Tananbaum James B.

Director at ALUMIS INC. · on record since Apr 3, 2026
10% owner at ALUMIS INC. · on record since Apr 3, 2026
10% owner at AMBIT BIOSCIENCES CORP · on record since Oct 16, 2013
Director at Quantum-Si Inc · on record since Jun 14, 2021
10% owner at Aimmune Therapeutics, Inc. · on record since Aug 26, 2015
10% owner at Intellia Therapeutics, Inc. · on record since May 5, 2016
10% owner at AERIE PHARMACEUTICALS INC · on record since Jul 26, 2016
Director at Latigo Biotherapeutics, Inc. · on record since Aug 6, 2026
10% owner at Latigo Biotherapeutics, Inc. · on record since Aug 6, 2026
10% owner at 10x Genomics, Inc. · on record since Sep 16, 2019
Director at Disc Medicine, Inc. · on record since Aug 19, 2020
10% owner at Disc Medicine, Inc. · on record since Aug 19, 2020
President & CEO at Disc Medicine, Inc. · on record since Aug 11, 2020
Director at Kinnate Biopharma Inc. · on record since Dec 9, 2020
10% owner at Kinnate Biopharma Inc. · on record since Dec 9, 2020
Director at PARDES BIOSCIENCES, INC. · on record since Feb 23, 2021
President and CEO at PARDES BIOSCIENCES, INC. · on record since Feb 16, 2021
10% owner at Aclaris Therapeutics, Inc. · on record since Feb 10, 2021
10% owner at · on record since Jun 13, 2022
10% owner at · on record since Feb 23, 2021

Insider trading activity of Tananbaum James B.

Transactions on record: 118; since Jun 2, 2016

Open-market buys: 27; $99.4M

Open-market sells: 6; $6.8M

Companies traded: 9; last filing Aug 10, 2026

Figures computed from official regulatory filings — .

Companies where Tananbaum James B. has traded

15 tx · $2.5M · Aug 10, 2026
45 tx · $50.8M · Apr 3, 2026
25 tx · $25M · Apr 5, 2024
4 tx · $1.7M · Jun 2, 2023
2 tx · Nov 3, 2021
5 tx · $19.4M · Oct 6, 2021
7 tx · $25M · Jun 14, 2021
13 tx · $18.9M · Dec 23, 2019
2 tx · $3.7M · Jun 2, 2016

Track record of Tananbaum James B.

Statistical track record

Free account

Open-market buys: 27

Last buy: Aug 10, 2026

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

Transaction history of Tananbaum James B.

Co-insiders of Tananbaum James B.

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-3,117,664	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	3,117,664	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-195,776	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	195,776	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-296,880	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	296,880	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	1,125,823	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-742,201	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	742,201	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-1,125,823	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-445,320	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	445,320	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Buy	140,000	18.00 USD	$2.5M	conv 27	SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-3,117,664	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	3,117,664	—	n/a (No price was disclosed in the filing)		SEC
ALUMIS INC.Listing unverified	Apr 3, 2026	Other	1,123,337	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALUMIS INC.Listing unverified	Apr 3, 2026	Other	-1,123,337	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALUMIS INC.Listing unverified	Apr 3, 2026	Other	-1,176,470	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALUMIS INC.Listing unverified	Apr 3, 2026	Other	680,486	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALUMIS INC.Listing unverified	Jan 12, 2026	Buy	294,117	17.00 USD	$5M	conv 39Cluster	SEC
ALUMIS INC.Listing unverified	Jan 12, 2026	Buy	117,647	17.00 USD	$2M	conv 35Cluster	SEC
ALUMIS INC.Listing unverified	Nov 25, 2025	Buy	72,212	7.38 USD	$532.9K	conv 34Cluster	SEC
ALUMIS INC.Listing unverified	Nov 19, 2025	Buy	50,000	5.60 USD	$280K	conv 39Cluster	SEC
ALUMIS INC.Listing unverified	Nov 19, 2025	Buy	150,000	5.59 USD	$838.5K	conv 41Cluster	SEC
ALUMIS INC.Listing unverified	Nov 19, 2025	Buy	190,500	6.56 USD	$1.2M	conv 35Cluster	SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-3,117,664	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	3,117,664	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-195,776	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	195,776	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-296,880	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	296,880	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	1,125,823	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-742,201	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	742,201	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-1,125,823	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-445,320	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	445,320	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Buy	140,000	18.00 USD	$2.5M	conv 27	SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	OtherD (derivative)	-3,117,664	—	n/a (No price was disclosed in the filing)		SEC
Latigo Biotherapeutics, Inc.Listing unverified	Aug 10, 2026	Other	3,117,664	—	n/a (No price was disclosed in the filing)		SEC
ALUMIS INC.Listing unverified	Apr 3, 2026	Other	1,123,337	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALUMIS INC.Listing unverified	Apr 3, 2026	Other	-1,123,337	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALUMIS INC.Listing unverified	Apr 3, 2026	Other	-1,176,470	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALUMIS INC.Listing unverified	Apr 3, 2026	Other	680,486	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ALUMIS INC.Listing unverified	Jan 12, 2026	Buy	294,117	17.00 USD	$5M	conv 39Cluster	SEC
ALUMIS INC.Listing unverified	Jan 12, 2026	Buy	117,647	17.00 USD	$2M	conv 35Cluster	SEC
ALUMIS INC.Listing unverified	Nov 25, 2025	Buy	72,212	7.38 USD	$532.9K	conv 34Cluster	SEC
ALUMIS INC.Listing unverified	Nov 19, 2025	Buy	50,000	5.60 USD	$280K	conv 39Cluster	SEC
ALUMIS INC.Listing unverified	Nov 19, 2025	Buy	150,000	5.59 USD	$838.5K	conv 41Cluster	SEC
ALUMIS INC.Listing unverified	Nov 19, 2025	Buy	190,500	6.56 USD	$1.2M	conv 35Cluster	SEC