# Merck & Co. (MRK): value investors who own it | moatshark

10 value investors held Merck & Co. in their Q3 2026 13F, led by Smead Capital Management, Kahn Brothers, Harris Associates (Oakmark), Fairfax Financial…

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Smead Capital Management | 7.1% | $335m | Trimmed -1.2% | 49 |
| Kahn Brothers | 4.4% | $28.0m | Trimmed -4.0% | 18 |
| Harris Associates (Oakmark) | 2.1% | $1.6bn | Trimmed -2.4% | 8 |
| Fairfax Financial Holdings | 0.8% | $22.2m | Unchanged | 23 |
| Semper Augustus | 0.7% | $5.7m | Unchanged | 53 |
| Mairs & Power | 0.1% | $6.6m | Added +2.3% | 53 |
| Horizon Kinetics | 0.0% | $3.6m | Trimmed -0.8% | 30 |
| Matrix Asset Advisors | 0.0% | $236k | Trimmed -3.0% | 54 |
| Dodge & Cox | 0.0% | $17.4m | Trimmed -0.2% | 53 |
| Gardner Russo & Quinn | 0.0% | $211k | Trimmed -23% | 2 |

## Directors buying and selling (Form 4, last 12 months)

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-08-13 | Guindo Chirfi | EVP, Access, Policy & Comms | Sold | 10000 | $1.4m |
| 2026-08-12 | Zachary Jennifer | EVP, General Counsel | Sold | 80315 | $10.7m |
| 2026-08-12 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sold | 11099 | $1.5m |
| 2026-08-12 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sold | 600 | $79k |
| 2026-08-11 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sold | 7410 | $973k |
| 2026-08-11 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sold | 5427 | $718k |
| 2026-08-10 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sold | 20784 | $2.7m |
| 2026-08-06 | Guindo Chirfi | EVP, Access, Policy & Comms | Sold | 15000 | $2.0m |
| 2026-08-06 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sold | 4945 | $644k |
| 2026-08-06 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sold | 805 | $105k |
| 2026-08-06 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sold | 300 | $39k |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | Sold | 34705 | $4.5m |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | Sold | 13542 | $1.7m |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | Sold | 9709 | $1.2m |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | Sold | 6311 | $812k |
| 2026-08-05 | Williams David Michael | EVP,Chief Info&Digital Officer | Sold | 4600 | $592k |
| 2026-08-05 | Maraldo David R. | EVP & Pres. MMD | Sold | 2686 | $346k |

## Fund holders

| Fund | Manager | Weight | Value | As at |
| --- | --- | --- | --- | --- |
| Smead Value Fund | Smead Capital Management | 5.9% | $230m | 2026-05-29 |

Source: SEC filings, via moatshark (https://www.moatshark.com/s/mrk). Values traded and returns are estimates. Not investment advice. Built 2026-10-21.