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HALO · HALOZYME THERAPEUTICS, INC.

Everything on this page is public record — SEC Form 4 filings and congressional disclosures — alongside any INSIDER SCANNER research case for this company.

Open-market buys0
Open-market sells38
Research cases0
Last filing2026-10-08

Insider flow: Selling only — a count of disclosed transactions, not a rating or a recommendation.

Insider transaction timeline

Every reported transaction, positioned by trade date. Purchases sit above the axis, sales below; circle area is proportional to dollar value. No share-price line is drawn — this feed carries transaction prices only, and a price history inferred from them would imply market data the filings do not contain.

Open-market purchase Open-market sale
2026-08-17 — Torley Helen · sold 2,100 @ $101.77 2026-08-17 — Torley Helen · sold 500 @ $100.46 2026-08-17 — Torley Helen · sold 7,500 @ $103.48 2026-08-17 — Torley Helen · sold 900 @ $98.96 2026-08-17 — Torley Helen · sold 9,000 @ $102.55 2026-08-18 — Torley Helen · sold 4,897 @ $104.11 2026-08-18 — Torley Helen · sold 5,703 @ $103.08 2026-08-18 — Torley Helen · sold 9,400 @ $104.87 2026-08-19 — Torley Helen · sold 3,200 @ $107.77 2026-08-19 — Torley Helen · sold 7,200 @ $106.36 2026-08-19 — Torley Helen · sold 9,600 @ $107.22 2026-09-09 — Torley Helen · sold 13,304 @ $107.22 2026-09-09 — Torley Helen · sold 6,596 @ $107.82 2026-09-09 — Torley Helen · sold 100 @ $108.67 2026-09-10 — Torley Helen · sold 14,588 @ $107.01 2026-09-10 — Torley Helen · sold 5,412 @ $107.58 2026-09-11 — Torley Helen · sold 15,492 @ $107.15 2026-09-11 — Torley Helen · sold 4,508 @ $107.55 2026-09-16 — Posard Matthew L. · sold 3,000 @ $106.83 2026-09-16 — Posard Matthew L. · sold 3,100 @ $106.13 2026-09-16 — Posard Matthew L. · sold 4,000 @ $108.99 2026-09-16 — Posard Matthew L. · sold 8,896 @ $108.04 2026-10-01 — Posard Matthew L. · sold 730 @ $107.17 2026-10-01 — Posard Matthew L. · sold 3,300 @ $108.45 2026-10-01 — Posard Matthew L. · sold 1,100 @ $109.57 2026-10-01 — Posard Matthew L. · sold 100 @ $110.04 2026-10-06 — Torley Helen · sold 2,300 @ $107.90 2026-10-06 — Torley Helen · sold 6,000 @ $109.33 2026-10-06 — Torley Helen · sold 9,920 @ $109.89 2026-10-06 — Torley Helen · sold 1,780 @ $110.81 2026-10-07 — Torley Helen · sold 8,600 @ $111.03 2026-10-07 — Torley Helen · sold 10,300 @ $111.84 2026-10-07 — Torley Helen · sold 900 @ $112.78 2026-10-07 — Torley Helen · sold 200 @ $113.69 2026-10-08 — Torley Helen · sold 4,810 @ $108.18 2026-10-08 — Torley Helen · sold 3,090 @ $108.91 2026-10-08 — Torley Helen · sold 11,900 @ $110.00 2026-10-08 — Torley Helen · sold 200 @ $110.51
2026-08-172026-10-08

Insider participation

One row per insider, one cell per reported transaction, shaded by value. Repeat buying and activity clustered in time are visible at a glance.

Torley Helen PRESIDENT AND CEO, Director
Posard Matthew L. Director
Included with a free account

The analysis built on top of these filings

The filings above are public record and stay public here. What an account adds for $HALO is the reading of them — and for this company, that is what the list below says it is, no more.

