The Filings Report

Halozyme Therapeutics, Inc. insider trading

HALOfinancial statementsForm 4 filings on EDGAR309 transactions since Nov 3, 2024

From August 6, 2026 to November 3, 2026, 0 insiders at Halozyme Therapeutics, Inc. bought $0 of stock in the open market, and 3 sold $22M. Officers and directors accounted for $0 of purchases and $22M of sales. The last reported transaction was an option exercise by Torley Helen on October 8, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through October 8, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

HALO daily priceSplit-adjusted prices in US dollars

Bought $0Sold $22MAug 6, 2026 – Nov 3, 2026

Nov 3, 2026O $128.29 · H $131.36 · L $128.26 · C $128.62Bought $0 (0)Sold $0 (0)
$80$94$108$123$1372026-08-06: open $84.15, high $86.00, low $82.60, close $85.762026-08-07: open $90.00, high $103.30, low $90.00, close $103.122026-08-10: open $102.67, high $104.77, low $101.11, close $102.622026-08-11: open $103.62, high $104.78, low $101.81, close $102.622026-08-12: open $102.00, high $102.58, low $100.49, close $101.792026-08-13: open $101.95, high $102.40, low $99.41, close $100.672026-08-14: open $100.35, high $100.83, low $98.13, close $98.662026-08-17: open $98.86, high $104.09, low $98.58, close $103.002026-08-18: open $102.95, high $105.11, low $102.39, close $104.892026-08-19: open $106.39, high $107.96, low $105.50, close $107.622026-08-20: open $106.41, high $107.44, low $105.20, close $106.122026-08-21: open $106.20, high $108.49, low $105.91, close $108.172026-08-24: open $108.00, high $109.10, low $106.87, close $108.642026-08-25: open $109.33, high $109.55, low $107.55, close $109.322026-08-26: open $109.32, high $109.66, low $107.00, close $107.062026-08-27: open $106.87, high $107.55, low $106.05, close $106.922026-08-28: open $106.45, high $106.81, low $104.70, close $105.352026-08-31: open $104.48, high $106.94, low $103.47, close $106.492026-09-01: open $107.45, high $108.42, low $106.87, close $107.722026-09-02: open $105.84, high $109.76, low $105.48, close $109.662026-09-03: open $109.84, high $111.15, low $108.74, close $110.762026-09-04: open $109.91, high $111.15, low $109.00, close $110.192026-09-08: open $109.00, high $109.96, low $106.07, close $108.312026-09-09: open $107.67, high $108.79, low $106.62, close $107.392026-09-10: open $106.93, high $107.95, low $106.36, close $107.002026-09-11: open $107.96, high $108.23, low $106.34, close $107.202026-09-14: open $108.00, high $108.61, low $106.65, close $107.942026-09-15: open $108.14, high $108.14, low $106.14, close $106.252026-09-16: open $106.66, high $109.63, low $105.50, close $108.442026-09-17: open $107.08, high $110.88, low $106.95, close $109.682026-09-18: open $109.72, high $112.66, low $109.38, close $112.452026-09-21: open $112.80, high $113.47, low $111.05, close $111.452026-09-22: open $111.50, high $115.18, low $110.95, close $115.132026-09-23: open $116.85, high $116.85, low $112.18, close $112.442026-09-24: open $112.13, high $116.09, low $111.07, close $115.222026-09-25: open $115.36, high $115.63, low $113.43, close $113.902026-09-28: open $113.34, high $113.94, low $112.10, close $112.892026-09-29: open $112.89, high $114.52, low $111.03, close $111.562026-09-30: open $111.54, high $112.45, low $110.35, close $110.402026-10-01: open $109.93, high $110.50, low $106.84, close $106.942026-10-02: open $106.96, high $109.99, low $106.65, close $109.862026-10-05: open $109.62, high $109.87, low $107.68, close $108.312026-10-06: open $108.87, high $111.25, low $107.43, close $109.722026-10-07: open $111.62, high $114.00, low $110.16, close $110.792026-10-08: open $109.41, high $110.64, low $107.41, close $109.842026-10-09: open $109.70, high $112.65, low $109.70, close $110.422026-10-12: open $110.19, high $112.43, low $109.96, close $111.082026-10-13: open $111.92, high $111.92, low $108.80, close $109.622026-10-14: open $109.90, high $119.21, low $109.42, close $116.822026-10-15: open $118.35, high $122.33, low $117.38, close $121.512026-10-16: open $122.19, high $122.45, low $120.19, close $121.842026-10-19: open $121.72, high $123.60, low $121.69, close $122.502026-10-20: open $123.54, high $125.10, low $123.00, close $124.372026-10-21: open $123.90, high $125.43, low $122.71, close $124.832026-10-22: open $124.72, high $124.91, low $121.62, close $124.542026-10-23: open $124.54, high $126.23, low $123.74, close $125.632026-10-26: open $126.03, high $128.11, low $126.03, close $128.012026-10-27: open $127.21, high $128.94, low $126.13, close $128.502026-10-28: open $126.78, high $130.24, low $126.25, close $130.032026-10-29: open $131.06, high $132.55, low $130.09, close $131.182026-10-30: open $132.66, high $134.00, low $130.30, close $130.912026-11-02: open $130.50, high $131.89, low $127.52, close $128.952026-11-03: open $128.29, high $131.36, low $128.26, close $128.62Insider purchases / sales · USD$5M$0−$5M2026-08-10: 0 purchases ($0), 1 sales ($167K)2026-08-17: 0 purchases ($0), 5 sales ($2M)2026-08-18: 0 purchases ($0), 3 sales ($2M)2026-08-19: 0 purchases ($0), 3 sales ($2M)2026-09-09: 0 purchases ($0), 3 sales ($2M)2026-09-10: 0 purchases ($0), 2 sales ($2M)2026-09-11: 0 purchases ($0), 2 sales ($2M)2026-09-16: 0 purchases ($0), 4 sales ($2M)2026-10-01: 0 purchases ($0), 4 sales ($568K)2026-10-06: 0 purchases ($0), 4 sales ($2M)2026-10-07: 0 purchases ($0), 4 sales ($2M)2026-10-08: 0 purchases ($0), 4 sales ($2M)Aug 6Aug 28Sep 21Oct 13Nov 3

