Updated: May 19, 2026

Steven Gillis

LYELLyell Immunopharma, Inc.SEC CIK: 0001229592
Estimated Net Worth
$188 Million
Last Updated: May 19, 2026 11:11 PM EST

Transaction Summary

Total Transactions117
Buy-Sell Ratio9.00
Buy Transactions27
Sell Transactions3

Transaction Volume

Total Volume$137.73M
Net Volume$156.34M
Buy Volume$147.04M
Sell Volume-$9.31M

Trade Analysis

AVG Trade Size$1.20M
Largest Trade$40.00M
Most Active MonthJun
Most Active Year2023

Trading Sentiment

OverallBullish
Recent TradeBuying
Last 90 Days+1 Trades
ConvictionMedium

Net Worth & Trading Activity Over Time

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Monthly Trading Pattern

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Past Insider Trading and Trends

Steven Gillis has an estimated net worth of $188 Million. This is based on reported shares across multiple companies, which include Sana Biotechnology, Inc., PHASERX, INC., Neumora Therapeutics, Inc., Erasca, Inc., Pulmatrix, Inc., Verve Therapeutics, Inc., Sienna Biopharmaceuticals, Inc., Prime Medicine, Inc., Boundless Bio, Inc., Rapport Therapeutics, Inc., Metsera, Inc., Maze Therapeutics, Inc., Lyell Immunopharma, Inc., Seaport Therapeutics, Inc., DA32 Life Science Tech Acquisition Corp., VBI VACCINES INC., Trubion Pharmaceuticals, Inc, VBI Vaccines Inc/BC, bluebird bio, Inc., Codiak BioSciences, Inc., Homology Medicines, Inc., CORIXA CORP, and TAKEDA PHARMACEUTICAL CO LTD.



2023 was Steven Gillis's most active year for acquiring shares with 31 total transactions. Steven Gillis's most active month to acquire stocks was the month of May. 2005 was Steven Gillis's most active year for disposing of shares, totalling 22 transactions. Steven Gillis's most active month to dispose stocks was the month of June. 2025 saw Steven Gillis paying a total of $54,999,963.00 for 30,698,853 shares, this is the most they've acquired in one year. In 2014 Steven Gillis cashed out on 752,477 shares for a total of $9,305,060.48, their largest year based on trade value.

