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MTSI SEC Filing News — MACOM Technology Solutions Holdings, Inc.

Latest SEC filings for MACOM Technology Solutions Holdings, Inc. (MTSI) explained in plain English: insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). Sourced directly from SEC EDGAR.

What you’re looking at: Each item below is parsed from an actual SEC filing. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.
Form 144 Large Proposed Insider Sale 2026-05-29

MTSI Form 144 filed for proposed insider sale by STEPHEN DALY (15,828 shares) ~$12.38M

STEPHEN DALY filed a Form 144 with the SEC indicating intent to sell MTSI (MACOM Technology Solutions Holdings, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: STEPHEN DALY Shares: 15,828 Est. Value: $12.38M
Form 144 Large Proposed Insider Sale 2026-05-26

MTSI Form 144 filed for proposed insider sale by OCAMPO SUSAN (190,787 shares) ~$156.52M

OCAMPO SUSAN filed a Form 144 with the SEC indicating intent to sell MTSI (MACOM Technology Solutions Holdings, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: OCAMPO SUSAN Shares: 190,787 Est. Value: $156.52M
Form 4 Tax / Compensation Filing 2026-05-21

MTSI insider Form 4 filed for equity award, exercise, or tax withholding

Shanmugaraj Murugesan (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Shanmugaraj Murugesan (Director) Shares: 1,400
Form 4 Tax / Compensation Filing 2026-05-20

MTSI insider Form 4 filed for equity award, exercise, or tax withholding

Dennehy Robert (Senior VP and COO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Dennehy Robert (Senior VP and COO) Shares: 146
Form 4 Insider Selling 2026-05-20

MTSI insider Kober John (Senior VP and CFO) sold 7,644 shares (~$2.75M)

Kober John, listed as Senior VP and CFO at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 7,644 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Kober John (Senior VP and CFO) Shares: 7,644 Est. Value: $2.75M
Form 4 Insider Selling 2026-05-20

MTSI insider Hwang Donghyun Thomas (SVP, Global Sales) sold 2,595 shares (~$935.9K)

Hwang Donghyun Thomas, listed as SVP, Global Sales at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 2,595 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Hwang Donghyun Thomas (SVP, Global Sales) Shares: 2,595 Est. Value: $935.9K
Form 4 Tax / Compensation Filing 2026-05-20

MTSI insider Form 4 filed for equity award, exercise, or tax withholding

BLAND CHARLES R (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: BLAND CHARLES R (Director) Shares: 700
Form 144 Large Proposed Insider Sale 2026-05-18

MTSI Form 144 filed for proposed insider sale by John F. Kober Ill (15,033 shares) ~$11.29M

John F. Kober Ill filed a Form 144 with the SEC indicating intent to sell MTSI (MACOM Technology Solutions Holdings, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: John F. Kober Ill Shares: 15,033 Est. Value: $11.29M
Form 4 Insider Selling 2026-05-18

MTSI insider CHUNG PETER Y (Director) sold 43,268 shares (~$16.36M)

CHUNG PETER Y, listed as Director at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 43,268 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: CHUNG PETER Y (Director) Shares: 43,268 Est. Value: $16.36M
Form 4 Insider Selling 2026-05-15

MTSI insider BLAND CHARLES R (Director) sold 800 shares (~$304.0K)

BLAND CHARLES R, listed as Director at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 800 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: BLAND CHARLES R (Director) Shares: 800 Est. Value: $304.0K
Form 144 Large Proposed Insider Sale 2026-05-14

MTSI Form 144 filed for proposed insider sale by PETER CHUNG (43,268 shares) ~$32.73M

PETER CHUNG filed a Form 144 with the SEC indicating intent to sell MTSI (MACOM Technology Solutions Holdings, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: PETER CHUNG Shares: 43,268 Est. Value: $32.73M
Form 144 Large Proposed Insider Sale 2026-05-13

MTSI Form 144 filed for proposed insider sale by OCAMPO SUSAN (100,000 shares) ~$76.03M

OCAMPO SUSAN filed a Form 144 with the SEC indicating intent to sell MTSI (MACOM Technology Solutions Holdings, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: OCAMPO SUSAN Shares: 100,000 Est. Value: $76.03M
Form 4 Insider Selling 2026-05-13

MTSI insider RIBAR GEOFFREY G (Director) sold 1,623 shares (~$587.3K)

RIBAR GEOFFREY G, listed as Director at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 1,623 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: RIBAR GEOFFREY G (Director) Shares: 1,623 Est. Value: $587.3K
Form 144 Proposed Insider Sale 2026-05-12

MTSI Form 144 filed for proposed insider sale by Charles Bland (800 shares) ~$573.5K

Charles Bland filed a Form 144 with the SEC indicating intent to sell MTSI (MACOM Technology Solutions Holdings, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Charles Bland Shares: 800 Est. Value: $573.5K
Form 144 Large Proposed Insider Sale 2026-05-11

MTSI Form 144 filed for proposed insider sale by OCAMPO SUSAN (200,000 shares) ~$144.38M

OCAMPO SUSAN filed a Form 144 with the SEC indicating intent to sell MTSI (MACOM Technology Solutions Holdings, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: OCAMPO SUSAN Shares: 200,000 Est. Value: $144.38M
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