Dong Hyun Hwang
CIK 1480330 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 23, 2015 · Latest: Jan. 23, 2015
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
54 sells (S)
Net:
$-5,584,733
+ 22 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
22 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 25, 2026 | MTSI | S 10b5-1 | 420 | $382.04 | $160,457 | 31,456 Direct | -1.32% | Disposed | -29.4% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 100 | $391.94 | $39,194 | 29,756 Direct | -0.33% | Disposed | -31.1% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 291 | $389.74 | $113,414 | 29,856 Direct | -0.97% | Disposed | -30.8% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 400 | $388.65 | $155,460 | 30,147 Direct | -1.31% | Disposed | -30.6% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 200 | $387.25 | $77,450 | 30,547 Direct | -0.65% | Disposed | -30.3% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 400 | $386.62 | $154,648 | 30,747 Direct | -1.28% | Disposed | -30.2% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 9 | $384.35 | $3,459 | 31,147 Direct | -0.03% | Disposed | -29.8% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 300 | $382.91 | $114,873 | 31,156 Direct | -0.95% | Disposed | -29.5% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 100 | $379.80 | $37,980 | 31,876 Direct | -0.31% | Disposed | -28.9% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 200 | $375.34 | $75,068 | 31,976 Direct | -0.62% | Disposed | -28.1% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 100 | $369.99 | $36,999 | 32,176 Direct | -0.31% | Disposed | -27.1% (price as of 2026-08-21) |
| June 25, 2026 | MTSI | S 10b5-1 | 100 | $367.30 | $36,730 | 32,276 Direct | -0.31% | Disposed | -26.5% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 95 | $381.23 | $36,217 | 32,376 Direct | -0.29% | Disposed | -29.2% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 100 | $377.70 | $37,770 | 32,471 Direct | -0.31% | Disposed | -28.5% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 100 | $369.06 | $36,906 | 32,571 Direct | -0.31% | Disposed | -26.9% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 200 | $367.50 | $73,500 | 32,671 Direct | -0.61% | Disposed | -26.6% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 100 | $364.93 | $36,493 | 32,871 Direct | -0.30% | Disposed | -26.0% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 100 | $362.89 | $36,289 | 32,971 Direct | -0.30% | Disposed | -25.6% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 500 | $360.38 | $180,190 | 33,071 Direct | -1.49% | Disposed | -25.1% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 300 | $358.84 | $107,652 | 33,571 Direct | -0.89% | Disposed | -24.8% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 500 | $356.68 | $178,340 | 33,871 Direct | -1.45% | Disposed | -24.3% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 300 | $355.06 | $106,518 | 34,371 Direct | -0.87% | Disposed | -24.0% (price as of 2026-08-21) |
| May 18, 2026 | MTSI | S 10b5-1 | 300 | $353.32 | $105,996 | 34,671 Direct | -0.86% | Disposed | -23.6% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 65 | $281.59 | $18,303 | 34,886 Direct | -0.19% | Disposed | -4.2% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 200 | $280.88 | $56,176 | 34,951 Direct | -0.57% | Disposed | -3.9% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 635 | $279.75 | $177,641 | 35,151 Direct | -1.77% | Disposed | -3.5% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 700 | $278.42 | $194,894 | 35,786 Direct | -1.92% | Disposed | -3.1% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 200 | $276.81 | $55,362 | 36,486 Direct | -0.55% | Disposed | -2.5% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 100 | $275.73 | $27,573 | 36,686 Direct | -0.27% | Disposed | -2.1% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 1,518 | $274.79 | $417,131 | 36,786 Direct | -3.96% | Disposed | -1.8% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 200 | $273.48 | $54,696 | 38,304 Direct | -0.52% | Disposed | -1.3% (price as of 2026-08-21) |
