WallStSmart
GSK

GlaxoSmithKline PLC ADR

NYSE: GSK · HEALTHCARE · DRUG MANUFACTURERS - GENERAL

$48.74
-4.32% today

Updated 2026-10-28

Market cap
$99.19B
P/E ratio
15.62
P/S ratio
2.99x
EPS (TTM)
$3.17
Dividend yield
3.67%
52W range
$41 – $60
Volume
4.2M
OverviewPrice TargetsFinancialsValuationInsidersEarnings

GlaxoSmithKline PLC ADR (GSK) Insider transactions

Net insider activity
Net selling (108,429,935 shares)
Buy transactions
57
Sell transactions
43

All transactions

DateInsiderTitleTypeSharesPriceValue
2025-12-11GSK, PLC10% OwnerBuy1,470,000$19.00$27.93M
2024-09-27GSK, PLC10% OwnerBuy2,791,930$8.00$22.34M
2023-12-07GSK, PLC10% OwnerBuy3,300,000$5.00$16.50M
2022-09-16GSK, PLCFormer 10% OwnerSale9,644,807$9.75$94.04M
2022-09-16GSK, PLCFormer 10% OwnerBuy———
2022-09-16GSK, PLCFormer 10% OwnerBuy———
2022-09-16GSK, PLCFormer 10% OwnerBuy———
2022-09-16GSK, PLCFormer 10% OwnerBuy———
2022-09-16GSK, PLCFormer 10% OwnerBuy———
2022-09-16GSK, PLCFormer 10% OwnerBuy———
2022-09-16GSK, PLCFormer 10% OwnerBuy———
2022-09-16GSK, PLCFormer 10% OwnerBuy———
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerSale10,055,408——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerSale1,081,434——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerSale331,399——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerSale589,939——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerSale513,312——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerSale59,527——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerBuy635,646——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerBuy275,000$18.00$4.95M
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerBuy27,345——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerBuy14,917——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerBuy12,979——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerBuy8,380——
2021-07-02GLAXOSMITHKLINE, PLC10% OwnerBuy1,505——
2021-06-21GLAXOSMITHKLINE, PLC10% OwnerSale30,253,189——
2021-06-21GLAXOSMITHKLINE, PLC10% OwnerBuy30,253,189——
2021-05-20GLAXOSMITHKLINE, PLC10% OwnerSale32,005,260$12.25$392.06M
2021-02-17GLAXOSMITHKLINE, PLCDirectorSale1,737,619——
2021-02-17GLAXOSMITHKLINE, PLCDirectorSale3,125,000——
2021-02-17GLAXOSMITHKLINE, PLCDirectorSale7,119,850——
2021-02-17GLAXOSMITHKLINE, PLCDirectorBuy458,487——
2021-02-17GLAXOSMITHKLINE, PLCDirectorBuy327,852——
2021-02-17GLAXOSMITHKLINE, PLCDirectorBuy247,324——
2021-02-17GLAXOSMITHKLINE, PLCDirectorBuy150,000$18.00$2.70M
2020-07-24GLAXOSMITHKLINE, PLC10% OwnerBuy1,260,504$0.13$157563.00
2020-07-24GLAXOSMITHKLINE, PLC10% OwnerBuy1,260,504$2.25$2.84M
2020-07-21GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale1,776,980——
2020-07-21GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale7,846,554——
2020-07-21GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy1,538,724——
2020-07-21GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy361,111$18.00$6.50M
2020-07-21GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy348,469——
2020-07-17GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy13,997——
2020-07-15GLAXOSMITHKLINE, PLC10% OwnerSale3,069$19.40$59543.51
2020-07-15GLAXOSMITHKLINE, PLC10% OwnerSale78$19.25$1501.50
2020-07-14GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy10,700——
2020-07-14GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale6,337,403——
2020-07-14GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale1,994,348——
2020-07-14GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale292,663——
2020-07-14GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy1,712,810——
2020-07-14GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy833,333$18.00$15.00M
