Genmab A/S
CIK 1434265 · View on SEC EDGAR ↗
Activist
First SEC filing: Dec. 30, 2025 · Latest: Dec. 30, 2025
On this page
Insider at
Insider transactions
11 buys (P)
0 sells (S)
Net:
$7,593,976,255
Avg return of open purchases vs now:
-65.4%
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 29, 2025 | GMAB | P | 75,867,199 | $97.00 | $7,359,118,303 | 0 Indirect | -100.00% | Disposed | -65.4% (price as of 2026-08-19) |
| Dec. 29, 2025 | GMAB | P | 1,052,806 | $97.00 | $102,122,182 | 73,884,293 Indirect | +1.45% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 26, 2025 | GMAB | P | 2,978 | $97.00 | $288,866 | 72,831,487 Indirect | 0.00% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 26, 2025 | GMAB | P | 142,610 | $97.00 | $13,833,170 | 72,828,509 Indirect | +0.20% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 24, 2025 | GMAB | P | 96,082 | $97.00 | $9,319,954 | 72,685,899 Indirect | +0.13% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 23, 2025 | GMAB | P | 561,042 | $97.00 | $54,421,074 | 72,589,817 Indirect | +0.78% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 22, 2025 | GMAB | P | 15,710 | $97.00 | $1,523,870 | 72,028,775 Indirect | +0.02% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 19, 2025 | GMAB | P | 66,264 | $97.00 | $6,427,608 | 72,013,065 Indirect | +0.09% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 18, 2025 | GMAB | P | 212,177 | $97.00 | $20,581,169 | 71,946,801 Indirect | +0.30% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 17, 2025 | GMAB | P | 150,795 | $97.00 | $14,627,115 | 71,734,624 Indirect | +0.21% | Acquired | -65.4% (price as of 2026-08-19) |
| Dec. 16, 2025 | GMAB | P | 120,752 | $97.00 | $11,712,944 | 71,583,829 Indirect | +0.17% | Acquired | -65.4% (price as of 2026-08-19) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Dec. 18, 2025 | GMAB | Common Shares, nominal value EUR 0.09 per share | 71,463,077 | Indirect |