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HALO

HALOZYME THERAPEUTICS (HALO) stock: insider trades, news & valuation

Heavy selling
Close · Oct 9, 2026 $110.42 +0.5% on the day +69.6% over 12 months 52-week range $61.63 – $115.22

Share price and insider trades

HALO closeInsider buyInsider sale
6080100120NovDecJan 2026FebMarAprMayJunJulAugSepOctSold $103,155 on 2026-05-01 · Bernadette ConnaughtonSold $124,656 on 2026-07-01 · Bernadette ConnaughtonSold $140,500 on 2026-01-05 · Bernadette ConnaughtonSold $153,397 on 2026-07-08 · Helen TorleySold $167,153 on 2026-08-10 · Bernadette ConnaughtonSold $277,905 on 2025-11-01 · Cortney CaudillSold $547,800 on 2026-06-29 · Mahesh KrishnanSold $567,661 on 2026-10-01 · Matthew L. PosardSold $599,087 on 2026-03-10 · Cortney CaudillSold $635,008 on 2026-04-06 · Helen TorleySold $690,657 on 2026-06-03 · Helen TorleySold $691,914 on 2026-05-13 · Helen TorleySold $702,098 on 2026-03-04 · Helen TorleySold $786,389 on 2026-02-05 · Helen TorleySold $1,201,254 on 2025-12-01 · Bernadette Connaughton, Helen TorleySold $1,284,686 on 2026-04-02 · Helen TorleySold $1,306,957 on 2026-05-11 · Helen TorleySold $1,307,550 on 2026-04-01 · Helen TorleySold $1,327,696 on 2026-06-02 · Helen TorleySold $1,356,050 on 2026-03-09 · Cortney CaudillSold $1,380,129 on 2026-03-03 · Helen TorleySold $1,382,600 on 2025-11-11 · Helen TorleySold $1,393,921 on 2026-03-02 · Helen TorleySold $1,411,024 on 2025-11-12 · Helen TorleySold $1,435,040 on 2026-05-12 · Helen TorleySold $1,459,226 on 2026-06-01 · Bernadette Connaughton, Helen TorleySold $1,511,219 on 2025-11-10 · Bernadette Connaughton, Helen TorleySold $1,522,250 on 2026-02-03 · Helen TorleySold $1,544,860 on 2026-02-04 · Helen TorleySold $2,046,577 on 2026-09-16 · Matthew L. PosardSold $2,052,061 on 2026-08-17 · Helen TorleySold $2,083,470 on 2026-08-18 · Helen TorleySold $2,139,968 on 2026-08-19 · Helen TorleySold $2,143,285 on 2026-09-10 · Helen TorleySold $2,144,803 on 2026-09-11 · Helen TorleySold $2,148,503 on 2026-09-09 · Helen TorleySold $2,187,909 on 2026-10-08 · Helen TorleySold $2,191,543 on 2026-10-06 · Helen TorleySold $2,231,049 on 2026-10-07 · Helen Torley
Bought, 12 months$0
Sold, 12 months$48.4M
Insiders buying0
Insiders selling5

HALOZYME THERAPEUTICS insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 5 sold $48.4M of HALO stock on the open market.

HALO insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q4 2025: $10.2M sold (28 trades)Q4 2025Q1 2026: $9.4M sold (18 trades)Q1 2026Q2 2026: $10.8M sold (30 trades)Q2 2026Q3 2026: $15.2M sold (27 trades)Q3 2026Q4 2026: $7.2M sold (16 trades)Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0$7.2M16
Q3 2026—0$15.2M27
Q2 2026—0$10.8M30
Q1 2026—0$9.4M18
Q4 2025—0$10.2M28

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day0.9×Last 5 sessions
Insiders' paper profit—On all tracked purchases —

