# MERSANA THERAPEUTICS INC (MRSN)

> Institutional ownership reported to the SEC as of Q1 2026, from Form 13F filings. Source: https://holderbook.com/stocks/MRSN/

- Reporting holders: 1
- Reported value: $87
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [IFP Advisors, Inc](https://holderbook.com/funds/1641866-ifp-advisors-inc/) | $87 | 3 | 0.0% | 3 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q1 2026 | 1 | $87 |
| Q4 2025 | 52 | $66.5M |
| Q3 2025 | 49 | $24.8M |
| Q2 2025 | 84 | $23.0M |
| Q1 2025 | 109 | $30.3M |
| Q4 2024 | 132 | $151.9M |
| Q3 2024 | 115 | $228.2M |
| Q2 2024 | 122 | $236.4M |
| Q1 2024 | 125 | $561.8M |
| Q4 2023 | 106 | $274.8M |
| Q3 2023 | 129 | $146.1M |
| Q2 2023 | 157 | $391.2M |