Nelson Chai Net Worth - Insider Trades and Bio as of Jun 5, 2026

TMOTHERMO FISHER SCIENTIFIC INC.SEC CIK: 0001299914

Estimated Net Worth

$66.3 Million

Last Updated: May 19, 2026 02:02 AM EST

Transaction Summary

Total Transactions140

Buy-Sell Ratio0.10

Buy Transactions2

Sell Transactions20

Transaction Volume

Total Volume-$13.96M

Net Volume$14.99M

Buy Volume$513.34K

Sell Volume-$14.47M

Trade Analysis

AVG Trade Size-$259.56K

Largest Trade$805.00K

Most Active MonthMay

Most Active Year2007

Trading Sentiment

OverallBullish

Recent TradeNeutral

Last 90 Days0 Trades

ConvictionNone

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Nelson Chai has an estimated net worth of $66.3 Million. This is based on reported shares across multiple companies, which include Uber Technologies, Inc, ARCHIPELAGO HOLDINGS L L C, NYSE Group, Inc., THERMO FISHER SCIENTIFIC INC., NYSE Euronext, Inc., MERRILL LYNCH & CO INC, CIT GROUP INC, and Chubb Ltd.

2023 was Nelson Chai's most active year for acquiring shares with 29 total transactions. Nelson Chai's most active month to acquire stocks was the month of February. 2007 was Nelson Chai's most active year for disposing of shares, totalling 417 transactions. Nelson Chai's most active month to dispose stocks was the month of February. 2004 saw Nelson Chai paying a total of $805,000.00 for 70,000 shares, this is the most they've acquired in one year. In 2023 Nelson Chai cashed out on 202,116 shares for a total of $5,864,873.00, their largest year based on trade value.

Holdings & Transactions

TMOthermo fisher scientific inc.

Updated: May 22, 2025VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.04	565.00	—	—	May 22, 2025	14.82K	Grant	—	May 21	View
From 4	0.00	4.00	$540.00	$2.59K	Feb 21, 2025	14.25K	Purchase	—	Nov 07 - 19	View
From 4	0.02	339.00	—	—	May 23, 2024	14.25K	Grant	—	May 22	View
From 4	0.03	392.00	—	—	May 26, 2023	13.91K	Grant	—	May 24	View
From 4	0.03	369.00	—	—	May 20, 2022	13.52K	Grant	—	May 18	View
From 4	0.03	438.00	—	—	May 20, 2021	13.15K	Grant	—	May 19	View
From 4	0.05	572.00	—	—	May 21, 2020	12.71K	Grant	—	May 20	View
From 4	0.06	718.00	—	—	May 23, 2019	12.14K	Grant	—	May 22	View
From 4	0.08	809.00	—	—	May 24, 2018	11.42K	Grant	—	May 23	View
From 4	0.11	1.02K	—	—	May 19, 2017	10.61K	Grant	—	May 17	View
From 4	0.12	1.00K	—	—	May 20, 2016	9.59K	Grant	—	May 18	View
From 4	0.15	1.14K	—	—	May 22, 2015	8.59K	Grant	—	May 20	View
From 4	0.21	1.31K	—	—	May 22, 2014	7.45K	Grant	—	May 20	View
From 4	0.40	1.74K	—	—	May 24, 2013	6.14K	Grant	—	May 22	View
From 4	1.26	2.45K	—	—	May 25, 2012	4.40K	Grant	—	May 23	View
From 4	—	1.95K	—	—	May 27, 2011	1.95K	Grant	—	May 25	View
From 3	—	—	—	—	Dec 15, 2010	—	—	—	—	View

CBchubb ltd

Updated: May 16, 2025VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.82	591.00	$292.05	-$52.57K	May 16, 2025	1.31K	Grant	—	May 15	View
From 4	—	718.00	—	—	May 17, 2024	718.00	Grant	—	May 16	View
From 3	—	—	—	—	May 16, 2024	—	—	—	—	View

