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MERCK & CO. INC. (MRK)
Institutional ownership, SEC filings and insider activity
Sector: Healthcare & Pharma · SEC CIK 0000310158 · EDGAR filings · Updated 2026-07-01
MERCK & CO. INC. (MRK) has reported institutional ownership of 78.1%, with 3,744 institutional managers holding positions valued at $231.4B per the latest 13F reporting period. The company has 18 bond series in the registry.
Latest updates
- 2026-07-01 — Insider transaction reported (Form 4)
- 2026-07-01 — Insider transaction reported (Form 4)
- 2026-07-01 — Insider transaction reported (Form 4)
- 2026-06-24 — 11-K filed
- 2026-06-24 — 11-K filed
- 2026-06-24 — 11-K filed
- 2026-06-02 — Insider transaction reported (Form 4)
- 2026-06-02 — Insider transaction reported (Form 4)
Institutional ownership overview
According to SEC 13F filings tracked by Sightfile, MERCK & CO. INC. has 3,744 institutional holders and institutional ownership of 78.1%.
| # | Institution | Reported value | % of tracked total |
|---|---|---|---|
| 1 | BlackRock, Inc. | $27.2B | 11.7% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $19.4B | 8.4% |
| 3 | STATE STREET CORP | $14.5B | 6.2% |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | $10.1B | 4.4% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | $8.10B | 3.5% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $7.14B | 3.1% |
| 7 | JPMORGAN CHASE & CO | $6.26B | 2.7% |
| 8 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $5.99B | 2.6% |
| 9 | MORGAN STANLEY | $5.73B | 2.5% |
| 10 | FMR LLC | $5.35B | 2.3% |
Full holder history and quarter-over-quarter changes are available inside the app.
Insider activity
Insiders reported 56 transactions (0 buys, 19 sells) across 25 reporting insiders, with a net reported value of −$42.4M.
Quarterly net insider value, as reported in Form 4 filings.
Debt profile
18 active bond series in the registry, coupons ranging 3.85%–5.85%, maturities through 2065, built from the company's own prospectus filings.
Debt maturity schedule
Principal coming due by year for MERCK & CO. INC., from the company's own SEC prospectus filings (424B) tracked by Sightfile.
| Year | Bond series maturing | Known principal due |
|---|---|---|
| 2027 | 2 | $2.25B |
| 2028 | 3 | $2.50B |
| 2029 | 3 | $2.50B |
| 2030 | 3 | $2.75B |
| 2031 | 3 | $3.50B |
| 2032 | 2 | $2.00B |
| 2033 | 3 | $1.50B |
| 2034 | 1 | — |
| 2035 | 2 | — |
| 2036 | 2 | — |
| 2037 | 1 | — |
| 2039 | 1 | — |
Coupons, seniority and prospectus links for each series are available inside the app.
Fails-to-deliver
The SEC's fails-to-deliver file for 2026-06-30 reports 2,152 failed-to-deliver shares ($556.3K) for MRK — an official data point published by the SEC, shown as reported.
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See full history, cross-references and alerts on SightfileData sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-01.