | Director of Engineering | 40 | $191k | $16k | |
| Latoya Byrd- VP of | Client and Partner Success | 40 | $186k | $33k | |
| Tamara Richards- Associate VP | Business Solutions Adminstration | 40 | $178k | $26k | |
| Eric Connally | Principal Software Engineer | 40 | $175k | $6k | |
| Windy Hamilton- Senior Director | Revenue Operations and Reporting | 40 | $172k | $28k | |
| Alejandra Alvarado - Senior Directo | Product Strategy | 40 | $168k | $8k | |
| George Zettler | Treasurer/Secretary | 0.5 | $0 | ||
| Barbara Chow | Director | 0.5 | $0 | ||
| Lisa Carmona | Director | 0.5 | $0 | ||
| Heather Hill | Director | 0.5 | $0 | ||
| Denise Walston | Director | 0.5 | $0 | ||
| Rhett Dornback-Bender | Director | 0.5 | $0 | ||
| Sara Allen | Director | 0.5 | $0 |
About
- Legal name
- Illustrative Mathematics
- EIN
- 463513958
- Address
- 11900 N la Canada Dr Unit 69822, Oro Valley, AZ, 85737-4074
- State
- Arizona
- Mission
- At illustrative mathematics we are committed to creating a world where all learners know, use, and enjoy mathematics. We craft and deliver high-quality educational resources for teachers and students by developing great people who work in spirited (continued on sch o) teams to do extraordinary things. (as filed on the Form 990)
- Activity (NTEE)
- B01 Education
- IRS classification
- 501(c)03 (tax-exempt under section 501(c)(3) where shown)
- Classified purpose
- Education
- Size band
- 8 (IRS master file code)
- Formed
- 2013
- Principal officer
- Kristin Umland (as named on the Form 990)
- IRS ruling date
- 1 July 2014
- Status
- Code 01 (unconditional exemption)
- Form 990 filings on record
- 5, latest 2023
- IRS Publication 78
- PC (contributions deductible)
Most connected
Longest observed on the filings
≥8years on the filingsBarbara Chow
≥8years on the filingsGeorge Zettler
≥8years on the filingsHeather Hill
≥7years on the filingsLisa Carmona
Latest return
year to 31 December 2024iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2024. US dollars, as filed.- Total assets
- $11.7m
- Total liabilities
- $3m
- Net assets or fund balances
- $8.6m
- Contributions and grants received
- $4m
- Program service revenue
- $14.3m
- Employees
- 107
- Volunteers
- 7
State registration
1 entityiBusiness-entity registers published by US states. These records are matched to this organisation by name and state, not by EIN, and are labelled as likely matches. Street addresses are not shown.Illustrative Mathematics likely matchiMatched by exact name and state (and ZIP where shown). State registers do not publish EINs, so this is not a confirmed match. Source: Texas Comptroller of Public Accounts, entity data (data.texas.gov 9cir-efmm). Licence not stated. Data last fetched 18 October 2026.
- State
- Texas
- Status
- Not stated
- Formed
- Not stated
- Registered agent
- Not stated
This register does not publish officers or directors.