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Nov 3, 2026. Insider data through Nov 3, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

309 transactions from November 3, 2024 to November 3, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Oct 8, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Oct 8, 2026
Oct 8, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-14,810$108.18$520K782,970Oct 8, 2026
Oct 8, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-13,090$108.91$337K779,880Oct 8, 2026
Oct 8, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-111,900$110.00$1M767,980Oct 8, 2026
Oct 8, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-1200$110.51$22K767,780Oct 8, 2026
Oct 7, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Oct 8, 2026
Oct 7, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-18,600$111.03$955K779,180Oct 8, 2026
Oct 7, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-110,300$111.84$1M768,880Oct 8, 2026
Oct 7, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-1900$112.78$102K767,980Oct 8, 2026
Oct 7, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-1200$113.69$23K767,780Oct 8, 2026
Oct 6, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Oct 8, 2026
Oct 6, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-12,300$107.90$248K785,480Oct 8, 2026
Oct 6, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-16,000$109.33$656K779,480Oct 8, 2026
Oct 6, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-19,920$109.89$1M769,560Oct 8, 2026
Oct 6, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-11,780$110.81$197K767,780Oct 8, 2026
Oct 1, 2026Daly James MDirectoraward1,169$0.00—1,169Oct 2, 2026
Oct 1, 2026Posard Matthew L.Directoropen-market sale10b5-1730$107.17$78K58,109Oct 2, 2026
Oct 1, 2026Posard Matthew L.Directoropen-market sale10b5-13,300$108.45$358K54,809Oct 2, 2026
Oct 1, 2026Posard Matthew L.Directoropen-market sale10b5-11,100$109.57$121K53,709Oct 2, 2026
Oct 1, 2026Posard Matthew L.Directoropen-market sale10b5-1100$110.04$11K53,609Oct 2, 2026
Sep 16, 2026Posard Matthew L.Directoropen-market sale10b5-13,100$106.13$329K74,735Sep 17, 2026
Sep 16, 2026Posard Matthew L.Directoropen-market sale10b5-13,000$106.83$320K71,735Sep 17, 2026
Sep 16, 2026Posard Matthew L.Directoropen-market sale10b5-18,896$108.04$961K62,839Sep 17, 2026
Sep 16, 2026Posard Matthew L.Directoropen-market sale10b5-14,000$108.99$436K58,839Sep 17, 2026
Sep 11, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Sep 11, 2026
Sep 11, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-115,492$107.15$2M772,288Sep 11, 2026
Sep 11, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-14,508$107.55$485K767,780Sep 11, 2026
Sep 10, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Sep 11, 2026
Sep 10, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-114,588$107.01$2M773,192Sep 11, 2026
Sep 10, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-15,412$107.58$582K767,780Sep 11, 2026
Sep 9, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Sep 11, 2026
Sep 9, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-113,304$107.22$1M774,476Sep 11, 2026
Sep 9, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-16,596$107.82$711K767,880Sep 11, 2026
Sep 9, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-1100$108.67$11K767,780Sep 11, 2026
Sep 1, 2026Appelhans DannielleDirectoraward1,161$0.00—1,161Sep 2, 2026
Aug 19, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Aug 19, 2026
Aug 19, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-17,200$106.36$766K780,580Aug 19, 2026
Aug 19, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-19,600$107.22$1M770,980Aug 19, 2026
Aug 19, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-13,200$107.77$345K767,780Aug 19, 2026
Aug 18, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Aug 19, 2026
Aug 18, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-15,703$103.08$588K782,077Aug 19, 2026
Aug 18, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-14,897$104.11$510K777,180Aug 19, 2026
Aug 18, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-19,400$104.87$986K767,780Aug 19, 2026
Aug 17, 2026Torley HelenPRESIDENT AND CEO, Directoroption exercise20,000$18.41$368K787,780Aug 19, 2026
Aug 17, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-1900$98.96$89K786,880Aug 19, 2026
Aug 17, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-1500$100.46$50K786,380Aug 19, 2026
Aug 17, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-12,100$101.77$214K784,280Aug 19, 2026
Aug 17, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-19,000$102.55$923K775,280Aug 19, 2026
Aug 17, 2026Torley HelenPRESIDENT AND CEO, Directoropen-market sale10b5-17,500$103.48$776K767,780Aug 19, 2026
Aug 10, 2026Connaughton BernadetteDirectoropen-market sale10b5-11,626$102.80$167K40,418Aug 11, 2026

