Topper James N

Director at LA JOLLA PHARMACEUTICAL CO · on record since Feb 14, 2006
Director at NewAmsterdam Pharma Co N.V. · on record since Dec 29, 2023
Director at Phathom Pharmaceuticals, Inc. · on record since May 21, 2026
10% owner at Phathom Pharmaceuticals, Inc. · on record since May 21, 2026
Director at ANAPTYSBIO, INC · on record since Jan 31, 2017
10% owner at ANAPTYSBIO, INC · on record since Jan 31, 2017
Director at AMICUS THERAPEUTICS, INC. · on record since May 30, 2007
10% owner at AMICUS THERAPEUTICS, INC. · on record since May 30, 2007
10% owner at MBX Biosciences, Inc. · on record since Sep 17, 2024
Director at PORTOLA PHARMACEUTICALS INC · on record since May 30, 2013
10% owner at GLAUKOS Corp · on record since Jun 30, 2015
10% owner at COLLEGIUM PHARMACEUTICAL, INC · on record since May 14, 2015
Director at Sierra Oncology, Inc. · on record since Jul 21, 2015
Director at Attovia Therapeutics, Inc. · on record since Aug 4, 2026
10% owner at Sierra Oncology, Inc. · on record since Feb 16, 2017
Director at ALPINE AIR EXPRESS INC/DE · on record since Jul 26, 2017
10% owner at ALPINE AIR EXPRESS INC/DE · on record since Jul 26, 2017
Director at Allena Pharmaceuticals, Inc. · on record since Nov 6, 2017
10% owner at · on record since Nov 6, 2017
Director at · on record since Jun 26, 2018
10% owner at · on record since Jun 26, 2018
Director at · on record since Sep 25, 2018
10% owner at · on record since Sep 25, 2018
10% owner at · on record since Jul 24, 2019
10% owner at · on record since Jan 31, 2020
10% owner at · on record since Feb 27, 2020
10% owner at · on record since Oct 20, 2020
Director at · on record since Dec 17, 2020
Chief Executive Officer at · on record since Dec 17, 2020
10% owner at · on record since Apr 28, 2022

Insider trading activity of Topper James N

Transactions on record: 1,057; since Dec 14, 2005

Open-market buys: 909; $127.3M

Open-market sells: 4; $370.2K

Companies traded: 15; last filing May 21, 2026

Figures computed from official regulatory filings — .

Companies where Topper James N has traded

15 tx · $191.9K · May 21, 2026
5 tx · $83.9M · Sep 17, 2025
9 tx · $586.2K · Sep 17, 2025
25 tx · $3.9M · May 20, 2024
27 tx · $6M · Jan 10, 2023
3 tx · May 12, 2021
10 tx · $7M · Nov 18, 2020
13 tx · $2.5M · Apr 2, 2020
3 tx · $6.8M · Jul 24, 2019
8 tx · $5.6M · Jan 22, 2019
6 tx · $12.2M · Feb 16, 2017
9 tx · $1.8M · May 14, 2015
902 tx · $33.2M · Jun 16, 2014
11 tx · Jun 7, 2013

