Mattel, Inc.
US ˙ NasdaqGS ˙ US5770811025

SecurityMAT / Mattel, Inc.
InstitutionKBC Group NV
Latest Disclosed Ownership9,701 shares
Latest Disclosed Value $ 141
KBC Group NV ownership in MAT / Mattel, Inc.

On May 7, 2026 - KBC Group NV filed a 13F-HR form disclosing ownership of 9,701 shares of Mattel, Inc. (US:MAT) valued at $140,956 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 9,701 shares of Mattel, Inc.. The current value of the position is $139,112 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)
2026-05-07 2026-03-31 13F MATTEL COM 577081102 9,701 0 0.00 0 0.0002
2026-01-26 2025-12-31 13F MATTEL COM 577081102 9,701 0 0.00 0 0.0004
2026-01-20 2025-09-30 13F MATTEL COM 577081102 9,701 0 0.00 0 0.0004
2025-08-08 2025-06-30 13F MATTEL COM 577081102 9,701 -5,523 -36.28 0 0.0005
2025-04-25 2025-03-31 13F MATTEL COM 577081102 15,224 240 1.60 0 0.0009
2025-01-22 2024-12-31 13F MATTEL COM 577081102 14,984 4,818 47.39 0 0.0007
2024-11-06 2024-09-30 13F MATTEL COM 577081102 10,166 1,229 13.75 0 0.0006
2024-07-17 2024-06-30 13F MATTEL COM 577081102 8,937 1,129 14.46 0 0.0004
2024-05-08 2024-03-31 13F MATTEL COM 577081102 7,808 984 14.42 0 0.0005
2024-02-13 2023-12-31 13F MATTEL COM 577081102 6,824 1,187 21.06 0 0.0005
2024-02-15 2023-09-30 13F/A-1 MATTEL COM 577081102 5,637 5,637 0 0.0005
2024-02-14 2023-03-31 13F/A-1 MATTEL COM 577081102 0 -1,341 -100.00 0 0.0000
2023-05-04 2023-03-31 13F MATTEL COM 577081102 0 -897 0 0.0000
2024-02-14 2022-12-31 13F/A-1 MATTEL COM 577081102 1,341 444 49.50 0 0.0001
2023-02-13 2022-12-31 13F MATTEL COM 577081102 897 0 0 0.0000
2024-02-15 2022-09-30 13F/A-1 MATTEL COM 577081102 897 897 0 0.0001
2022-11-08 2022-09-30 13F MATTEL COM 577081102 897 897 17 0.0001
2024-02-14 2022-03-31 13F/A-1 MATTEL COM 577081102 0 -1,671 -100.00 0 0.0000
2022-05-06 2022-03-31 13F MATTEL COM 577081102 0 -1,671 0
2024-02-14 2021-12-31 13F/A-1 MATTEL COM 577081102 1,671 -845 -33.59 0 -100.00 0.0001
2022-02-03 2021-12-31 13F MATTEL COM 577081102 1,671 -845 36 0.0001
2021-11-10 2021-09-30 13F MATTEL COM 577081102 2,516 0 0.00 47 -7.84 0.0002
2022-02-15 2021-06-30 13F/A-1 MATTEL COM 577081102 2,516 0 0.00 51 2.00 0.0002
2021-08-11 2021-06-30 13F MATTEL COM 577081102 2,516 0 51 0.0002
2022-02-14 2021-03-31 13F/A-1 MATTEL COM 577081102 2,516 0 0.00 50 -88.61 0.0002
2021-04-26 2021-03-31 13F MATTEL COM 577081102 2,516 0 50 0.0002
2022-02-14 2020-12-31 13F/A-1 MATTEL COM 577081102 2,516 312 14.16 439 1,588.46 0.0002
2021-02-10 2020-12-31 13F MATTEL COM 577081102 2,516 312 44 0.0002
2022-02-14 2020-09-30 13F/A-1 MATTEL COM 577081102 2,204 1,359 160.83 26 225.00 0.0002
2020-10-28 2020-09-30 13F MATTEL COM 577081102 2,204 1,359 26 0.0002
2022-02-14 2020-06-30 13F/A-1 MATTEL COM 577081102 845 0 0.00 8 14.29 0.0001
2020-08-10 2020-06-30 13F MATTEL COM 577081102 845 0 8 0.0001
2020-05-04 2020-03-31 13F MATTEL COM 577081102 845 -4,238 -83.38 7 -89.71 0.0001
2020-02-11 2019-12-31 13F MATTEL COM 577081102 5,083 -18,730 -78.65 68 -74.91 0.0004
2019-11-07 2019-09-30 13F MATTEL COM 577081102 23,813 23,468 6,802.32 271 6,675.00 0.0020
2019-12-03 2019-06-30 13F/A-2 MATTEL COM 577081102 345 0 0.00 4 0.00 0.0347