UBERuber technologies, inc

Chief Financial Officer

Updated: Nov 09, 2023VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	—	—	—	—	Nov 09, 2023	—	—	—	—	View
From 4	-0.01	3.99K	$44.71	-$178.48K	Oct 18, 2023	552.41K	Options	—	Oct 16	View
From 4	-0.01	3.99K	$47.52	-$189.70K	Sep 19, 2023	556.40K	Options	—	Sep 16	View
From 4	-0.26	100.00K	$45.05	-$4.50M	Aug 22, 2023	291.81K	Sale	—	Aug 21	View
From 4	-0.01	3.99K	$43.65	-$174.25K	Aug 18, 2023	660.40K	Options	—	Aug 16	View
From 4	-0.01	3.99K	$44.75	-$178.64K	Jul 18, 2023	664.39K	Options	—	Jul 16	View
From 4	-0.01	3.99K	$43.52	-$173.73K	Jun 21, 2023	668.38K	Options	—	Jun 16	View
From 4	-0.01	3.99K	$37.44	-$149.46K	May 18, 2023	672.37K	Options	—	May 16	View
From 4	-0.01	3.99K	$31.48	-$125.67K	Apr 18, 2023	676.36K	Options	—	Apr 16	View
From 4	-0.00	2.32K	$32.73	-$75.93K	Mar 21, 2023	523.20K	Options	—	Mar 16	View
From 4	—	157.16K	—	—	Mar 03, 2023	157.16K	Grant	—	Mar 01	View
From 4	-0.00	1.64K	$36.22	-$59.33K	Feb 21, 2023	525.52K	Options	—	Feb 16	View
From 4	-0.00	1.86K	$29.44	-$54.91K	Jan 18, 2023	527.15K	Options	—	Jan 16	View
From 4	-0.00	2.32K	$25.97	-$60.25K	Dec 20, 2022	529.02K	Options	—	Dec 16	View
From 4	-0.00	2.32K	$30.04	-$69.69K	Nov 18, 2022	531.34K	Options	—	Nov 16	View
From 4	-0.00	2.32K	$24.71	-$57.33K	Oct 18, 2022	533.66K	Options	—	Oct 16	View
From 4	-0.00	2.32K	$31.93	-$74.08K	Sep 20, 2022	535.98K	Options	—	Sep 16	View
From 4	-0.01	2.62K	$28.92	-$75.77K	Sep 06, 2022	355.98K	Tax	—	Sep 01	View
From 4	-0.00	2.32K	$32.38	-$75.12K	Aug 18, 2022	540.92K	Options	—	Aug 16	View
From 4	-0.01	2.62K	$24.60	-$64.45K	Aug 03, 2022	356.38K	Tax	—	Aug 01	View
From 4	-0.00	2.32K	$21.67	-$50.27K	Jul 19, 2022	545.86K	Options	—	Jul 16	View
From 4	-0.01	2.62K	$21.34	-$55.91K	Jul 06, 2022	356.78K	Tax	—	Jul 01	View
From 4	-0.00	2.32K	$20.47	-$47.49K	Jun 21, 2022	550.80K	Options	—	Jun 16	View
From 4	-0.01	2.62K	$22.94	-$60.10K	Jun 03, 2022	357.17K	Tax	—	Jun 01	View
From 4	-0.00	2.32K	$23.59	-$54.73K	May 18, 2022	555.74K	Options	—	May 16	View
From 4	-0.01	2.62K	$31.48	-$82.48K	May 02, 2022	357.57K	Tax	—	May 01	View
From 4	-0.00	2.32K	$32.68	-$75.82K	Apr 19, 2022	560.68K	Options	—	Apr 16	View
From 4	-0.01	2.62K	$35.98	-$94.27K	Apr 05, 2022	357.97K	Tax	—	Apr 01	View
From 4	-0.21	108.75K	$32.61	-$3.55M	Mar 18, 2022	399.69K	Options	—	Mar 16	View
From 4	0.64	164.08K	$33.89	-$62.70K	Mar 03, 2022	422.24K	Grant	—	Mar 01	View
From 4	-0.01	1.85K	$38.61	-$71.47K	Feb 03, 2022	258.16K	Tax	—	Feb 01	View
From 4	-0.01	2.02K	$41.93	-$84.91K	Jan 04, 2022	260.01K	Tax	—	Jan 01	View
From 4	-0.01	2.73K	$36.02	-$98.23K	Dec 03, 2021	262.03K	Tax	—	Dec 01	View
