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Nasdaq · USD

MPWR

MONOLITHIC POWER SYSTEMS, INC.

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Tapewire entity
877
SEC CIK
0001280452
Parsed reports
919

Last 12 months

Inside the activity.

0 purchase rows · 313 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 20250114
Dec 2025016
Jan 2026016
Feb 2026055
Mar 202609
Apr 2026024
May 2026045
Jun 202601
Jul 2026019
Aug 202606
Sep 202608
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
September 28, 2026 Filed Sep 30, 2026 21:21 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 130 $1,356.94 $176,402.20
Disclosure

SEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 8

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 818,264

F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,356.78 to $1,357.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 28, 2026 Filed Sep 30, 2026 21:21 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 10,967 $1,351.43 $14,821,132.81
Disclosure

SEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 7

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 818,394

F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,350.84 to $1,355.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 28, 2026 Filed Sep 30, 2026 21:21 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 6,343 $1,347.15 $8,544,972.45
Disclosure

SEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 6

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 829,361

F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,345.66 to $1,350.47. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 28, 2026 Filed Sep 30, 2026 21:21 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 5,783 $1,343.76 $7,770,964.08
Disclosure

SEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 5

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 835,704

F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,340.69 to $1,345.65. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 28, 2026 Filed Sep 30, 2026 21:21 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 2,949 $1,338.66 $3,947,708.34
Disclosure

SEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 4

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 841,487

F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,335.68 to $1,340.66. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 28, 2026 Filed Sep 30, 2026 21:21 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 1,111 $1,333.34 $1,481,340.74
Disclosure

SEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 3

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 844,436

F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,330.65 to $1,335.51. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 28, 2026 Filed Sep 30, 2026 21:21 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 2,121 $1,328.54 $2,817,833.34
Disclosure

SEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 845,547

F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,325.65 to $1,330.62. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 28, 2026 Filed Sep 30, 2026 21:21 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 596 $1,323.31 $788,692.76
Disclosure

SEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 847,668

F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,320.64 to $1,325.61. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F2 · balance_after: Ending balance includes 1 share acquired on August 17, 2026, through the Company's qualified ESPP program.

Read SEC document
August 31, 2026 Filed Sep 2, 2026 21:26 UTC
Tseng SariaEVP & General Counsel
GiftCommon Stock 2,000 $0.00 $0.00
Disclosure

SEC source: 0001214659-26-011363 · marketforms-73915.xml · nonDerivative · entry 2

Tseng Saria · CIK 0001312593 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Indirect · C&T Family Trust

Disclosed balance after: 2,000

F2 · shares: 2,000 shares were received by C&T Family Irrevocable Trust, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer.

Read SEC document
August 31, 2026 Filed Sep 2, 2026 21:26 UTC
Tseng SariaEVP & General Counsel
GiftCommon Stock 2,000 $0.00 $0.00
Disclosure

SEC source: 0001214659-26-011363 · marketforms-73915.xml · nonDerivative · entry 1

Tseng Saria · CIK 0001312593 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 142,218

F1 · shares: 2,000 shares were transferred from the reporting person's direct holdings to C&T Family Irrevocable Trust, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer.

Read SEC document
August 24, 2026 Filed Aug 25, 2026 23:13 UTC SaleCommon Stock 50 $1,281.57 $64,078.50
Disclosure

SEC source: 0001214659-26-010853 · marketforms-73899.xml · nonDerivative · entry 1

CHANG KUO WEI HERBERT · CIK 0001192171 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 515

Read SEC document
August 24, 2026 Filed Aug 26, 2026 23:22 UTC
DEAN ROBERT W IIInterim CFO
OtherCommon Stock 5 $0.00 $0.00
Disclosure

SEC source: 0001214659-26-010932 · marketforms-73892.xml · nonDerivative · entry 2

DEAN ROBERT W II · CIK 0001445300 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,089

F3 · price: The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the completion of the transfer, the reporting person no longer retains any pecuniary interest in the shares.

Read SEC document
August 24, 2026 Filed Aug 26, 2026 23:22 UTC
DEAN ROBERT W IIInterim CFO
SaleCommon Stock 32 $1,297.72 $41,527.04
Disclosure

SEC source: 0001214659-26-010932 · marketforms-73892.xml · nonDerivative · entry 1

DEAN ROBERT W II · CIK 0001445300 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,094

F1 · shares: The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.

F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,296.07 to $1,298.01. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
August 17, 2026 Filed Aug 20, 2026 00:44 UTC
DEAN ROBERT W IIInterim CFO
SaleCommon Stock 6 $1,413.64 $8,481.84
Disclosure

SEC source: 0001214659-26-010630 · marketforms-73781.xml · nonDerivative · entry 1

DEAN ROBERT W II · CIK 0001445300 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,126

F1 · shares: The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.