Summary

Over the past 12 months, 0 HALOZYME THERAPEUTICS, INC. insiders reported open-market purchases totaling $0, while 5 insiders reported sales totaling $48.4M. 115 of 119 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Oct 8SEC Helen TorleyCEO, President Sell Plan 11,900767,980 held (−2%) $110.00 $1.3M +0.4% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 10,300768,880 held (−1%) $111.84 $1.2M -1.3% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 9,920769,560 held (−1%) $109.89 $1.1M +0.5% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 8,600779,180 held (−1%) $111.03 $955K -0.6% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 6,000779,480 held (−1%) $109.33 $656K +1.0% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 4,810782,970 held (−1%) $108.18 $520K +2.1% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 3,090779,880 held (−0%) $108.91 $337K +1.4% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 2,300785,480 held (−0%) $107.90 $248K +2.3% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 1,780767,780 held (−0%) $110.81 $197K -0.4% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 900767,980 held (−0%) $112.78 $102K -2.1% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 200767,780 held (−0%) $113.69 $23K -2.9% —
Oct 8SEC Helen TorleyCEO, President Sell Plan 200767,780 held (−0%) $110.51 $22K -0.1% —
Oct 2SEC Matthew L. PosardDirector Sell Plan 3,30054,809 held (−6%) $108.45 $358K +1.8% —
Oct 2SEC Matthew L. PosardDirector Sell Plan 1,10053,709 held (−2%) $109.57 $121K +0.8% —
Oct 2SEC Matthew L. PosardDirector Sell Plan 73058,109 held (−1%) $107.17 $78K +3.0% —
Oct 2SEC Matthew L. PosardDirector Sell Plan 10053,609 held (−0%) $110.04 $11K +0.3% —
Sep 17SEC Matthew L. PosardDirector Sell Plan 8,89662,839 held (−12%) $108.04 $961K +2.2% —
Sep 17SEC Matthew L. PosardDirector Sell Plan 4,00058,839 held (−6%) $108.99 $436K +1.3% —
Sep 17SEC Matthew L. PosardDirector Sell Plan 3,10074,735 held (−4%) $106.13 $329K +4.0% —
Sep 17SEC Matthew L. PosardDirector Sell Plan 3,00071,735 held (−4%) $106.83 $320K +3.4% —
Sep 11SEC Helen TorleyCEO, President Sell Plan 15,492772,288 held (−2%) $107.15 $1.7M +3.1% —
Sep 11SEC Helen TorleyCEO, President Sell Plan 14,588773,192 held (−2%) $107.01 $1.6M +3.2% —
Sep 11SEC Helen TorleyCEO, President Sell Plan 13,304774,476 held (−2%) $107.22 $1.4M +3.0% —
Sep 11SEC Helen TorleyCEO, President Sell Plan 6,596767,880 held (−1%) $107.82 $711K +2.4% —
Sep 11SEC Helen TorleyCEO, President Sell Plan 5,412767,780 held (−1%) $107.58 $582K +2.6% —
Sep 11SEC Helen TorleyCEO, President Sell Plan 4,508767,780 held (−1%) $107.55 $485K +2.7% —
Sep 11SEC Helen TorleyCEO, President Sell Plan 100767,780 held (−0%) $108.67 $11K +1.6% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 9,600770,980 held (−1%) $107.22 $1.0M +3.0% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 9,400767,780 held (−1%) $104.87 $986K +5.3% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 9,000775,280 held (−1%) $102.55 $923K +7.7% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 7,500767,780 held (−1%) $103.48 $776K +6.7% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 7,200780,580 held (−1%) $106.36 $766K +3.8% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 5,703782,077 held (−1%) $103.08 $588K +7.1% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 4,897777,180 held (−1%) $104.11 $510K +6.1% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 3,200767,780 held (−0%) $107.77 $345K +2.5% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 2,100784,280 held (−0%) $101.77 $214K +8.5% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 900786,880 held (−0%) $98.96 $89K +11.6% —
Aug 19SEC Helen TorleyCEO, President Sell Plan 500786,380 held (−0%) $100.46 $50K +9.9% —
Aug 11SEC Bernadette ConnaughtonDirector Sell Plan 1,62640,418 held (−4%) $102.80 $167K +7.4% —
Jul 9SEC Helen TorleyCEO, President Sell Plan 1,035767,780 held (−0%) $80.19 $83K +37.7% —