  • Transaction timelineThe [{'transaction_date': '2026-10-08', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 4810.0, 'price': 108.179, 'value': 520340.99, 'is_buy': False}, {'transaction_date': '2026-10-08', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 3090.0, 'price': 108.908, 'value': 336525.72, 'is_buy': False}, {'transaction_date': '2026-10-08', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 11900.0, 'price': 109.995, 'value': 1308940.5, 'is_buy': False}, {'transaction_date': '2026-10-08', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 200.0, 'price': 110.51, 'value': 22102.0, 'is_buy': False}, {'transaction_date': '2026-10-07', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 8600.0, 'price': 111.031, 'value': 954866.6, 'is_buy': False}, {'transaction_date': '2026-10-07', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 10300.0, 'price': 111.839, 'value': 1151941.7, 'is_buy': False}, {'transaction_date': '2026-10-07', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 900.0, 'price': 112.78, 'value': 101502.0, 'is_buy': False}, {'transaction_date': '2026-10-07', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 200.0, 'price': 113.693, 'value': 22738.6, 'is_buy': False}, {'transaction_date': '2026-10-06', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 2300.0, 'price': 107.902, 'value': 248174.6, 'is_buy': False}, {'transaction_date': '2026-10-06', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 6000.0, 'price': 109.334, 'value': 656004.0, 'is_buy': False}, {'transaction_date': '2026-10-06', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 9920.0, 'price': 109.891, 'value': 1090118.72, 'is_buy': False}, {'transaction_date': '2026-10-06', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 1780.0, 'price': 110.812, 'value': 197245.36, 'is_buy': False}, {'transaction_date': '2026-10-01', 'insider_name': 'Posard Matthew L.', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 730.0, 'price': 107.168, 'value': 78232.64, 'is_buy': False}, {'transaction_date': '2026-10-01', 'insider_name': 'Posard Matthew L.', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 3300.0, 'price': 108.454, 'value': 357898.2, 'is_buy': False}, {'transaction_date': '2026-10-01', 'insider_name': 'Posard Matthew L.', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 1100.0, 'price': 109.569, 'value': 120525.9, 'is_buy': False}, {'transaction_date': '2026-10-01', 'insider_name': 'Posard Matthew L.', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 100.0, 'price': 110.04, 'value': 11004.0, 'is_buy': False}, {'transaction_date': '2026-09-16', 'insider_name': 'Posard Matthew L.', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 3000.0, 'price': 106.83, 'value': 320490.0, 'is_buy': False}, {'transaction_date': '2026-09-16', 'insider_name': 'Posard Matthew L.', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 3100.0, 'price': 106.13, 'value': 329003.0, 'is_buy': False}, {'transaction_date': '2026-09-16', 'insider_name': 'Posard Matthew L.', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 4000.0, 'price': 108.99, 'value': 435960.0, 'is_buy': False}, {'transaction_date': '2026-09-16', 'insider_name': 'Posard Matthew L.', 'insider_title': 'Director', 'transaction_type': 'Open-market sell', 'shares': 8896.0, 'price': 108.04, 'value': 961123.84, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 15492.0, 'price': 107.154, 'value': 1660029.77, 'is_buy': False}, {'transaction_date': '2026-09-11', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 4508.0, 'price': 107.548, 'value': 484826.38, 'is_buy': False}, {'transaction_date': '2026-09-10', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 14588.0, 'price': 107.012, 'value': 1561091.06, 'is_buy': False}, {'transaction_date': '2026-09-10', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 5412.0, 'price': 107.581, 'value': 582228.37, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 13304.0, 'price': 107.222, 'value': 1426481.49, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 6596.0, 'price': 107.821, 'value': 711187.32, 'is_buy': False}, {'transaction_date': '2026-09-09', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 100.0, 'price': 108.67, 'value': 10867.0, 'is_buy': False}, {'transaction_date': '2026-08-19', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 3200.0, 'price': 107.77, 'value': 344864.0, 'is_buy': False}, {'transaction_date': '2026-08-19', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 7200.0, 'price': 106.36, 'value': 765792.0, 'is_buy': False}, {'transaction_date': '2026-08-19', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 9600.0, 'price': 107.22, 'value': 1029312.0, 'is_buy': False}, {'transaction_date': '2026-08-18', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 4897.0, 'price': 104.11, 'value': 509826.67, 'is_buy': False}, {'transaction_date': '2026-08-18', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 5703.0, 'price': 103.08, 'value': 587865.24, 'is_buy': False}, {'transaction_date': '2026-08-18', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 9400.0, 'price': 104.87, 'value': 985778.0, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 2100.0, 'price': 101.77, 'value': 213717.0, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 500.0, 'price': 100.46, 'value': 50230.0, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 7500.0, 'price': 103.48, 'value': 776100.0, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 900.0, 'price': 98.96, 'value': 89064.0, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Torley Helen', 'insider_title': 'PRESIDENT AND CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 9000.0, 'price': 102.55, 'value': 922950.0, 'is_buy': False}] reported transactions plotted over the window rather than listed, so concentration is visible.

Not available for HALO today: no reported open-market purchases in this window, so there is no insider cost basis to compute; no research case — nothing here has cleared the scoring threshold. Both appear on this page on their own if that changes.

A free account opens all of it.

Not financial advice. This page reports public filings and past research output. It is not a recommendation to buy or sell, and no price target here is a prediction. Trade at your own risk.