Read SEC document
August 11, 2026 Filed Aug 13, 2026 21:23 UTC SaleCommon Stock 50 $1,420.00 $71,000.00
Disclosure

SEC source: 0001214659-26-010101 · marketforms-73754.xml · nonDerivative · entry 1

CHANG KUO WEI HERBERT · CIK 0001192171 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 565

Read SEC document
August 05, 2026 Filed Aug 6, 2026 22:20 UTC
DEAN ROBERT W IIInterim CFO
SaleCommon Stock 105 $1,344.27 $141,148.35
Disclosure

SEC source: 0001214659-26-009739 · marketforms-73703.xml · nonDerivative · entry 1

DEAN ROBERT W II · CIK 0001445300 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,132

Read SEC document
August 04, 2026 Filed Aug 7, 2026 00:31 UTC
Sciammas MauriceEVP, WW Sales & Marketing
GiftCommon Stock 25,000 $0.00 $0.00
Disclosure

SEC source: 0001214659-26-009744 · marketforms-73704.xml · nonDerivative · entry 2

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: No plan indicated

Ownership: Indirect · Various Sciammas GRATs

Disclosed balance after: 36,062

F2 · shares: 25,000 shares were received by two GRATs, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer.

Read SEC document
August 04, 2026 Filed Aug 7, 2026 00:31 UTC
Sciammas MauriceEVP, WW Sales & Marketing
GiftCommon Stock 25,000 $0.00 $0.00
Disclosure

SEC source: 0001214659-26-009744 · marketforms-73704.xml · nonDerivative · entry 1

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 126,644

F1 · shares: 25,000 shares were transferred from the reporting person's direct holdings to two GRATs, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer.

Read SEC document
August 03, 2026 Filed Aug 5, 2026 21:33 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 30 $1,343.94 $40,318.20
Disclosure

SEC source: 0001214659-26-009676 · marketforms-73662.xml · nonDerivative · entry 1

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Indirect · Clement Sciammas Trust

Disclosed balance after: 1,119

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.

Read SEC document
July 25, 2026 Filed Jul 28, 2026 22:42 UTC
DEAN ROBERT W IIInterim CFO
GrantCommon Stock 1,359 $0.00 $0.00
Disclosure

SEC source: 0001214659-26-009117 · marketforms-72961.xml · nonDerivative · entry 1

DEAN ROBERT W II · CIK 0001445300 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,237

F1 · shares: On July 25, 2023, the reporting person was granted market-based restricted stock units ("MSUs") subject to the achievement of stock price targets and relative total stockholder return percentile rank over a three-year performance period. On July 25, 2026, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance conditions for the MSUs, which resulted in an award of 1,359 shares to the reporting person. 1/3 of the shares will vest on July 25, 2027, 1/3 of the shares will vest on July 25, 2028, and 1/3 of the shares will vest on July 25, 2029, pursuant to the grant agreement.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 110 $1,405.71 $154,628.10
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 18

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 151,644

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F19 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,404.25 to $1,406.04. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 117 $1,400.45 $163,852.65
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 17

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 151,754

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F18 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,398.97 to $1,400.85. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 213 $1,396.16 $297,382.08
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 16

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 151,871

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F17 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,393.94 to $1,398.92. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 50 $1,388.19 $69,409.50
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 15

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 152,084

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F16 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,388.18 to $1,388.22. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 410 $1,384.11 $567,485.10
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 14

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 152,134

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F15 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,381.79 to $1,386.22. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 418 $1,378.73 $576,309.14
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 13

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 152,544

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F14 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,376.51 to $1,381.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 472 $1,375.47 $649,221.84
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 12

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 152,962

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F13 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,371.23 to $1,376.20. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 240 $1,369.18 $328,603.20
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 11

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 153,434

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F12 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,366.15 to $1,371.04. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 50 $1,359.36 $67,968.00
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 10

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 153,674

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F11 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,357.88 to $1,362.57. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 5,640 $1,352.95 $7,630,638.00
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 9

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 153,724

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,352.13 to $1,357.03. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 1,506 $1,348.91 $2,031,458.46
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 8

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 159,364

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,347.09 to $1,352.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 1,864 $1,344.16 $2,505,514.24
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 7

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 160,870

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,341.99 to $1,346.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 1,460 $1,339.59 $1,955,801.40
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 6

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 162,734

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,336.97 to $1,341.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 776 $1,334.59 $1,035,641.84
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 5

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 164,194

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,331.95 to $1,336.95. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 464 $1,329.30 $616,795.20
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 4

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 164,970

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,326.94 to $1,331.90. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 409 $1,323.93 $541,487.37
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 3

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 165,434

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,321.72 to $1,326.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 274 $1,318.42 $361,247.08
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 2

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 165,843

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,316.56 to $1,321.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
July 15, 2026 Filed Jul 17, 2026 21:43 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 527 $1,314.03 $692,493.81
Disclosure

SEC source: 0001214659-26-008703 · marketforms-73614.xml · nonDerivative · entry 1

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 166,117

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.

