No trading action warranted — Masimo is now delisted and privately held by Danaher. Existing MASI shareholders received the merger consideration at closing; the deregistration filing is a formality. Monitor Danaher (DHR) for any post-merger integration updates.
Price Chart
Executive Summary
Masimo Corporation filed Form 15-12G to terminate its SEC registration under Section 12(g), following its acquisition by Danaher Corporation which closed on June 10, 2026. The company has only 1 holder of record post-merger, making deregistration a routine procedural step after the going-private transaction. This filing is a routine post-merger administrative action with no independent trading signal.
Key Facts
- Masimo filed Form 15-12G to terminate SEC registration under Section 12(g) on June 22, 2026, effective same day.
- Danaher Corporation completed its acquisition of Masimo on June 10, 2026 via a merger, making Masimo a wholly owned subsidiary of Danaher.
- Post-merger, there is only 1 holder of record of Masimo common stock.
- The filing suspends Masimo's duty to file reports under Sections 13 and 15(d) of the Exchange Act; reporting obligations shift to Danaher.
Financial Impact
Not applicable — this is a post-merger deregistration; no financial impact remains for Masimo as a public entity.
Risk Factors
- No further public filings or liquidity for Masimo shares — former shareholders cannot trade post-merger.
- Any residual litigation or indemnification claims remain with the private entity, not publicly disclosed going forward.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 4 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 15-12G Filing (Primary) | 0001104659-26-076448 |
| Document: 0001104659-26-076448-index-headers.html | 0001104659-26-076448 |
| Document: 0001104659-26-076448-index.html | 0001104659-26-076448 |
| Document: 0001104659-26-076448.txt | 0001104659-26-076448 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Jun 22, 2026 14w ago | 15-12G | — | awaiting T+5 | — | — |
Jun 10, 2026 16w ago | 8-K | $179.95 $179.95 | · 0.00% | ▼ −2.14% | — |
May 4, 2026 21w ago | 8-K | $177.90 $178.08 | ▲ +0.10% | ▼ −2.83% | — |
Apr 21, 2026 23w ago | Court Ruling | $178.21 $178.10 | ▲ +0.06% | ▲ +1.15% | — |
Apr 1, 2026 26w ago | DEFM14A | $177.95 $177.88 | ▼ −0.04% | ▼ −3.80% | — |
Mar 18, 2026 28w ago | PREM14A | $178.51 $176.87 | ▼ −0.92% | ▲ +1.29% | — |
Feb 27, 2026 30w ago | DFAN14A | $175.27 $175.42 | ▲ +0.09% | ▲ +1.29% | — |
Jan 23, 2026 36w ago | Court Ruling | $140.64 $137.02 | ▼ −2.57% | ▼ −2.96% | — |
Jan 23, 2026 36w ago | Court Ruling | $140.64 $137.02 | ▼ −2.57% | ▼ −2.96% | — |
US Market Status
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