Track record of Topper James N

Statistical track record

Free account

Open-market buys: 911

Last buy: Sep 15, 2025

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of Topper James N

Co-insiders of Topper James N

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Phathom Pharmaceuticals, Inc.Listing on record	May 21, 2026	Award	24,122	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HilleVax, Inc.Listing unverified	Sep 17, 2025	Other	-17,199	1.95 USD	$33.5K		SEC
HilleVax, Inc.Listing unverified	Sep 17, 2025	Other	-8,535,337	1.95 USD	$16.6M		SEC
NewAmsterdam Pharma Co N.V.Listing on record	Sep 17, 2025	Buy	660	23.70 USD	$15.6K	conv 21	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Sep 10, 2025	Buy	1,260	24.99 USD	$31.5K	conv 22	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Aug 13, 2025	Buy	471	23.98 USD	$11.3K	conv 22	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Jun 26, 2025	Buy	2,520	18.43 USD	$46.4K	conv 28	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Jun 26, 2025	Buy	1,260	18.26 USD	$23K	conv 28	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Jun 18, 2025	Buy	8,584	19.50 USD	$167.4K	conv 27	SEC
Phathom Pharmaceuticals, Inc.Listing on record	Jun 5, 2025	Award	10,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Phathom Pharmaceuticals, Inc.Listing on record	Jun 5, 2025	AwardD (derivative)	17,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 23, 2025	Buy	3,780	3.86 USD	$14.6K	conv 31	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 15, 2025	Buy	1,120	3.16 USD	$3.5K	conv 30	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 15, 2025	Buy	6,300	3.32 USD	$20.9K	conv 33	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 13, 2025	Buy	12,601	3.04 USD	$38.3K	conv 39	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 13, 2025	Buy	2,226	3.62 USD	$8.1K	conv 32	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 13, 2025	Buy	33,376	3.19 USD	$106.5K	conv 40	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Mar 28, 2025	Buy	1,135	22.49 USD	$25.5K	conv 25	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Mar 6, 2025	Buy	4,005	21.02 USD	$84.2K	conv 27	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 24, 2024	Award	10,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 24, 2024	AwardD (derivative)	-17,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALPINE AIR EXPRESS INC/DEListing unverified	May 20, 2024	OtherD (derivative)	-17,500	—	n/a (No price was disclosed in the filing)		SEC
ALPINE AIR EXPRESS INC/DEListing unverified	May 20, 2024	OtherD (derivative)	-10,000	—	n/a (No price was disclosed in the filing)		SEC
ALPINE AIR EXPRESS INC/DEListing unverified	May 20, 2024	Other	-2,829,347	—	n/a (No price was disclosed in the filing)		SEC
ALPINE AIR EXPRESS INC/DEListing unverified	May 20, 2024	OtherD (derivative)	-7,650	—	n/a (No price was disclosed in the filing)		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Phathom Pharmaceuticals, Inc.Listing on record	May 21, 2026	Award	24,122	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HilleVax, Inc.Listing unverified	Sep 17, 2025	Other	-17,199	1.95 USD	$33.5K		SEC
HilleVax, Inc.Listing unverified	Sep 17, 2025	Other	-8,535,337	1.95 USD	$16.6M		SEC
NewAmsterdam Pharma Co N.V.Listing on record	Sep 17, 2025	Buy	660	23.70 USD	$15.6K	conv 21	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Sep 10, 2025	Buy	1,260	24.99 USD	$31.5K	conv 22	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Aug 13, 2025	Buy	471	23.98 USD	$11.3K	conv 22	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Jun 26, 2025	Buy	2,520	18.43 USD	$46.4K	conv 28	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Jun 26, 2025	Buy	1,260	18.26 USD	$23K	conv 28	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Jun 18, 2025	Buy	8,584	19.50 USD	$167.4K	conv 27	SEC
Phathom Pharmaceuticals, Inc.Listing on record	Jun 5, 2025	Award	10,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Phathom Pharmaceuticals, Inc.Listing on record	Jun 5, 2025	AwardD (derivative)	17,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 23, 2025	Buy	3,780	3.86 USD	$14.6K	conv 31	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 15, 2025	Buy	1,120	3.16 USD	$3.5K	conv 30	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 15, 2025	Buy	6,300	3.32 USD	$20.9K	conv 33	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 13, 2025	Buy	12,601	3.04 USD	$38.3K	conv 39	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 13, 2025	Buy	2,226	3.62 USD	$8.1K	conv 32	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 13, 2025	Buy	33,376	3.19 USD	$106.5K	conv 40	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Mar 28, 2025	Buy	1,135	22.49 USD	$25.5K	conv 25	SEC
NewAmsterdam Pharma Co N.V.Listing on record	Mar 6, 2025	Buy	4,005	21.02 USD	$84.2K	conv 27	SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 24, 2024	Award	10,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Phathom Pharmaceuticals, Inc.Listing on record	May 24, 2024	AwardD (derivative)	-17,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALPINE AIR EXPRESS INC/DEListing unverified	May 20, 2024	OtherD (derivative)	-17,500	—	n/a (No price was disclosed in the filing)		SEC
ALPINE AIR EXPRESS INC/DEListing unverified	May 20, 2024	OtherD (derivative)	-10,000	—	n/a (No price was disclosed in the filing)		SEC
ALPINE AIR EXPRESS INC/DEListing unverified	May 20, 2024	Other	-2,829,347	—	n/a (No price was disclosed in the filing)		SEC
ALPINE AIR EXPRESS INC/DEListing unverified	May 20, 2024	OtherD (derivative)	-7,650	—	n/a (No price was disclosed in the filing)		SEC