F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,311.45 to $1,316.40 The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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July 01, 2026 Filed Jul 6, 2026 21:51 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 30 $1,351.61 $40,548.30
Disclosure

SEC source: 0001214659-26-008236 · marketforms-73526.xml · nonDerivative · entry 1

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Indirect · Clement Sciammas Trust

Disclosed balance after: 1,149

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.

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June 01, 2026 Filed Jun 3, 2026 21:31 UTC
Sciammas MauriceEVP, WW Sales & Marketing
SaleCommon Stock 30 $1,533.95 $46,018.50
Disclosure

SEC source: 0001214659-26-007138 · marketforms-73342.xml · nonDerivative · entry 1

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: Plan reported

Ownership: Indirect · Clement Sciammas Trust

Disclosed balance after: 1,179

F1 · shares: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.

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May 29, 2026 Filed Jun 2, 2026 22:36 UTC
Sciammas MauriceEVP, WW Sales & Marketing
GiftCommon Stock 12,472 $0.00 $0.00
Disclosure

SEC source: 0001214659-26-007088 · marketforms-73311.xml · nonDerivative · entry 2

Sciammas Maurice · CIK 0001360833 · EVP, WW Sales & Marketing

10b5-1 filing: No plan indicated

Ownership: Indirect · Various Sciammas GRATs

Disclosed balance after: 12,625

F1 · price: The reported transaction involved distributions of securities from the various GRATs, of which the reporting person is a trustee, to individuals who are not immediate family members sharing the same household. No funds were exchanged and no sale of shares occurred in the distributions. Following the completion of the distributions, neither the GRATs nor the reporting person retains any pecuniary interest in the shares.

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May 27, 2026 Filed May 29, 2026 22:43 UTC
Tseng SariaEVP & General Counsel
SaleCommon Stock 7,565 $1,700.00 $12,860,500.00
Disclosure

SEC source: 0001214659-26-006933 · marketforms-73294.xml · nonDerivative · entry 1

Tseng Saria · CIK 0001312593 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 144,218

Read SEC document
May 26, 2026 Filed May 27, 2026 23:28 UTC
Zhou JeffDirector
SaleCommon Stock 486 $1,680.00 $816,480.00
Disclosure

SEC source: 0001214659-26-006804 · marketforms-73276.xml · nonDerivative · entry 1

Zhou Jeff · CIK 0001480772 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,800

Read SEC document
May 26, 2026 Filed May 28, 2026 23:46 UTC
DEAN ROBERT W IIInterim CFO
SaleCommon Stock 22 $1,649.56 $36,290.32
Disclosure

SEC source: 0001214659-26-006861 · marketforms-73221.xml · nonDerivative · entry 1

DEAN ROBERT W II · CIK 0001445300 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,878

F1 · shares: The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.

F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,647.84 to $1,650.16. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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May 22, 2026 Filed May 27, 2026 21:07 UTC
Tseng SariaEVP & General Counsel
SaleCommon Stock 5,000 $1,586.43 $7,932,150.00
Disclosure

SEC source: 0001214659-26-006798 · marketforms-73255.xml · nonDerivative · entry 2

Tseng Saria · CIK 0001312593 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 151,783

Read SEC document
May 22, 2026 Filed May 27, 2026 21:07 UTC
Tseng SariaEVP & General Counsel
GiftCommon Stock 200 $0.00 $0.00
Disclosure

SEC source: 0001214659-26-006798 · marketforms-73255.xml · nonDerivative · entry 1

Tseng Saria · CIK 0001312593 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,783

F1 · price: The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the completion of the transfer, the reporting person no longer retains any pecuniary interest in the shares.

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May 18, 2026 Filed May 20, 2026 22:52 UTC
DEAN ROBERT W IIInterim CFO
SaleCommon Stock 4 $1,563.28 $6,253.12
Disclosure

SEC source: 0001214659-26-006622 · marketforms-72960.xml · nonDerivative · entry 1

DEAN ROBERT W II · CIK 0001445300 · Interim CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,900

F1 · shares: The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.

Read SEC document
May 18, 2026 Filed May 21, 2026 00:10 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 130 $1,521.43 $197,785.90
Disclosure

SEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 13

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 848,263

F14 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,521.33 to $1,521.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 18, 2026 Filed May 21, 2026 00:10 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 352 $1,518.15 $534,388.80
Disclosure

SEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 12

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 848,393

F13 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,516.26 to $1,519.25. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 18, 2026 Filed May 21, 2026 00:10 UTC
Hsing MichaelDirector · CEO
SaleCommon Stock 551 $1,513.11 $833,723.61
Disclosure

SEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 11

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 848,745

F12 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,510.68 to $1,515.44. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.