Who the insiders are

Everyone who reported a transaction since November 3, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Torley HelenPRESIDENT AND CEO, DirectorOct 8, 2026option exercise787,780—$42M (85)85 of 85
Posard Matthew L.DirectorOct 1, 2026open-market sale58,109—$3M (8)8 of 8
Caudill CortneySVP, CHIEF OPERATING OFFICERMar 10, 2026open-market sale7,055—$2M (3)0 of 3
Connaughton BernadetteDirectorAug 10, 2026open-market sale40,418—$839K (8)8 of 8
Krishnan MaheshDirectorJun 29, 2026option exercise21,766—$548K (1)1 of 1
LaBrosse NicoleSVP, CHIEF FINANCIAL OFFICERFeb 23, 2026tax withholding38,494———
Snyder Mark HowardSVP, CHIEF LEGAL OFFICERJun 12, 2026option exercise52,644———
LaBarre Michael J.SVP, CHIEF TECHNICAL OFFICERFeb 27, 2025open-market sale173,856———
Henderson Jeffrey WilliamDirectorMay 5, 2026award36,572———
Ramsay David AEVP, PRESIDENT, DRUG DELIVERYJun 30, 2026option exercise10,000———
Lang James PaulDirectorMay 5, 2026award4,685———
Duncan Barbara GayleDirectorMay 5, 2026award23,715———
Daly James MDirectorOct 1, 2026award1,169———
Appelhans DannielleDirectorSep 1, 2026award1,161———
Miyashita Akiko MoniDirectorMay 1, 2025award24,937———
Matsui ConnieDirectorNov 29, 2024gift183,035———

Questions

Are Halozyme Therapeutics, Inc. insiders buying or selling?

Over the twelve months to November 3, 2026, 5 insiders at Halozyme Therapeutics, Inc. sold $48M of stock in the open market, all by officers and directors, and no insider bought. Net, insiders sold $48M. Only open-market purchases and sales are counted.

Who sold the most Halozyme Therapeutics, Inc. stock in the last year?

Torley Helen (PRESIDENT AND CEO, Director) sold $42M in 85 open-market sales over the twelve months to November 3, 2026.

Do Halozyme Therapeutics, Inc. executives sell under 10b5-1 plans?

102 of the 105 open-market sales in the last twelve months (97%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on Halozyme Therapeutics, Inc.

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.