Jul 9SEC Helen TorleyCEO, President Sell Plan 888768,815 held (−0%) $79.28 $70K +39.3% —
Jul 2SEC Bernadette ConnaughtonDirector Sell Plan 1,00042,669 held (−2%) $76.40 $76K +44.5% —
Jul 2SEC Bernadette ConnaughtonDirector Sell Plan 62542,044 held (−1%) $77.21 $48K +43.0% —
Jun 30SEC Mahesh KrishnanDirector Sell Plan 7,30414,462 held (−34%) $75.00 $548K +47.2% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 16,600771,180 held (−2%) $66.31 $1.1M +66.5% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 12,989773,181 held (−2%) $67.41 $876K +63.8% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 6,100767,780 held (−1%) $69.69 $425K +58.4% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 5,401767,780 held (−1%) $68.35 $369K +61.6% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 3,400767,780 held (−0%) $66.75 $227K +65.4% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 2,000773,880 held (−0%) $68.74 $137K +60.6% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 1,610786,170 held (−0%) $66.39 $107K +66.3% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 1,500775,880 held (−0%) $67.68 $102K +63.2% —
Jun 3SEC Helen TorleyCEO, President Sell Plan 400777,380 held (−0%) $66.37 $27K +66.4% —
Jun 2SEC Bernadette ConnaughtonDirector Sell Plan 1,62543,669 held (−4%) $66.21 $108K +66.8% —
May 13SEC Helen TorleyCEO, President Sell Plan 9,802776,480 held (−1%) $71.37 $700K +54.7% —
May 13SEC Helen TorleyCEO, President Sell Plan 9,725778,055 held (−1%) $64.63 $629K +70.8% —
May 13SEC Helen TorleyCEO, President Sell Plan 6,700767,780 held (−1%) $66.33 $444K +66.5% —
May 13SEC Helen TorleyCEO, President Sell Plan 5,900770,580 held (−1%) $72.15 $426K +53.0% —
May 13SEC Helen TorleyCEO, President Sell Plan 3,950768,380 held (−1%) $69.79 $276K +58.2% —
May 13SEC Helen TorleyCEO, President Sell Plan 3,575774,480 held (−0%) $65.46 $234K +68.7% —
May 13SEC Helen TorleyCEO, President Sell Plan 3,350772,330 held (−0%) $68.88 $231K +60.3% —
May 13SEC Helen TorleyCEO, President Sell Plan 2,800767,780 held (−0%) $73.12 $205K +51.0% —
May 13SEC Helen TorleyCEO, President Sell Plan 2,100775,680 held (−0%) $68.10 $143K +62.1% —
May 13SEC Helen TorleyCEO, President Sell Plan 1,398786,282 held (−0%) $70.29 $98K +57.1% —
May 13SEC Helen TorleyCEO, President Sell Plan 600767,780 held (−0%) $70.81 $42K +55.9% —
May 13SEC Helen TorleyCEO, President Sell Plan 100787,680 held (−0%) $67.85 $7K +62.7% —
May 5SEC Bernadette ConnaughtonDirector Sell Plan 1,62538,498 held (−4%) $63.48 $103K +73.9% —
Apr 7SEC Helen TorleyCEO, President Sell Plan 5,900771,880 held (−1%) $63.14 $373K +74.9% —
Apr 7SEC Helen TorleyCEO, President Sell Plan 4,100767,780 held (−1%) $64.02 $262K +72.5% —
Apr 2SEC Helen TorleyCEO, President Sell Plan 19,000768,780 held (−2%) $65.36 $1.2M +68.9% —
Apr 2SEC Helen TorleyCEO, President Sell Plan 15,800771,980 held (−2%) $64.06 $1.0M +72.4% —
Apr 2SEC Helen TorleyCEO, President Sell Plan 4,200767,780 held (−1%) $64.89 $273K +70.2% —
Apr 2SEC Helen TorleyCEO, President Sell Plan 1,000767,780 held (−0%) $65.71 $66K +68.0% —
Mar 10SEC Cortney CaudillCOO Sell 17,90016,466 held (−52%) $67.75 $1.2M +63.0% —
Mar 10SEC Cortney CaudillCOO Sell 8,8577,055 held (−56%) $67.64 $599K +63.2% —
Mar 10SEC Cortney CaudillCOO Sell 2,10014,366 held (−13%) $68.25 $143K +61.8% —
Mar 4SEC Helen TorleyCEO, President Sell Plan 15,322768,358 held (−2%) $69.80 $1.1M +58.2% —
Mar 4SEC Helen TorleyCEO, President Sell Plan 13,481774,299 held (−2%) $68.85 $928K +60.4% —
Mar 4SEC Helen TorleyCEO, President Sell Plan 7,329770,451 held (−1%) $69.94 $513K +57.9% —
Mar 4SEC Helen TorleyCEO, President Sell Plan 6,519767,780 held (−1%) $69.33 $452K +59.3% —
Mar 4SEC Helen TorleyCEO, President Sell Plan 4,100783,680 held (−1%) $69.20 $284K +59.6% —
Mar 4SEC Helen TorleyCEO, President Sell Plan 2,671767,780 held (−0%) $70.95 $190K +55.6% —
Mar 4SEC Helen TorleyCEO, President Sell Plan 578767,780 held (−0%) $70.46 $41K +56.7% —
Feb 5SEC Helen TorleyCEO, President Sell Plan 10,100708,719 held (−1%) $77.54 $783K +42.4% —
