Madison Avenue Partners, LP: LAKEFRONT BIOTHERAPEUTICS NV (GLPG): Quarterly 13F Position History
As of Q2 2026, Madison Avenue Partners, LP reported 3,447,807 shares of LAKEFRONT BIOTHERAPEUTICS NV (GLPG), worth $103.4M and representing 4.4% of its 13F equity book. Quarter-over-quarter share count change: + 982,628 (+39.9%) . The position first appeared in Q2 2025 and has been disclosed across 5 13F-HR filings in Pactolio's tracked window.
- 3,447,807Shares Held (Latest Filing)
- $103.4MReported Market Value (Latest Filing)
- 4.4%Portfolio Weight (% of 13F Equity Book)
- +982,628Quarter-over-Quarter Share Change
- +$29.4MQuarter-over-Quarter Value Change
- 3,447,807Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 5 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 3,447,807 | +982,628 | +39.9% | $103.4M | 4.4% | $30.0 |
| Q1 2026 | 2,465,179 | +252,010 | +11.4% | $74.0M | 3.2% | $30.0 |
| Q4 2025 | 2,213,169 | +17,394 | +0.8% | $72.4M | 3.1% | $32.7 |
| Q3 2025 | 2,195,775 | +318,764 | +17.0% | $76.1M | 4.5% | $34.6 |
| Q2 2025 | 1,877,011 | – | – | $52.5M | 3.5% | $28.0 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares, a quarter-end mark rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did Madison Avenue Partners, LP first disclose a GLPG position in 13F-HR filings?
Madison Avenue Partners, LP first reported LAKEFRONT BIOTHERAPEUTICS NV (GLPG) on its 13F-HR filing for the period ending 2025-06-30 (Q2 2025). The position has appeared on 5 reported quarters within Pactolio's tracked window.
What was Madison Avenue Partners, LP's most recent quarter-over-quarter share-count change in GLPG?
Between Q1 2026 and Q2 2026, Madison Avenue Partners, LP added 982,628 shares of GLPG (+39.9%), bringing the total reported position to 3,447,807 shares at a market value of $103.4M.
Does the implied price-per-share represent Madison Avenue Partners, LP's cost basis in GLPG?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.