Form 4 for MU Micron Technology
Accepted 2025-10-15 00:00:00 ET · period of report 2025-10-13 · accession 0001632063-25-000007 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2025-10-15 | 2025-10-13+ | MU | ARNZEN APRIL S | EVP, CHRO | F - Tax | $181.79 | -45.7K | 166.4K | -22% | -$8.31M |
| DM | 2025-10-15 | 2025-10-13 | MU | ARNZEN APRIL S | EVP, CHRO | M - OptEx | $0.00 | +78.2K | 171.8K | +84% | $0 |
| D | 2025-10-15 | 2025-10-13 | MU | ARNZEN APRIL S | EVP, CHRO | A - Grant | $0.00 | +16.5K | 148.1K | +13% | $0 |
| DM | 2025-10-15 | 2025-10-13 | MU | ARNZEN APRIL S | EVP, CHRO | M - OptEx | $0.00 | +10.7K | 0 | New | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-10-13 | F | D | 6,082 | $181.60 | 147,177 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 2 | Common | Common Stock | 2025-10-13 | F | D | 4,188 | $181.60 | 182,206 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 3 | Common | Common Stock | 2025-10-13 | M | A | 8,910 | $0.00 | 186,394 | D | — | — | (F6) The Compensation Committee certified achievement of pre-established performance goals related to relative total shareholder return at a level of 111% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2023. The payout for the PRSUs (if earned) varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2023. The reported shares represent the shares earned, 50% of which vested upon certification of the performance at the end of year 2 of the performance period and 50% remain subject to vesting until the certification of performance goals at the end of year 3 of the performance period. |
| 4 | Common | Common Stock | 2025-10-13 | F | D | 4,907 | $181.60 | 177,484 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 5 | Common | Common Stock | 2025-10-13 | M | A | 10,439 | $0.00 | 182,391 | D | — | — | (F5) The Compensation Committee certified achievement of pre-established performance goals related to High Growth-Segments and HBM3E+ each at a level of 233% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2023. The payout for the PRSUs (if earned) varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2023. The reported shares represent the shares earned, 50% of which vested upon certification of the performance at the end of year 2 of the performance period and 50% remain subject to vesting until the certification of performance goals at the end of year 3 of the performance period. |
| 6 | Common | Common Stock | 2025-10-13 | F | D | 4,907 | $181.60 | 171,952 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 7 | Common | Common Stock | 2025-10-13 | M | A | 10,439 | $0.00 | 176,859 | D | — | — | (F5) The Compensation Committee certified achievement of pre-established performance goals related to High Growth-Segments and HBM3E+ each at a level of 233% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2023. The payout for the PRSUs (if earned) varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2023. The reported shares represent the shares earned, 50% of which vested upon certification of the performance at the end of year 2 of the performance period and 50% remain subject to vesting until the certification of performance goals at the end of year 3 of the performance period. |
| 8 | Common | Common Stock | 2025-10-13 | A | A | 16,520 | $0.00 | 148,100 | D | — | — | (F1) Restricted Stock Awards vest in three equal annual installments beginning on the first anniversary of the grant date. |
| 9 | Common | Common Stock | 2025-10-13 | F | D | 5,335 | $181.60 | 142,765 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 10 | Common | Common Stock | 2025-10-13 | F | D | 3,689 | $181.60 | 139,076 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 11 | Common | Common Stock | 2025-10-13 | M | A | 14,183 | $0.00 | 153,259 | D | — | — | (F3) The Compensation Committee certified achievement of pre-established performance goals related to DRAM revenue and Data Center NAND each at a level of 233% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2022. As reported at grant, the PRSUs could result in a payout (if earned) that varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2022. 100% of any shares earned as a result of the achievement of the performance goals measured at the end of year 3 of the performance period as well as certain unvested shares earned as a result of the achievement of performance goals measured at the end of year 2 of the performance period which remained subject to vesting vested upon certification of the achievement of performance goals at the end of year 3 of the performance period. |
| 12 | Common | Common Stock | 2025-10-15 | F | D | 1,588 | $187.06 | 180,618 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 13 | Common | Common Stock | 2025-10-13 | M | A | 21,808 | $0.00 | 168,985 | D | — | — | (F3) The Compensation Committee certified achievement of pre-established performance goals related to DRAM revenue and Data Center NAND each at a level of 233% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2022. As reported at grant, the PRSUs could result in a payout (if earned) that varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2022. 100% of any shares earned as a result of the achievement of the performance goals measured at the end of year 3 of the performance period as well as certain unvested shares earned as a result of the achievement of performance goals measured at the end of year 2 of the performance period which remained subject to vesting vested upon certification of the achievement of performance goals at the end of year 3 of the performance period. |