Holdings & Transactions

LYELlyell immunopharma, inc.
Updated: Mar 09, 2026VIEW QUOTE
Form TypeSEC Filing
0.52488.09K$25.61$12.50M3.25MMar 06View
938.44KView
SPTXseaport therapeutics, inc.
Updated: May 04, 2026VIEW QUOTE
Form TypeSEC Filing
0.211.10M$18.006.29MMay 04View
View
TAKtakeda pharmaceutical co ltd
Updated: Mar 18, 2026VIEW QUOTE
Form TypeSEC Filing
25.56KView
NMRAneumora therapeutics, inc.
Updated: Oct 29, 2025VIEW QUOTE
Form TypeSEC Filing
0.461.92M$2.61$5.00M33.85MOct 27View
1.031.88M31.93MDec 08View
0.0135.01K$11.77$412.14K4.13MNov 13 - 14View
0.04140.60K$10.98$1.54M4.10MNov 08 - 10View
0.0295.69K$11.49$1.10M3.96MNov 03 - 07View
0.0276.51K$13.68$1.05M3.86MSep 28 - 29View
0.0258.50K$11.97$700.46K3.78MSep 26 - 27View
0.03100.74K$11.19$1.13M3.72MSep 22 - 25View
0.051.50M$17.0029.55MSep 19View
10.62MView
PRMEprime medicine, inc.
Updated: Aug 01, 2025VIEW QUOTE
Form TypeSEC Filing
0.953.03M$3.30$10.00M18.49MAug 01View
3.20M$6.25$20.00M15.46MFeb 15View
-0.6623.36M$17.0012.26MOct 24View
View
MTSRmetsera, inc.
Updated: Nov 14, 2025VIEW QUOTE
Form TypeSEC Filing
-1.0026.82MNov 13View
-0.3629.54M$18.00$40.00M51.41MFeb 03View
1.06MView
MAZEmaze therapeutics, inc.
Updated: Jan 30, 2025VIEW QUOTE
Form TypeSEC Filing
View
SANAsana biotechnology, inc.
Updated: Feb 12, 2024VIEW QUOTE
Form TypeSEC Filing
0.051.82M$5.50$10.00M45.86MFeb 08View
44.04MFeb 08View
292.50KView
boundless bio, inc.
Updated: Apr 04, 2024
Form TypeSEC Filing
0.05200.00K$16.00$3.20M4.36MApr 02View
68.37KView
rapport therapeutics, inc.
Updated: Jun 10, 2024
Form TypeSEC Filing
-0.8828.20M3.73MJun 10View
View
da32 life science tech acquisition corp.
Updated: Aug 10, 2023
Form TypeSEC Filing
-1.001.60M650.00KJul 28View
-0.14701.25K4.47MAug 05View
1.412.25M$10.00$22.50M3.85MJul 30View
View
VBIVvbi vaccines inc/bc
Updated: Jul 28, 2023VIEW QUOTE
Form TypeSEC Filing
52.50K52.50KJul 27View
$1.65$1.00M1.66MJul 10View
75.00K75.00KJan 26View
100.00K100.00KJan 27View
100.00K100.00KJan 27View
350.00K350.00KJan 22View
3.11MJun 14View
300.00K300.00KJan 31View
3.11MJun 14View
100.00K100.00KJan 23View
0.11300.00K$3.05$915.00K3.07MOct 30View
2.81MJun 14View
0.5315.00K$2.502.77MJan 17 - 29View
2.75MView
CDAKQcodiak biosciences, inc.
Updated: Feb 21, 2023VIEW QUOTE
Form TypeSEC Filing
8.75KFeb 16View
3.9910.00M12.51MSep 13View
9.00K9.00KJun 17View
8.75K8.75KFeb 16View
10.00K10.00KJun 18View
-0.8514.51M$15.002.50MOct 16View
10.00K10.00KOct 13View
63.96KView
FIXXhomology medicines, inc.
Updated: Jun 15, 2023VIEW QUOTE
Form TypeSEC Filing
23.00K23.00KJun 14View
18.00K18.00KJun 15View
18.00K18.00KJun 17View
18.00K18.00KJun 10View
15.58K15.58KJun 06View
6.07MApr 02View
31.16K31.16KMar 27View
View
ERASerasca, inc.
Updated: Jul 20, 2021VIEW QUOTE
Form TypeSEC Filing
-0.172.21M11.06MJul 20View
View
VERVverve therapeutics, inc.
Updated: Jun 23, 2021VIEW QUOTE
Form TypeSEC Filing
-0.8920.72M2.51MJun 21View
View
PULMpulmatrix, inc.
Updated: Sep 01, 2020VIEW QUOTE
Form TypeSEC Filing
55.60KAug 28View
10.00K10.00KApr 02View
15.00K15.00KJan 09View
15.00K15.00KMay 16View
124.00K124.00KJun 05View
1.513.45M5.74MApr 03View
4.40K4.40KMar 20View
8.80K8.80KFeb 03View
1.11K1.11KJun 24View
797.51K797.51KJun 15View
3.10M$6.883.10MJun 15 - 16View
View
sienna biopharmaceuticals, inc.
Updated: Feb 26, 2019
Form TypeSEC Filing
0.602.17M$2.50$5.41M5.80MFeb 22View
vbi vaccines inc.
Updated: Sep 23, 2019
Form TypeSEC Filing
3.3010.00M$0.50$5.00M13.11MSep 19View
0.19650.00K$2.10$1.37M4.05MAug 13View
From 3/A3.40MView
0.5870.00K191.09KJul 30View
3.40MView
phaserx, inc.
Updated: May 30, 2017
Form TypeSEC Filing
14.00K14.00KMay 25View
31.02K31.02KJun 01View
0.13329.33K$2.51$4.99M2.87MMay 23View
From 3/A2.53MView
2.49MView
BLUEbluebird bio, inc.
Updated: Jul 30, 2015VIEW QUOTE
Form TypeSEC Filing
-0.68227.87K109.31KJul 28View
-0.61526.24K337.18KJun 25View
7.50K7.50KJun 04View
-0.17178.91K863.42KJan 30View
-0.10115.00K$35.25-$4.05M1.04MOct 09View
-0.0557.44K$35.43-$2.03M1.16MOct 03 - 07View
-0.0791.17K$35.28-$3.22M1.21MSep 30 - 02View
-0.19313.09K1.31MSep 08View
7.50K7.50KJun 11View
-0.10174.56K1.62MJan 23View
-0.9532.23M1.79MJun 24View
View
trubion pharmaceuticals, inc
Ex. Chair. & President Director
Updated: Oct 28, 2010
Form TypeSEC Filing
-1.002.48MOct 28View
90.00K2.45MNov 16View
30.00K2.39MMay 27View
5.00K2.36MMay 28View
5.00K5.00KMay 25View
From 3/A23.92KView
From 3/A23.92KView
2.31MOct 23View
1.8744.64K$13.00$580.32K68.56KOct 18View
23.92KView
corixa corp
CEO Director
Updated: Jul 14, 2005
Form TypeSEC Filing
-0.71722.08K$4.20-$345.28KDec 31 - 12View
0.44151.34K$1.30$597.50K498.16KJun 30 - 31View
90.00K$6.04$543.60K400.46KDec 31View
$0.33308.06KDec 18View