2019-08-08 2019-06-30 13F/A-1 MATTEL COM 577081102 23,810 23,465 267 0.0021
2019-07-30 2019-06-30 13F MATTEL COM 577081102 23,810 0 267
2019-12-03 2019-03-31 13F/A-2 MATTEL COM 577081102 345 0 0.00 4 33.33 0.0364
2019-08-07 2019-03-31 13F/A-1 MATTEL COM 577081102 23,810 23,465 310 0.0026
2019-05-10 2019-03-31 13F MATTEL COM 577081102 23,810 0 310
2019-12-03 2018-12-31 13F/A-1 MATTEL COM 577081102 345 0 0.00 3 -40.00 0.0350
2019-01-31 2018-12-31 13F MATTEL COM 577081102 23,810 0 238 2,651.2845
2019-12-03 2018-09-30 13F/A-1 MATTEL COM 577081102 345 0 0.00 5 -16.67 0.0493
2018-11-14 2018-09-30 13F MATTEL COM 577081102 23,810 23,465 374 2,829.1070
2019-12-03 2018-06-30 13F/A-1 MATTEL COM 577081102 345 0 0.00 6 20.00 0.0663
2018-08-03 2018-06-30 13F MATTEL COM 577081102 23,810 0 391 3,404.1297
2019-12-03 2018-03-31 13F/A-2 MATTEL COM 577081102 345 -800 -69.87 5 -72.22 0.0533
2018-08-03 2018-03-31 13F/A-1 MATTEL COM 577081102 23,810 23,465 313 0.0029
2018-05-09 2018-03-31 13F MATTEL COM 577081102 23,810 -26,708 313
2019-12-03 2017-12-31 13F/A-2 MATTEL COM 577081102 1,145 0 0.00 18 0.00 0.1919
2018-08-03 2017-12-31 13F/A-1 MATTEL COM 577081102 50,518 49,373 777 0.0066
2018-02-07 2017-12-31 13F MATTEL COM 577081102 50,518 -26,631 777
2019-12-03 2017-09-30 13F/A-1 MATTEL COM 577081102 1,145 0 0.00 18 -28.00 0.2299
2017-11-13 2017-09-30 13F MATTEL COM 577081102 77,149 12,307 1,194 10,837.4843
2019-12-03 2017-06-30 13F/A-1 MATTEL COM 577081102 1,145 -63,697 -98.23 25 -98.49 0.3577
2017-08-04 2017-06-30 13F MATTEL COM 577081102 64,842 0 1,396 13,491.4892
2017-05-10 2017-03-31 13F MATTEL COM 577081102 64,842 -31,695 -32.83 1,661 -37.56 0.0150
2017-02-16 2016-12-31 13F MATTEL COM 577081102 96,537 5,950 6.57 2,660 -3.03 0.0264
2016-11-03 2016-09-30 13F MATTEL COM 577081102 90,587 -809 -0.89 2,743 -4.06 0.0324
2016-08-03 2016-06-30 13F MATTEL COM 577081102 91,396 -35,749 -28.12 2,859 -33.12 0.0409
2016-05-11 2016-03-31 13F MATTEL COM 577081102 127,145 72,382 132.17 4,275 187.30 0.0710
2016-02-11 2015-12-31 13F MATTEL COM 577081102 54,763 28,078 105.22 1,488 164.77 0.0274
2015-11-12 2015-09-30 13F MATTEL COM 577081102 26,685 -4,682 -14.93 562 -30.27 0.0113
2015-12-16 2015-06-30 13F/A-1 MATTEL COM 577081102 31,367 -29,887 -48.79 806 -42.43 0.0104
2015-07-31 2015-06-30 13F MATTEL COM 577081102 31,367 806
2015-12-16 2015-03-31 13F/A-1 MATTEL COM 577081102 61,254 16,109 35.68 1,400 0.21 0.0178
2015-04-30 2015-03-31 13F MATTEL COM 577081102 61,254 1,400
2015-12-15 2014-12-31 13F/A-1 MATTEL COM 577081102 45,145 -168,382 -78.86 1,397 -78.66 0.0166
2015-02-12 2014-12-31 13F MATTEL COM 577081102 45,145 1,397
2014-10-16 2014-09-30 13F MATTEL COM 577081102 213,527 4,265 2.04 6,545 -19.74 0.2284
2014-08-01 2014-06-30 13F MATTEL COM 577081102 209,262 -39,325 -15.82 8,155 -18.21 0.0932
2014-04-30 2014-03-31 13F MATTEL COM 577081102 248,587 5,797 2.39 9,971 -13.69 0.1575
2014-01-21 2013-12-31 13F MATTEL COM 577081102 242,790 14,284 6.25 11,552 20.70 0.1747
2013-11-06 2013-09-30 13F MATTEL COM 577081102 228,506 55,152 31.81 9,571 21.85 0.1540
2013-07-29 2013-06-30 13F MATTEL COM 577081102 173,354 173,354 7,855 0.1457
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.