| 14 | Common | Common Stock | 2025-10-13 | F | D | 9,666 | $181.60 | 159,319 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 15 | Common | Common Stock | 2025-10-13 | M | A | 12,446 | $0.00 | 171,765 | D | — | — | (F4) The Compensation Committee certified achievement of pre-established performance goals related to relative total shareholder return at a level of 128% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2022. As reported at grant, the PRSUs could result in a payout (if earned) that varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2022. 100% of any shares earned as a result of the achievement of the performance goals measured at the end of year 3 of the performance period as well as certain unvested shares earned as a result of the achievement of performance goals measured at the end of year 2 of the performance period (which remained subject to vesting) vested upon certification of the achievement of performance goals at the end of year 3 of the performance period. |
| 16 | Common | Common Stock | 2025-10-13 | F | D | 5,345 | $181.60 | 166,420 | D | — | — | (F2) Withholding of common stock shares to satisfy tax withholding obligations in connection with the vesting of previously granted awards. |
| 17 | Derivative | Performance Restricted Stock Units | 2025-10-13 | M | A | 10,440 | $0.00 | 10,440 | D | $0.00 · — to — | 10,440 Common Stock | (F5) The Compensation Committee certified achievement of pre-established performance goals related to High Growth-Segments and HBM3E+ each at a level of 233% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2023. The payout for the PRSUs (if earned) varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2023. The reported shares represent the shares earned, 50% of which vested upon certification of the performance at the end of year 2 of the performance period and 50% remain subject to vesting until the certification of performance goals at the end of year 3 of the performance period. |
| 18 | Derivative | Performance Restricted Stock Units | 2025-10-13 | M | A | 8,911 | $0.00 | 8,911 | D | $0.00 · — to — | 8,911 Common Stock | (F6) The Compensation Committee certified achievement of pre-established performance goals related to relative total shareholder return at a level of 111% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2023. The payout for the PRSUs (if earned) varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2023. The reported shares represent the shares earned, 50% of which vested upon certification of the performance at the end of year 2 of the performance period and 50% remain subject to vesting until the certification of performance goals at the end of year 3 of the performance period. |
| 19 | Derivative | Performance Restricted Stock Units | 2025-10-13 | M | A | 10,440 | $0.00 | 10,440 | D | $0.00 · — to — | 10,440 Common Stock | (F5) The Compensation Committee certified achievement of pre-established performance goals related to High Growth-Segments and HBM3E+ each at a level of 233% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2023. The payout for the PRSUs (if earned) varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2023. The reported shares represent the shares earned, 50% of which vested upon certification of the performance at the end of year 2 of the performance period and 50% remain subject to vesting until the certification of performance goals at the end of year 3 of the performance period. |
| 20 | Derivative | Performance Restricted Stock Units | 2025-10-13 | M | D | 8,410 | $0.00 | 0 | D | $0.00 · — to — | 12,446 Common Stock | (F4) The Compensation Committee certified achievement of pre-established performance goals related to relative total shareholder return at a level of 128% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2022. As reported at grant, the PRSUs could result in a payout (if earned) that varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2022. 100% of any shares earned as a result of the achievement of the performance goals measured at the end of year 3 of the performance period as well as certain unvested shares earned as a result of the achievement of performance goals measured at the end of year 2 of the performance period (which remained subject to vesting) vested upon certification of the achievement of performance goals at the end of year 3 of the performance period. |
| 21 | Derivative | Performance Restricted Stock Units | 2025-10-13 | M | D | 5,332 | $0.00 | 0 | D | $0.00 · — to — | 21,808 Common Stock | (F3) The Compensation Committee certified achievement of pre-established performance goals related to DRAM revenue and Data Center NAND each at a level of 233% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2022. As reported at grant, the PRSUs could result in a payout (if earned) that varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2022. 100% of any shares earned as a result of the achievement of the performance goals measured at the end of year 3 of the performance period as well as certain unvested shares earned as a result of the achievement of performance goals measured at the end of year 2 of the performance period which remained subject to vesting vested upon certification of the achievement of performance goals at the end of year 3 of the performance period. |
| 22 | Derivative | Performance Restricted Stock Units | 2025-10-13 | M | D | 5,332 | $0.00 | 0 | D | $0.00 · — to — | 14,183 Common Stock | (F3) The Compensation Committee certified achievement of pre-established performance goals related to DRAM revenue and Data Center NAND each at a level of 233% of target under the performance-based restricted stock units ("PRSU") with a 3-year performance period previously awarded on October 13, 2022. As reported at grant, the PRSUs could result in a payout (if earned) that varies (starting at 0%) based on actual achievement of the goals, subject to a 200% aggregate limit on the total target shares that may be received under the PRSUs awarded on October 13, 2022. 100% of any shares earned as a result of the achievement of the performance goals measured at the end of year 3 of the performance period as well as certain unvested shares earned as a result of the achievement of performance goals measured at the end of year 2 of the performance period which remained subject to vesting vested upon certification of the achievement of performance goals at the end of year 3 of the performance period. |