# Merck & Co., Inc.: Form 13F holdings

An institutional investment manager in RAHWAY, NJ. SEC CIK 310158.

- Quarter ended: 2026-06-30
- Filed: 2026-08-07
- Reported value: $526.4m
- Positions: 13 (13 lines in the filing's table; lines for the same security and option type are added together here)
- Compared with: the 13F for the quarter ended 2026-03-31
- Filing: https://www.sec.gov/Archives/edgar/data/310158/000031015826000210/

## Holdings

As filed, largest first. Reported value is what the manager stated at the quarter end (Jun 30, 2026), in US dollars; it is filing data, not a price. Weight is the share of the total reported value.

| Issuer | Class | Reported value | Weight | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | ---: | --- | --- |
| [PERSONALIS INC (PSNL)](/companies/psnl.md) | COM | $188.2m | 35.8% | 14,044,943 |  | Unchanged |
| [MODERNA INC (MRNA)](/companies/mrna.md) | COM | $161.6m | 30.7% | 2,308,190 |  | Unchanged |
| [KYMERA THERAPEUTICS INC (KYMR)](/companies/kymr.md) | COM | $88.5m | 16.8% | 772,165 |  | Unchanged |
| [AKTIS ONCOLOGY INC (AKTS)](/companies/akts.md) | COM | $30.7m | 5.8% | 952,844 |  | Unchanged |
| [EIKON THERAPEUTICS INC (EIKN)](/companies/eikn.md) | COM | $21.7m | 4.1% | 1,666,666 |  | Unchanged |
| [ENTRADA THERAPEUTICS INC (TRDA)](/companies/trda.md) | COM | $12.8m | 2.4% | 1,739,768 |  | New +1,739,768 |
| [SUTRO BIOPHARMA INC (STRO)](/companies/stro.md) | COM | $9.0m | 1.7% | 272,351 |  | New +272,351 |
| [ALECTOR INC (ALEC)](/companies/alec.md) | COM | $7.1m | 1.4% | 3,545,719 |  | Unchanged |
| [EVAXION BIOTECH A/S (EVAX)](/companies/evax.md) | SPONSORED ADS | $3.8m | 0.7% | 1,214,126 |  | New +1,214,126 |
| [VIRIDIAN THERAPEUTICS INC (VRDN)](/companies/vrdn.md) | COM | $1.7m | 0.3% | 93,414 |  | Unchanged |
| [XILIO THERAPEUTICS INC (XLO)](/companies/xlo.md) | COM | $1.0m | 0.2% | 105,982 |  | Unchanged |
| [TUHURA BIOSCIENCES INC (HURA)](/companies/hura.md) | COM | $45.5k | <0.1% | 19,445 |  | Unchanged |
| [NEUPHORIA THERAPEUTICS INC (NEUP)](/companies/neup.md) | COM | $43.8k | <0.1% | 10,027 |  | Unchanged |

## Sold out

Held at the end of the quarter before and not reported this quarter.

| Issuer | Class | Reported value | Weight | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | ---: | --- | --- |
| CARISMA THERAPEUTICS INC | COM | $0 | 0.0% | 0 |  | Sold out −1,473,240 |
| ENTRADA THERAPEUTICS INC | COM | $0 | 0.0% | 0 |  | Sold out −1,739,768 |
| EVAXION BIOTECH A/S | SPONSORED ADS | $0 | 0.0% | 0 |  | Sold out −1,214,126 |
| SUTRO BIOPHARMA INC | COM | $0 | 0.0% | 0 |  | Sold out −272,351 |

Source: SEC EDGAR, Form 13F-HR, accession 0000310158-26-000210. Last ingested by Listed: Oct 22, 2026, 05:26 ET. No prices; not investment advice.