Arkolith/Insider Trading/GEMP

GEMP Insider Trading

Gemphire Therapeutics Inc. · full profile →Last filing Jun 8, 2026

Gemphire Therapeutics Inc. also files under MTVA, NRBO; those filings are included.

Mixed · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$0
0 insiders
Net Insider Flow
$0
open market, 180d
Reporting Insiders
0
0 P/S transactions
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Build on these Form 4 transactions

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Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jun 8, 2026Salsbury MichaelDirectorGrant(A)17K—$0
Jun 8, 2026Tursi James PatrickDirectorGrant(A)17K—$0
Jun 8, 2026Glickman Mark ADirectorGrant(A)17K—$0
Jun 8, 2026Groves Jason LDirectorGrant(A)17K—$0
Jun 8, 2026Koven Andrew IDirectorGrant(A)17K—$0
Jun 8, 2026Strickland D GordonDirectorGrant(A)17K—$0
Jan 23, 2026Kim Hyung HeonCEO & President, DirectorGrant(A)32K—$0
Jan 23, 2026Woodworth Marshall HChief Financial OfficerGrant(A)28K—$0
Aug 12, 2025Woodworth Marshall HChief Financial OfficerGift(G)14K—$0
Jun 30, 2025Strickland D GordonDirectorGrant(A)28K—$0
Jun 30, 2025Salsbury MichaelDirectorGrant(A)28K—$0
Jun 30, 2025Koven Andrew IDirectorGrant(A)28K—$0
Jun 30, 2025Tursi James PatrickDirectorGrant(A)28K—$0
Jun 30, 2025Groves Jason LDirectorGrant(A)28K—$0
Jun 30, 2025Glickman Mark ADirectorGrant(A)28K—$0
Jun 4, 2025Woodworth Marshall HChief Financial OfficerBuy(P)14K$0.70$10K
May 8, 2025Dong-A ST Co., Ltd10% OwnerBuy(P)4.6M$0.71$3.3M
Mar 1, 2025Kim Hyung HeonCEO & President, DirectorTax withholding(F)3K$1.46$4K
Mar 1, 2025Woodworth Marshall HChief Financial OfficerTax withholding(F)3K$1.46$5K
Nov 30, 2024Kim Hyung HeonCEO & President, DirectorTax withholding(F)3K$2.55$7K
Sep 18, 2024Dong-A ST Co., Ltd10% OwnerBuy(P)2.5M——
Sep 18, 2024Dong-A ST Co., Ltd10% OwnerBuy(P)3.8M——
Sep 12, 2024Dong-A ST Co., Ltd10% OwnerSell(S)407$3.75$2K
Aug 11, 2024Kim Hyung HeonCEO & President, DirectorTax withholding(F)11K$3.60$41K
Jun 23, 2024Dong-A ST Co., Ltd10% OwnerBuy(P)2.5M$3.93$10.0M
Jun 7, 2024Tursi James PatrickDirectorGrant(A)5K—$0
Jun 7, 2024Strickland D GordonDirectorGrant(A)5K—$0
Jun 7, 2024Glickman Mark ADirectorGrant(A)5K—$0
Jun 7, 2024Koven Andrew IDirectorGrant(A)5K—$0
Jun 7, 2024Groves Jason LDirectorGrant(A)5K—$0
Jun 7, 2024Salsbury MichaelDirectorGrant(A)5K—$0
Mar 1, 2024Woodworth Marshall HChief Financial OfficerGrant(A)33K—$0
Dec 1, 2023Tursi James PatrickDirectorGrant(A)25K—$0
Dec 1, 2023Tursi James PatrickDirectorGrant(A)7K—$0
Aug 11, 2023Kim Hyung HeonCEO & President, DirectorGrant(A)625K—$0
Jul 27, 2023Kim Na YeonDirector, 10% OwnerGrant(A)13K—$0
Jul 27, 2023Kim Na YeonDirector, 10% OwnerGrant(A)88K—$0
Jul 27, 2023Glickman Mark ADirectorGrant(A)13K—$0
Jul 27, 2023Glickman Mark ADirectorGrant(A)25K—$0
Jul 27, 2023Groves Jason LDirectorGrant(A)13K—$0
Jul 27, 2023Groves Jason LDirectorGrant(A)88K—$0
Jul 27, 2023Strickland D GordonDirectorGrant(A)13K—$0
Jul 27, 2023Strickland D GordonDirectorGrant(A)88K—$0
Jul 27, 2023Salsbury MichaelDirectorGrant(A)88K—$0
Jul 27, 2023Salsbury MichaelDirectorGrant(A)13K—$0
Jul 27, 2023Koven Andrew IDirectorGrant(A)88K—$0
Jul 27, 2023Koven Andrew IDirectorGrant(A)13K—$0
Jul 26, 2022Kim Na YeonDirector, 10% OwnerOther(J)5K—$0
Jul 26, 2022E&Healthcare Investment Fund II10% OwnerOther(J)1.4M—$0
Jun 9, 2022Kim Na YeonDirector, 10% OwnerGrant(A)20K—$0
Jun 9, 2022Salsbury MichaelDirectorGrant(A)20K—$0
Jun 9, 2022Strickland D GordonDirectorGrant(A)20K—$0
