Genmab A/S ADR (GMAB): Congress and insider trades
Who in Congress and inside the company traded GMAB, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Genmab A/S ADR (GMAB) is a listed stock on NASDAQ.
- 4 members of Congress filed 5 buys and 3 sells of GMAB, the latest published 2026-07-21 (21 July 2026).
- Across 3 scored buys, Congress averaged -10.9% against the S&P 500 (SPY) over the 90 days after disclosure, with 33% of them ahead of the index. That result is too few trades to draw a conclusion.
- Data as of 2026-09-29 (29 September 2026).
Congress trades in GMAB
as of 2026-07-21| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 21 Jul 2026 | Alan Armstrong (R-OK) | buy | 1K–15K | 113 | n/a |
| 13 Nov 2023 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 26 | -27.2% |
| 16 Oct 2023 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 30 | n/a |
| 24 Aug 2023 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 32 | -19.5% |
| 24 Aug 2023 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 33 | -19.5% |
| 14 Aug 2023 | Daniel S. Goldman (D-NY) | sell | 50K–100K | 34 | n/a |
| 17 Apr 2023 | Daniel S. Goldman (D-NY) | sell | 1K–15K | 17 | n/a |
| 18 May 2021 | Tom Carper (D-DE) | buy | 1K–15K | 178 | +13.9% |
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Related pages
Frequently asked questions
Who has bought GMAB?
5 Congress buys by 4 members and 0 insider buys are on file. The tables on this page list every one.
Did buying GMAB after a disclosure beat the market?
Across 3 scored buys, Congress averaged -10.9% against the S&P 500 (SPY) over the 90 days after disclosure, with 33% of them ahead of the index. That result is too few trades to draw a conclusion. A single stock is a small sample.
Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.