| April 30, 2026 | MTSI | S 10b5-1 | 100 | $271.40 | $27,140 | 38,504 Direct | -0.26% | Disposed | -0.6% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 200 | $235.81 | $47,162 | 38,604 Direct | -0.52% | Disposed | 14.4% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 300 | $234.83 | $70,449 | 38,804 Direct | -0.77% | Disposed | 14.9% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 500 | $232.68 | $116,340 | 39,104 Direct | -1.26% | Disposed | 16.0% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 600 | $231.45 | $138,870 | 39,604 Direct | -1.49% | Disposed | 16.6% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 300 | $230.20 | $69,060 | 40,204 Direct | -0.74% | Disposed | 17.2% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 359 | $228.70 | $82,103 | 40,504 Direct | -0.88% | Disposed | 18.0% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 800 | $227.92 | $182,336 | 40,863 Direct | -1.92% | Disposed | 18.4% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 400 | $226.58 | $90,632 | 41,663 Direct | -0.95% | Disposed | 19.1% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 100 | $225.01 | $22,501 | 42,063 Direct | -0.24% | Disposed | 19.9% (price as of 2026-08-21) |
| Feb. 2, 2026 | MTSI | S 10b5-1 | 1,715 | $217.38 | $372,807 | 42,163 Direct | -3.91% | Disposed | 24.1% (price as of 2026-08-21) |
| Dec. 4, 2025 | MTSI | S 10b5-1 | 100 | $189.36 | $18,936 | 43,878 Direct | -0.23% | Disposed | 42.5% (price as of 2026-08-21) |
| Dec. 4, 2025 | MTSI | S 10b5-1 | 300 | $188.62 | $56,586 | 43,978 Direct | -0.68% | Disposed | 43.1% (price as of 2026-08-21) |
| Dec. 4, 2025 | MTSI | S 10b5-1 | 880 | $187.60 | $165,088 | 44,278 Direct | -1.95% | Disposed | 43.9% (price as of 2026-08-21) |
| Dec. 4, 2025 | MTSI | S 10b5-1 | 875 | $186.76 | $163,415 | 45,158 Direct | -1.90% | Disposed | 44.5% (price as of 2026-08-21) |
| Dec. 4, 2025 | MTSI | S 10b5-1 | 400 | $185.35 | $74,140 | 46,033 Direct | -0.86% | Disposed | 45.6% (price as of 2026-08-21) |
| Dec. 4, 2025 | MTSI | S 10b5-1 | 200 | $184.24 | $36,848 | 46,433 Direct | -0.43% | Disposed | 46.5% (price as of 2026-08-21) |
| Dec. 4, 2025 | MTSI | S 10b5-1 | 1,617 | $183.40 | $296,558 | 46,633 Direct | -3.35% | Disposed | 47.1% (price as of 2026-08-21) |
| Nov. 19, 2025 | MTSI | S 10b5-1 | 304 | $163.64 | $49,747 | 49,750 Direct | -0.61% | Disposed | 64.9% (price as of 2026-08-21) |
| Nov. 19, 2025 | MTSI | S 10b5-1 | 596 | $162.38 | $96,778 | 50,054 Direct | -1.18% | Disposed | 66.2% (price as of 2026-08-21) |
| Nov. 19, 2025 | MTSI | S 10b5-1 | 1,177 | $161.38 | $189,944 | 50,650 Direct | -2.27% | Disposed | 67.2% (price as of 2026-08-21) |
| Nov. 19, 2025 | MTSI | S 10b5-1 | 1,421 | $160.35 | $227,857 | 51,827 Direct | -2.67% | Disposed | 68.3% (price as of 2026-08-21) |
| Nov. 19, 2025 | MTSI | S 10b5-1 | 291 | $158.27 | $46,057 | 53,248 Direct | -0.54% | Disposed | 70.5% (price as of 2026-08-21) |
| July 22, 2025 | MTSI | S 10b5-1 | 937 | $139.89 | $131,077 | 30,779 Direct | -2.95% | Disposed | 92.9% (price as of 2026-08-21) |
| July 22, 2025 | MTSI | S 10b5-1 | 575 | $138.73 | $79,770 | 31,716 Direct | -1.78% | Disposed | 94.5% (price as of 2026-08-21) |
| July 22, 2025 | MTSI | S 10b5-1 | 157 | $137.41 | $21,573 | 32,291 Direct | -0.48% | Disposed | 96.4% (price as of 2026-08-21) |
| July 22, 2025 | MTSI | S 10b5-1 | 2,231 | $136.78 | $305,156 | 32,448 Direct | -6.43% | Disposed | 97.3% (price as of 2026-08-21) |
| July 22, 2025 | MTSI | S 10b5-1 | 1,100 | $135.85 | $149,435 | 34,679 Direct | -3.07% | Disposed | 98.7% (price as of 2026-08-21) |
| May 8, 2025 | MTSI | S 10b5-1 | 2,528 | $119.26 | $301,489 | 30,659 Direct | -7.62% | Disposed | 126.3% (price as of 2026-08-21) |
| May 8, 2025 | MTSI | S 10b5-1 | 2,416 | $117.89 | $284,822 | 33,187 Direct | -6.79% | Disposed | 128.9% (price as of 2026-08-21) |