Jun 9, 2022Kang RichardDirectorGrant(A)20K—$0
Jun 9, 2022Koven Andrew IDirectorGrant(A)20K—$0
Jun 9, 2022Kim Hyung HeonDirectorGrant(A)20K—$0
Jun 9, 2022Groves Jason LDirectorGrant(A)20K—$0
Jan 27, 2022Strickland D GordonDirectorGrant(A)40K—$0
Nov 3, 2021Price Ben GilCEO and PresidentGrant(A)617K—$0
Sep 2, 2021Koven Andrew IDirectorGrant(A)60K—$0
Dec 31, 2020Bakshi AkashSVP and COO, DirectorGrant(A)29K——
Dec 31, 2020Bakshi AkashSVP and COO, DirectorGrant(A)855K——
Sep 1, 2020Swirsky Douglas JDirectorGrant(A)60K—$0
Jan 13, 2020Groves Jason LDirectorGrant(A)60K—$0
Jan 13, 2020Gullans Steven R. Ph.D.DirectorGrant(A)60K—$0
Jan 13, 2020Jeong Tae HeumDirectorGrant(A)60K—$0
Jan 13, 2020Kim Na YeonDirector, 10% OwnerGrant(A)60K—$0
Jan 13, 2020Oh Jeong GyunDirector, 10% OwnerGrant(A)60K—$0
Jan 13, 2020Salsbury MichaelDirectorGrant(A)60K—$0
Dec 30, 2019Oh Jeong GyunDirector, 10% OwnerGrant(A)1.8M——
Dec 30, 2019Kim Na YeonDirector, 10% OwnerGrant(A)1.9M——
Dec 30, 2019Kim Na YeonDirector, 10% OwnerGrant(A)4.3M——
Dec 30, 2019Kim Na YeonDirector, 10% OwnerGrant(A)1.1M——
Dec 30, 2019Oh Jeong GyunDirector, 10% OwnerGrant(A)240K——
Dec 30, 2019Versavel MarkChief Medical OfficerGrant(A)46K——
Dec 30, 2019Versavel MarkChief Medical OfficerGrant(A)297K——
Jul 24, 2019Gullans Steven R. Ph.D.President & CEO, DirectorGrant(A)300K—$0
Jul 24, 2019Bisgaier Charles PhDChief Scientific Off. & Chair, Director, 10% OwnerGrant(A)100K—$0
Jul 24, 2019Reno SethChief Commercial OfficerGrant(A)100K—$0
Jul 24, 2019Kousky Kenneth WDirectorGrant(A)15K—$0
Jul 24, 2019Lichtinger PedroDirectorGrant(A)15K—$0
Jul 24, 2019Sassine AndyDirectorGrant(A)15K—$0
May 22, 2018Gullans Steven R. Ph.D.President & CEO, DirectorGrant(A)50K—$0
May 22, 2018Gullans Steven R. Ph.D.President & CEO, DirectorGrant(A)50K—$0
May 1, 2018Gullans Steven R. Ph.D.President & CEO, DirectorGrant(A)150K—$0
Feb 8, 2018Gullans Steven R. Ph.D.Interim President & CEO, DirectorBuy(P)71K$7.00$500K
Feb 8, 2018Reno SethChief Commercial OfficerBuy(P)14K$7.00$100K
Jan 29, 2018Kousky Kenneth WDirectorGrant(A)11K—$0
Jan 29, 2018Gullans Steven R. Ph.D.Interim President & CEO, DirectorGrant(A)60K—$0
Jan 29, 2018Sassine AndyDirectorGrant(A)11K—$0
Jan 29, 2018Hawryluk P. KentDirectorGrant(A)11K—$0
Jan 29, 2018Lichtinger PedroDirectorGrant(A)11K—$0
Jan 28, 2018Mathiesen Jeffrey SChief Financial OfficerGrant(A)48K—$0
Jan 28, 2018Reno SethChief Commercial OfficerGrant(A)48K—$0
Jan 28, 2018Golden Lee ScottChief Medical OfficerGrant(A)148K—$0
Jan 28, 2018Bisgaier Charles PhDChief Scien Officer & Chair, Director, 10% OwnerGrant(A)48K—$0
Aug 14, 2017Mathiesen Jeffrey SChief Financial OfficerOption exercise(M)3K—$0
Aug 14, 2017Mathiesen Jeffrey SChief Financial OfficerOption exercise(M)3K$3.59$12K
Aug 10, 2017Mathiesen Jeffrey SChief Financial OfficerOption exercise(M)3K—$0
Aug 10, 2017Mathiesen Jeffrey SChief Financial OfficerOption exercise(M)3K$3.59$11K
Jul 31, 2017Bisgaier Charles PhDChief Scientific Off. & Chair, Director, 10% OwnerOption exercise(M)4K—$0

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Issuer: Gemphire Therapeutics Inc., SEC CIK 0001638287. The symbol on a Form 4 is typed by the filer, so this page follows the issuer with the newest filing under GEMP and shows every filing by that issuer (also filed as MTVA, NRBO).

Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-15. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).

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