2020-07-14GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy525,499——
2020-07-14GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy79,090——
2020-07-14GLAXOSMITHKLINE, PLC10% OwnerSale1,597$19.27$30780.58
2020-06-22GLAXOSMITHKLINE, PLC10% OwnerSale———
2020-06-22GLAXOSMITHKLINE, PLC10% OwnerSale———
2020-06-22GLAXOSMITHKLINE, PLC10% OwnerSale———
2020-06-22GLAXOSMITHKLINE, PLC10% OwnerSale———
2020-06-22GLAXOSMITHKLINE, PLC10% OwnerSale———
2020-06-22GLAXOSMITHKLINE, PLC10% OwnerSale———
2020-06-22GLAXOSMITHKLINE, PLC10% OwnerSale———
2020-06-22GLAXOSMITHKLINE, PLC10% OwnerSale———
2020-05-21GLAXOSMITHKLINE, PLCDirectorBuy83,333$60.00$5.00M
2020-05-20GLAXOSMITHKLINE, PLC10% OwnerSale4,000,000$25.75$103.00M
2019-10-29GLAXOSMITHKLINE, PLC10% OwnerSale9,821,190——
2019-10-29GLAXOSMITHKLINE, PLC10% OwnerBuy9,821,190——
2019-10-18GLAXOSMITHKLINE, PLCFormer 10% OwnerBuy357,142$28.00$10.00M
2019-09-10GLAXOSMITHKLINE, PLCDirectorBuy177,777$45.00$8.00M
2019-07-22GLAXOSMITHKLINE, PLC10% OwnerSale12,500,000——
2019-07-22GLAXOSMITHKLINE, PLC10% OwnerBuy1,785,714——
2019-07-01GLAXOSMITHKLINE, PLCDirectorSale830,489——
2019-07-01GLAXOSMITHKLINE, PLCDirectorSale1,469,950——
2019-07-01GLAXOSMITHKLINE, PLCDirectorBuy1,469,950——
2019-07-01GLAXOSMITHKLINE, PLCDirectorBuy830,489——
2019-07-01GLAXOSMITHKLINE, PLCDirectorBuy333,333$15.00$5.00M
2019-06-24GLAXOSMITHKLINE, PLC10% OwnerBuy1,857,142$3.50$6.50M
2019-06-11GLAXOSMITHKLINE, PLC10% OwnerBuy10,240——
2019-05-28GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale445,323——
2019-05-28GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale625,049——
2019-05-28GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy893,195——
2019-05-28GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy636,366——
2019-05-28GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy385,714$14.00$5.40M
2019-04-22GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale2,105,259——
2019-04-22GLAXOSMITHKLINE, PLCDirector, 10% OwnerSale4,314,809——
2019-04-22GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy15,000——
2019-04-22GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy1,120,730——
2019-04-22GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy546,820——
2019-04-22GLAXOSMITHKLINE, PLCDirector, 10% OwnerBuy325,000$18.00$5.85M
2018-10-16GLAXOSMITHKLINE, PLCFormer 10% holderSale7,343,492$11.69$85.85M
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerSale1,521,895——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerSale4,942,070——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerSale2,367,424——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerSale2,840,909——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerSale9,726,783——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerBuy1,070,771——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerBuy544,047——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerBuy312,741——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerBuy270,000$17.00$4.59M
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerBuy260,617——
2018-09-18GLAXOSMITHKLINE, PLC10% OwnerBuy167,537——

Frequently asked questions

Are GSK insiders buying or selling?

Over the transactions on record, GSK insiders have been net buyers, with about $675.04M in stock sold across 43 sales, against 17 open-market purchases.

Does insider selling at GSK mean the stock will fall?

Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.

Which GSK insiders are selling the most?

Recent selling is concentrated in a few names. GLAXOSMITHKLINE, PLC accounts for the largest share on record, with about $581.00M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.