| April 30, 2025 | MTSI | S 10b5-1 | 6,471 | $100.00 | $647,100 | 35,603 Direct | -15.38% | Disposed | 169.9% (price as of 2026-08-21) |
| March 3, 2025 | MTSI | S 10b5-1 | 1,583 | $116.61 | $184,594 | 42,074 Direct | -3.63% | Disposed | 131.4% (price as of 2026-08-21) |
| Jan. 27, 2025 | MTSI | S 10b5-1 | 7,355 | $133.00 | $978,215 | 43,657 Direct | -14.42% | Disposed | 102.9% (price as of 2026-08-21) |
| Nov. 6, 2024 | MTSI | S 10b5-1 | 1,500 | $118.38 | $177,570 | 37,102 Direct | -3.89% | Disposed | 128.0% (price as of 2026-08-21) |
| Sept. 3, 2024 | MTSI | S 10b5-1 | 900 | $105.11 | $94,599 | 38,085 Direct | -2.31% | Disposed | 156.8% (price as of 2026-08-21) |
| Sept. 3, 2024 | MTSI | S 10b5-1 | 937 | $106.56 | $99,847 | 37,148 Direct | -2.46% | Disposed | 153.3% (price as of 2026-08-21) |
| Sept. 3, 2024 | MTSI | S 10b5-1 | 1,110 | $104.21 | $115,673 | 38,985 Direct | -2.77% | Disposed | 159.0% (price as of 2026-08-21) |
| Sept. 3, 2024 | MTSI | S 10b5-1 | 1,428 | $103.21 | $147,384 | 40,095 Direct | -3.44% | Disposed | 161.5% (price as of 2026-08-21) |
| July 22, 2024 | MTSI | S 10b5-1 | 300 | $108.17 | $32,451 | 41,523 Direct | -0.72% | Disposed | 149.5% (price as of 2026-08-21) |
| July 22, 2024 | MTSI | S 10b5-1 | 1,236 | $107.41 | $132,759 | 41,823 Direct | -2.87% | Disposed | 151.3% (price as of 2026-08-21) |
| July 22, 2024 | MTSI | S 10b5-1 | 1,349 | $106.18 | $143,237 | 43,059 Direct | -3.04% | Disposed | 154.2% (price as of 2026-08-21) |
| July 22, 2024 | MTSI | S 10b5-1 | 2,115 | $105.34 | $222,794 | 44,408 Direct | -4.55% | Disposed | 156.2% (price as of 2026-08-21) |
| May 8, 2024 | MTSI | S 10b5-1 | 5,415 | $102.84 | $556,879 | 41,325 Direct | -11.59% | Disposed | 162.4% (price as of 2026-08-21) |
| May 8, 2024 | MTSI | S 10b5-1 | 1,585 | $102.01 | $161,686 | 46,740 Direct | -3.28% | Disposed | 164.6% (price as of 2026-08-21) |
| March 11, 2024 | MTSI | S 10b5-1 | 2,991 | $92.79 | $277,535 | 48,325 Direct | -5.83% | Disposed | 190.8% (price as of 2026-08-21) |
| March 11, 2024 | MTSI | S 10b5-1 | 6,406 | $91.99 | $589,288 | 51,316 Direct | -11.10% | Disposed | 193.4% (price as of 2026-08-21) |
| Jan. 29, 2024 | MTSI | S 10b5-1 | 200 | $88.27 | $17,654 | 57,722 Direct | -0.35% | Disposed | 205.7% (price as of 2026-08-21) |
Showing latest 100 of 211 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| July 22, 2025 | MTSI | Stock Option (Right to Buy) | Common Stock (5,000) | $16.06 | Nov. 6, 2025 | 5,000 | Disposed |
| July 22, 2024 | MTSI | Stock Option (Right to Buy) | Common Stock (5,000) | $16.06 | Nov. 6, 2025 | 5,000 | Disposed |
| Nov. 28, 2023 | MTSI | Stock Option (Right to Buy) | Common Stock (5,000) | $16.06 | Nov. 6, 2025 | 5,000 | Disposed |
| Feb. 16, 2021 | MTSI | Stock Option (Right to Buy) | Common Stock (15,000) | $16.06 | Nov. 6, 2025 | 15,000 | Acquired |
| Nov. 19, 2018 | MTSI | Stock Option (Right to Buy) | Common Stock (10,000) | $34.46 | April 22, 2022 | 10,000 | Disposed |
| Nov. 9, 2017 | MTSI | Stock Option (Right to Buy) | Common Stock (15,000) | $36.56 | Nov. 8, 2024 | 15,000 | Acquired |
| April 19, 2017 | MTSI | Stock Option (Right to Buy) | Common Stock | $34.46 | April 22, 2022 | 10,000 | Acquired |
| Nov. 9, 2016 | MTSI | Stock Option (Right to Buy) | Common Stock (15,000) | $40.25 | Nov. 8, 2023 | 15,000 | Acquired |
| Nov. 13, 2015 | MTSI | Employee Stock Option (Right to Buy) | Common Stock (15,000) | $32.10 | Nov. 12, 2022 | 15,000 | Acquired |
| April 22, 2015 | MTSI | Employee Stock Option (Right to Buy) | Common Stock (10,000) | $34.46 | April 22, 2022 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 23, 2015 | MTSI | Common Stock | 51,280 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $450,000 | — | $2,066,678 | — | $349,750 | — | $10,272 | $2,876,700 |
| 2024 | $430,000 | — | $1,623,328 | — | $5,160 | — | $23,030 | $2,081,518 |
| 2023 | $414,000 | — | $1,773,209 | — | $31,878 | — | $12,571 | $2,231,658 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.