Halozyme Therapeutic (HALO): Congress and insider trades
Who in Congress and inside the company traded HALO, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Halozyme Therapeutic (HALO) is a listed stock on NASDAQ.
- 3 members of Congress filed 4 buys and 3 sells of HALO, the latest published 2026-04-08 (8 April 2026).
- Insiders filed 0 open market buys worth $0 and 20 sells worth $22M, the latest filed 2026-09-11 (11 September 2026).
- Across 2 scored buys, Congress averaged -0.8% against the S&P 500 (SPY) over the 90 days after disclosure, with 50% 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 HALO
as of 2026-04-08| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 8 Apr 2026 | Gil Cisneros (D-CA) | buy | 1K–15K | 29 | +9.9% |
| 14 Aug 2023 | Daniel S. Goldman (D-NY) | sell | 15K–50K | 32 | n/a |
| 16 Jan 2023 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 38 | n/a |
| 19 Sep 2022 | Josh Gottheimer (D-NJ) | sell | 1K–15K | 42 | n/a |
| 21 Sep 2021 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 31 | -11.6% |
| 6 Nov 2020 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 17 | n/a |
| 6 Nov 2020 | Gil Cisneros (D-CA) | buy | 1K–15K | 14 | n/a |
Nothing matches that search.
Insider trades in HALO
as of 2026-09-11| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 11 Sep 2026 | Torley Helen | sell | 20,000 | $107.43 | $2.1M | n/a |
| 11 Sep 2026 | Torley Helen | sell | 20,000 | $107.17 | $2.1M | n/a |
| 11 Sep 2026 | Torley Helen | sell | 20,000 | $107.24 | $2.1M | n/a |
| 19 Aug 2026 | Torley Helen | sell | 20,000 | $104.18 | $2.1M | n/a |
| 19 Aug 2026 | Torley Helen | sell | 20,000 | $102.60 | $2.1M | n/a |
| 19 Aug 2026 | Torley Helen | sell | 20,000 | $107.00 | $2.1M | n/a |
| 11 Aug 2026 | Connaughton Bernadette | sell | 1,626 | $102.80 | $167K | n/a |
| 9 Jul 2026 | Torley Helen | sell | 1,923 | $79.77 | $153K | n/a |
| 2 Jul 2026 | Connaughton Bernadette | sell | 1,625 | $76.71 | $125K | n/a |
| 30 Jun 2026 | Krishnan Mahesh | sell | 7,304 | $75.00 | $548K | n/a |
| 3 Jun 2026 | Torley Helen | sell | 10,000 | $69.07 | $691K | n/a |
| 3 Jun 2026 | Torley Helen | sell | 20,000 | $66.39 | $1.3M | n/a |
| 3 Jun 2026 | Torley Helen | sell | 20,000 | $67.58 | $1.4M | n/a |
| 2 Jun 2026 | Connaughton Bernadette | sell | 1,625 | $66.21 | $108K | n/a |
| 5 May 2026 | Connaughton Bernadette | sell | 1,625 | $63.48 | $103K | n/a |
| 7 Apr 2026 | Torley Helen | sell | 10,000 | $63.50 | $635K | n/a |
| 2 Apr 2026 | Torley Helen | sell | 20,000 | $64.24 | $1.3M | n/a |
| 2 Apr 2026 | Torley Helen | sell | 20,000 | $65.38 | $1.3M | n/a |
| 10 Mar 2026 | Caudill Cortney | sell | 8,857 | $67.64 | $599K | n/a |
| 10 Mar 2026 | Caudill Cortney | sell | 20,000 | $67.80 | $1.4M | n/a |
Nothing matches that search.
Related pages
Frequently asked questions
Who has bought HALO?
4 Congress buys by 3 members and 0 insider buys are on file. The tables on this page list every one.
Did buying HALO after a disclosure beat the market?
Across 2 scored buys, Congress averaged -0.8% against the S&P 500 (SPY) over the 90 days after disclosure, with 50% 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.