Feb 5SEC Helen TorleyCEO, President Sell Plan 9,900718,819 held (−1%) $76.94 $762K +43.5% —
Feb 5SEC Helen TorleyCEO, President Sell Plan 9,659716,509 held (−1%) $75.94 $734K +45.4% —
Feb 5SEC Helen TorleyCEO, President Sell Plan 7,790708,719 held (−1%) $76.73 $598K +43.9% —
Feb 5SEC Helen TorleyCEO, President Sell Plan 5,376713,343 held (−1%) $78.38 $421K +40.9% —
Feb 5SEC Helen TorleyCEO, President Sell Plan 4,624708,719 held (−1%) $78.94 $365K +39.9% —
Feb 5SEC Helen TorleyCEO, President Sell Plan 2,551726,168 held (−0%) $74.88 $191K +47.5% —
Jan 6SEC Bernadette ConnaughtonDirector Sell Plan 2,00040,123 held (−5%) $70.25 $140K +57.2% —
Dec 19SEC Cortney CaudillCOO Sell 4,26312,737 held (−25%) $65.19 $278K +69.4% —
Dec 1SEC Helen TorleyCEO, President Sell Plan 10,406714,882 held (−1%) $68.51 $713K +61.2% —
Dec 1SEC Helen TorleyCEO, President Sell Plan 5,402709,480 held (−1%) $69.44 $375K +59.0% —
Dec 1SEC Bernadette ConnaughtonDirector Sell Plan 82942,123 held (−2%) $71.60 $59K +54.2% —
Dec 1SEC Helen TorleyCEO, President Sell Plan 500708,980 held (−0%) $70.36 $35K +56.9% —
Dec 1SEC Helen TorleyCEO, President Sell Plan 261708,719 held (−0%) $71.60 $19K +54.2% —
Nov 12SEC Helen TorleyCEO, President Sell Plan 19,900733,819 held (−3%) $68.71 $1.4M +60.7% —
Nov 12SEC Helen TorleyCEO, President Sell Plan 12,718741,001 held (−2%) $70.22 $893K +57.2% —
Nov 12SEC Helen TorleyCEO, President Sell Plan 11,500733,719 held (−2%) $69.73 $802K +58.4% —
Nov 12SEC Helen TorleyCEO, President Sell Plan 6,784734,217 held (−1%) $71.09 $482K +55.3% —
Nov 12SEC Helen TorleyCEO, President Sell Plan 4,500749,219 held (−1%) $67.89 $306K +62.6% —
Nov 12SEC Helen TorleyCEO, President Sell Plan 4,000745,219 held (−1%) $68.80 $275K +60.5% —
Nov 12SEC Bernadette ConnaughtonDirector Sell Plan 2,00042,952 held (−4%) $68.48 $137K +61.2% —
Nov 12SEC Helen TorleyCEO, President Sell Plan 498733,719 held (−0%) $71.67 $36K +54.1% —
Nov 12SEC Helen TorleyCEO, President Sell Plan 100733,719 held (−0%) $69.30 $7K +59.3% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 14,235739,484 held (−2%) $68.47 $975K +61.3% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 11,705742,014 held (−2%) $75.11 $879K +47.0% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 10,200736,919 held (−1%) $71.28 $727K +54.9% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 8,295733,719 held (−1%) $75.69 $628K +45.9% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 6,600747,119 held (−1%) $70.51 $465K +56.6% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 2,707734,443 held (−0%) $70.58 $191K +56.4% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 2,400734,519 held (−0%) $72.07 $173K +53.2% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 2,334737,150 held (−0%) $69.83 $163K +58.1% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 724733,719 held (−0%) $71.67 $52K +54.1% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 700733,819 held (−0%) $73.24 $51K +50.8% —
Oct 3SEC Helen TorleyCEO, President Sell Plan 100733,719 held (−0%) $74.67 $7K +47.9% —
Oct 1SEC Bernadette ConnaughtonDirector Sell Plan 1,50045,452 held (−3%) $75.09 $113K +47.1% —
Oct 1SEC Bernadette ConnaughtonDirector Sell Plan 50044,952 held (−1%) $75.70 $38K +45.9% —

Insiders at HALOZYME THERAPEUTICS, INC.

InsiderBoughtSoldLast filingScore
Helen TorleyCEO, President — $46.5M Oct 8, 2026 —
Matthew L. PosardDirector — $2.6M Oct 2, 2026 —
Cortney CaudillCOO — $2.2M Mar 10, 2026 —
Bernadette ConnaughtonDirector — $990K Aug 11, 2026 —
Mahesh KrishnanDirector — $548K Jun 30, 2026 —

HALO stock: common questions

Are HALOZYME THERAPEUTICS, INC. insiders buying HALO stock?

In the past 12 months, 0 insiders reported open-market purchases of HALO worth $0.

Are HALOZYME THERAPEUTICS, INC. insiders selling HALO stock?

5 insiders reported sales worth $48.4M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is HALO's 52-week range?

Over the past year HALO has traded between $61.63 and $115.22. It last closed at $110.42 on Oct 9, 2026.