The S-4 filing is a procedural step towards closing; the early HSR termination is a significant positive for deal certainty. The key remaining risks are: (1) Synaptics stockholder vote (majority of outstanding shares required; abstentions count as 'against'); (2) anti-trust approvals in China, Hungary, Japan, South Korea, and Taiwan; (3) FDI approvals in France and the UK; and (4) the ongoing decline in ON's stock price, which has compressed the implied value for SYNA holders from ~$156 to ~$109 since announcement. Monitor Synaptics court rulings and any competing proposals. The resignation of the SYNA CFO adds management distraction risk.
Price Chart
Executive Summary
ON Semiconductor (ON) filed a preliminary S-4 registration statement in connection with its proposed all-stock acquisition of Synaptics (SYNA). Synaptics stockholders will receive 1.350 shares of ON common stock for each share of SYNA held, implying ~$109.05 per share based on ON's August 4, 2026 closing price of $80.78. The combined company is expected to generate ~$200M in annual run-rate synergies. The filing also discloses that the HSR Act waiting period was granted early termination on August 12, 2026, removing a key closing condition. Synaptics CFO Ken Rizvi resigned effective August 20, 2026.
Key Facts
- All-stock exchange ratio: 1.350 ON shares per SYNA share
- Implied value of ~$109.05/share (ON close $80.78 on Aug 4, 2026; down from ~$156.25 at announcement)
- Up to ~61.4M ON shares registered for issuance; Synaptics holders expected to own ~12% of combined co.
- HSR Act waiting period early terminated on August 12, 2026
- Synaptics CFO Ken Rizvi resigned, effective immediately on August 20, 2026
- Expected ~$200M in annual run-rate cost synergies
- Synaptics board unanimously recommends FOR; special meeting of SYNA holders to be called
Financial Impact
Transaction valued at ~$4.5B based on SYNA reference price of $99.35 on Aug 20, 2026; ~$200M in expected annual run-rate synergies
Risk Factors
- Failure to obtain Synaptics stockholder approval (majority of outstanding shares, not just votes cast; abstentions count AGAINST)
- Regulatory delays or failures in additional jurisdictions (China, Hungary, Japan, South Korea, Taiwan, France, UK)
- Further decline in ON's stock price reducing deal value for SYNA holders (fixed exchange ratio, no collar)
- Synaptics CFO resignation effective Aug 20 adds management uncertainty and potential retention issues
- Competing superior proposal could trigger a $235M termination fee from Synaptics
- Post-merger integration challenges; failure to achieve ~$200M in annual synergies
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 11 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| S-4 Filing (ON) — Batch item 1 | 0001140361-26-033970 |
| Document: ny20076897x1_ex107.htm | 0001140361-26-033970 |
| Document: ny20076897x1_ex5-1.htm | 0001140361-26-033970 |
| Document: ny20076897x1_ex8-1.htm | 0001140361-26-033970 |
| Document: ny20076897x1_ex8-2.htm | 0001140361-26-033970 |
| Document: ny20076897x1_ex99-1.htm | 0001140361-26-033970 |
| Document: ny20076897x1_ex23-4.htm | 0001140361-26-033970 |
| Document: ny20076897x1_ex23-3.htm | 0001140361-26-033970 |
| Document: 0001140361-26-033970-index-headers.html | 0001140361-26-033970 |
| Document: 0001140361-26-033970-index.html | 0001140361-26-033970 |
| Document: 0001140361-26-033970.txt | 0001140361-26-033970 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 21, 2026 6w ago | S-4 | $74.21 $71.72 | ▼ −3.36% | ▼ −4.37% | $83.81 (+12.94%) |
Aug 13, 2026 7w ago | 425 | $81.56 $76.14 | ▼ −6.65% | ▼ −4.90% | $83.81 (+2.76%) |
Aug 13, 2026 7w ago | 8-K | $81.56 $76.14 | ▼ −6.65% | ▼ −4.90% | $83.81 (+2.76%) |
Aug 3, 2026 8w ago | 8-K | $80.78 $72.65 | ▼ −10.06% | ▼ −8.83% | $83.81 (+3.75%) |
Aug 3, 2026 8w ago | Press Release | $80.78 $72.65 | ▼ −10.06% | ▼ −8.83% | $83.81 (+3.75%) |
Jun 30, 2026 13w ago | 425 | $94.54 $89.04 | ▼ −5.82% | ▼ −4.79% | $83.81 (−11.35%) |
Jun 26, 2026 13w ago | 425 | $88.57 $86.81 | ▼ −1.99% | ▼ −1.71% | $83.81 (−5.37%) |
Jun 26, 2026 13w ago | 425 | $88.57 $86.81 | ▼ −1.99% | ▼ −1.71% | $83.81 (−5.37%) |
Jun 26, 2026 13w ago | 425 | $88.57 $86.81 | ▼ −1.99% | ▼ −1.71% | $83.81 (−5.37%) |
Jun 26, 2026 13w ago | 425 | $88.57 $86.81 | ▼ −1.99% | ▼ −1.71% | $83.81 (−5.37%) |
US Market Status
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