Mattel, Inc.
US ˙ NasdaqGS ˙ US5770811025

SecurityMAT / Mattel, Inc.
InstitutionCommerce Bank
Latest Disclosed Ownership28,365 shares
Latest Disclosed Value $ 412,143
Commerce Bank reports 1.79% increase in ownership of MAT / Mattel, Inc.

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 28,365 shares of Mattel, Inc. (US:MAT) valued at $412,143 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 27,865 shares of Mattel, Inc.. This represents a change in shares of 1.79% during the quarter. The current value of the position is $406,754 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F MATTEL COM 577081102 28,365 500 1.79 412 -25.36 0.0020
2026-02-13 2025-12-31 13F MATTEL COM 577081102 27,865 0 0.00 553 17.95 0.0031
2025-11-12 2025-09-30 13F MATTEL COM 577081102 27,865 0 0.00 469 -14.75 0.0026
2025-08-07 2025-06-30 13F MATTEL COM 577081102 27,865 0 0.00 549 1.48 0.0032
2025-05-08 2025-03-31 13F MATTEL COM 577081102 27,865 0 0.00 541 9.51 0.0035
2025-02-13 2024-12-31 13F MATTEL COM 577081102 27,865 0 0.00 494 -6.79 0.0030
2024-11-08 2024-09-30 13F MATTEL COM 577081102 27,865 -327 -1.16 531 15.72 0.0033
2024-08-12 2024-06-30 13F MATTEL COM 577081102 28,192 -800 -2.76 458 -20.21 0.0030
2024-05-03 2024-03-31 13F MATTEL COM 577081102 28,992 0 0.00 574 4.94 0.0038
2024-02-09 2023-12-31 13F MATTEL COM 577081102 28,992 12,721 78.18 547 52.79 0.0039
2023-11-14 2023-09-30 13F MATTEL COM 577081102 16,271 0 0.00 358 12.93 0.0028
2023-08-08 2023-06-30 13F MATTEL COM 577081102 16,271 16,271 318 0.0024
2022-08-12 2022-06-30 13F MATTEL COM 577081102 0 -20,583 -100.00 0 -100.00
2022-05-09 2022-03-31 13F MATTEL COM 577081102 20,583 105 0.51 457 3.63 0.0031
2022-02-14 2021-12-31 13F MATTEL COM 577081102 20,478 -24 -0.12 441 16.05 0.0029
2021-11-09 2021-09-30 13F MATTEL COM 577081102 20,502 24 0.12 380 -7.77 0.0027
2021-08-09 2021-06-30 13F MATTEL COM 577081102 20,478 0 0.00 412 0.98 0.0029
2021-05-05 2021-03-31 13F MATTEL COM 577081102 20,478 0 0.00 408 14.29 0.0031
2021-02-09 2020-12-31 13F MATTEL COM 577081102 20,478 0 0.00 357 48.75 0.0029
2020-11-06 2020-09-30 13F MATTEL COM 577081102 20,478 0 0.00 240 21.21 0.0022
2020-08-07 2020-06-30 13F MATTEL COM 577081102 20,478 20,478 198 0.0019
2018-02-12 2017-12-31 13F MATTEL COM 577081102 0 -10,143 -100.00 0 -100.00
2017-11-07 2017-09-30 13F MATTEL COM 577081102 10,143 0 0.00 219 0.00 0.0031
2017-08-08 2017-06-30 13F MATTEL COM 577081102 10,143 990 10.82 219 -6.41 0.0031
2017-05-05 2017-03-31 13F MATTEL COM 577081102 9,153 -575 -5.91 234 -12.69 0.0033
2017-02-08 2016-12-31 13F MATTEL COM 577081102 9,728 0 0.00 268 -8.84 0.0040
2016-11-03 2016-09-30 13F MATTEL COM 577081102 9,728 -165 -1.67 294 -5.16 0.0046
2016-08-09 2016-06-30 13F MATTEL COM 577081102 9,893 204 2.11 310 -4.91 0.0049
2016-04-27 2016-03-31 13F MATTEL COM 577081102 9,689 -443 -4.37 326 18.55 0.0054
2016-02-12 2015-12-31 13F MATTEL COM 577081102 10,132 -9 -0.09 275 28.50 0.0046
2015-11-10 2015-09-30 13F MATTEL COM 577081102 10,141 -1,085 -9.67 214 -25.69 0.0037
2015-08-03 2015-06-30 13F MATTEL COM 577081102 11,226 684 6.49 288 19.50 0.0045
2015-05-06 2015-03-31 13F MATTEL COM 577081102 10,542 1,085 11.47 241 -17.47 0.0037
2015-02-11 2014-12-31 13F MATTEL COM 577081102 9,457 -2,219 -19.00 292 -18.44 0.0046
2014-11-06 2014-09-30 13F MATTEL COM 577081102 11,676 624 5.65 358 -16.74 0.0059
2014-08-05 2014-06-30 13F MATTEL COM 577081102 11,052 353 3.30 430 0.23 0.0070
2014-05-09 2014-03-31 13F MATTEL COM 577081102 10,699 2,131 24.87 429 5.41 0.0073
2014-02-14 2013-12-31 13F MATTEL COM 577081102 8,568 -138 -1.59 407 11.51 0.0070
2013-11-05 2013-09-30 13F/A-1 MATTEL COM 577081102 7,173 -1,745 1,052 0.0190
2013-11-05 2013-09-30 13F/A-2 MATTEL COM 577081102 8,706 -212 -2.38 365 -9.65 0.0066
2013-11-04 2013-09-30 13F MATTEL COM 577081102 7,173 1,052
2013-08-07 2013-06-30 13F MATTEL COM 577081102 8,918 772 9.48 404 13.48 0.0075
2013-08-08 2013-03-31 13F/A-1 MATTEL COM 577081102 8,146 8,146 356 0.0069
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.