As of November 8, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of SiTime Corp. The largest reported stake is Fmr LLC's, at 15%. 11 filings are on record since August 6, 2025 (Schedule 13G/A, May 6, 2026).
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Key facts
- · Reporting person: Vanguard Portfolio Management · Sole voting: 6,756 · Shared voting: 0 · Sole dispositive: 1,218,908 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-07-31
- · Reporting person: BlackRock, Inc. · Sole voting: 2,127,879 · Shared voting: 0 · Sole dispositive: 2,191,227 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-07-30
- · Reporting person: Renesas Electronics America Inc. · Sole voting: 0 · Shared voting: 3,558,691 · Sole dispositive: 0 · Shared dispositive: 3,558,691 · SCHEDULE 13D, 2026-07-09
- · Holder: Fmr LLC · Percent: 15% · SCHEDULE 13G/A
- · Holder: Vanguard Portfolio Management · Percent: 5.37% · SCHEDULE 13G
SiTime Corp has 11 Schedule 13D or 13G filings on record since 2025-08-06. 4 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Fmr LLC | 15% | 3,944,936 | SCHEDULE 13G/A, 2026-05-06 | 2026-03-31 |
| Megachips Corp | 13.1% | 3,420,000 | SCHEDULE 13G/A, 2026-01-30 | 2025-12-31 |
| Renesas Electronics America Inc. | 11.9% | 3,558,691 | SCHEDULE 13D, 2026-07-09 | 2026-07-01 |
| BlackRock, Inc. | 8.3% | 2,191,227 | SCHEDULE 13G/A, 2026-07-30 | 2026-06-30 |
| Vanguard Portfolio Management | 4.61% | 1,218,908 | SCHEDULE 13G/A, 2026-07-31 | 2026-06-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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Keep reading
More on SiTime Corp and the records around it.
SiTime Corp elsewhere on the record
- Acquisition Jul 2026
- Who owns it
Companies that share a holder
- Renesas Electronics America Inc. also filed stake reports on 1 other company: Wolfspeed, Inc. (May 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), A10 Networks Inc (Oct 2026), ADT Inc (Oct 2026)
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What the Full Report on SiTime Corp covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Renesas Electronics America Inc. | 0 | 3,558,691 | 0 | 3,558,691 | SCHEDULE 13D, 2026-07-09 |
| Renesas Electronics Corporation | 0 | 3,558,691 | 0 | 3,558,691 | SCHEDULE 13D, 2026-07-09 |
| BlackRock, Inc. | 2,127,879 | 0 | 2,191,227 | 0 | SCHEDULE 13G/A, 2026-07-30 |
| Vanguard Portfolio Management | 6,756 | 0 | 1,218,908 | 0 | SCHEDULE 13G/A, 2026-07-31 |
The latest filing identifies SiTime Corp by CUSIP 82982T106 and gives its principal executive office as 5451 Patrick Henry Drive, Santa Clara, CA 95054 (SCHEDULE 13G/A, 2026-07-31).
Source of funds (Item 3)
On February 4, 2026, SiTime Corporation, a Delaware corporation ("SiTime" or the "Issuer"), entered into an Asset Purchase Agreement (the "Asset Purchase Agreement") with Renesas America, pursuant to which Renesas America agreed to, and agreed to cause certain of its affiliates to, sell, transfer, assign, and convey to SiTime all of their right, title, and interest in, to, and under certain assets related to the timing business of Renesas Electronics Corporation (the "Acquisition").Renesas Electronics America Inc., SCHEDULE 13D, 2026-07-09
Purpose of Transaction (Item 4)
Renesas Electronics America Inc.
The responses to Item 3 and Item 6 of this Schedule 13D are incorporated herein by reference. The Reporting Persons acquired the securities reported herein for investment purposes. The Reporting Persons, either directly or indirectly through the Renesas CEO Director (defined in Item 6 below), may engage in discussions from time to time with the Issuer's board of directors (the "Board"), the Issuer's management, the Issuer's other stockholders, advisors, and/or other persons regarding the Issuer, including but not limited to its operations, governance, and control. The Reporting Persons expect to review from time to time their investment in the Issuer and may, depending on the market and other conditions and subject to applicable law, (i) acquire beneficial ownership of additional Shares in the open market, in privately negotiated transactions, or otherwise, (ii) dispose of all or a part of their holdings of securities of the Issuer, or (iii) take other actions which could involve one or more of the types of transactions or have one or more of the results described in paragraphs (a) through (j), inclusive, of the instructions to Item 4 of Schedule 13D. Except as set forth herein, the Reporting Persons do not have any plans or proposals which relate to, or could result in, any of the matters referred to in paragraphs (a) through (j), inclusive, of the instructions to Item 4 of Schedule 13D. The Reporting Persons may, at any time and from time to time, review or reconsider …The first part of Item 4 of the SCHEDULE 13D filed 2026-07-09; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-06 | Fmr LLC | 13.5% | SCHEDULE 13G/A |
| 2025-11-05 | Fmr LLC | 11.1% | SCHEDULE 13G/A |
| 2026-01-30 | Megachips Corp | 13.1% | SCHEDULE 13G/A |
| 2026-02-05 | Fmr LLC | 12.8% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-24 | BlackRock, Inc. | 10.1% | SCHEDULE 13G/A |
| 2026-04-29 | Vanguard Portfolio Management | 5.37% | SCHEDULE 13G |
| 2026-05-06 | Fmr LLC | 15% | SCHEDULE 13G/A |
| 2026-07-09 | Renesas Electronics America Inc. | 11.9% | SCHEDULE 13D |
| 2026-07-30 | BlackRock, Inc. | 8.3% | SCHEDULE 13G/A |
| 2026-07-31 | Vanguard Portfolio Management | 4.61% | SCHEDULE 13G/A |
Questions about who owns SiTime Corp
Who owns SiTime Corp?
On this page, 4 holders' latest ownership filings report 5% or more of SiTime Corp: Fmr LLC (15%, Schedule 13G/A, filed 2026-05-06), Megachips Corp (13.1%, Schedule 13G/A, filed 2026-01-30), Renesas Electronics America Inc. (11.9%, Schedule 13D, filed 2026-07-09) and BlackRock, Inc. (8.3%, Schedule 13G/A, filed 2026-07-30).
Who are the largest shareholders of SiTime Corp?
By the share each holder's latest filing reports, the largest holders of SiTime Corp on this page are Fmr LLC (15%), Megachips Corp (13.1%) and Renesas Electronics America Inc. (11.9%).
When did Fmr LLC buy into SiTime Corp?
The filings give report dates, not purchase dates. The earliest filing from Fmr LLC on this page is the Schedule 13G/A, filed 2025-08-06, reporting 13.5%; its latest, Schedule 13G/A filed 2026-05-06, reports 15%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 11 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for SiTime Corp
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 23, 2026 | Leadership change: Katherine E. Schuelke departs, Director | — | Leadership changes | Source |
| July 1, 2026 | Acquired Renesas Electronics Corporation | $1.50B | Acquisition | Source |
| July 1, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.