From 4	-0.01	2.73K	$44.36	-$120.97K	Nov 03, 2021	264.76K	Tax	—	Nov 01	View
From 4	-0.01	2.73K	$47.05	-$128.31K	Oct 05, 2021	267.49K	Tax	—	Oct 01	View
From 4	-0.19	65.43K	$39.89	-$2.61M	Sep 16, 2021	270.21K	Tax	—	Sep 10	View
From 4	-0.01	2.73K	$40.62	-$110.77K	Sep 03, 2021	335.65K	Tax	—	Sep 01	View
From 4	-0.01	2.73K	$43.46	-$118.52K	Aug 03, 2021	338.37K	Tax	—	Aug 01	View
From 4	-0.01	2.52K	$50.59	-$127.69K	Jul 06, 2021	341.10K	Tax	—	Jul 01	View
From 4	-0.01	2.52K	$50.98	-$128.72K	Jun 03, 2021	343.62K	Tax	—	Jun 01	View
From 4	-0.01	2.52K	$54.77	-$138.29K	May 04, 2021	346.15K	Tax	—	May 01	View
From 4	-0.01	2.52K	$57.60	-$145.44K	Apr 05, 2021	348.67K	Tax	—	Apr 01	View
From 4	0.54	123.15K	—	—	Mar 24, 2021	351.20K	Grant	—	Mar 22	View
From 4	-0.10	48.97K	$58.85	-$2.88M	Mar 18, 2021	428.05K	Options	—	Mar 16	View
From 4	0.28	50.38K	$54.40	-$95.53K	Mar 03, 2021	229.15K	Grant	—	Mar 01	View
From 4	-0.01	1.76K	$52.76	-$92.65K	Feb 03, 2021	178.77K	Tax	—	Feb 01	View
From 4	-0.01	1.90K	$51.00	-$96.64K	Jan 05, 2021	180.53K	Tax	—	Jan 01	View
From 4	-0.01	2.53K	$49.63	-$125.42K	Dec 03, 2020	182.42K	Tax	—	Dec 01	View
From 4	-0.01	2.53K	$33.41	-$84.43K	Nov 03, 2020	184.95K	Tax	—	Nov 01	View
From 4	-0.01	2.53K	$37.14	-$93.89K	Oct 05, 2020	187.48K	Tax	—	Oct 01	View
From 4	-0.01	2.53K	$34.30	-$86.74K	Sep 03, 2020	190.01K	Tax	—	Sep 01	View
From 4	-0.01	2.53K	$30.26	-$76.53K	Aug 04, 2020	192.53K	Tax	—	Aug 01	View
From 4	-0.01	2.53K	$30.43	-$77.02K	Jul 06, 2020	195.06K	Tax	—	Jul 01	View
From 4	-0.01	2.53K	$35.82	-$90.66K	Jun 03, 2020	197.59K	Tax	—	Jun 01	View
From 4	-0.01	2.53K	$28.39	-$71.88K	May 05, 2020	200.13K	Tax	—	May 01	View
From 4	-0.01	2.53K	$25.42	-$64.39K	Apr 03, 2020	202.66K	Tax	—	Apr 01	View
From 4	—	300.00K	—	—	Mar 05, 2020	300.00K	Grant	—	Mar 03	View
From 4	-0.01	1.76K	$33.87	-$59.75K	Mar 03, 2020	205.19K	Tax	—	Mar 01	View
From 4	-0.01	1.76K	$36.29	-$64.05K	Feb 04, 2020	206.95K	Tax	—	Feb 01	View
From 4	-0.01	2.00K	$29.74	-$59.42K	Jan 03, 2020	208.72K	Tax	—	Jan 01	View
From 4	-0.01	2.54K	$29.60	-$75.12K	Dec 03, 2019	210.72K	Tax	—	Dec 01	View
From 4	-0.01	2.54K	$31.37	-$79.68K	Nov 05, 2019	213.26K	Tax	—	Nov 01	View
From 4	-0.01	2.54K	$29.15	-$74.10K	Oct 03, 2019	215.80K	Tax	—	Oct 01	View
From 4	-0.11	27.97K	$32.57	-$910.92K	Sep 04, 2019	218.34K	Tax	—	Sep 01	View
From 4	—	246.31K	—	—	May 13, 2019	246.31K	Grant	—	May 09	View
From 3	—	—	—	—	May 09, 2019	—	—	—	—	View

cit group inc

Co-President Officer

Updated: Aug 05, 2015

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.52	106.20K	—	—	Aug 05, 2015	309.93K	Grant	—	Aug 03	View
From 4	0.08	15.83K	$45.88	-$773.22K	Feb 23, 2015	203.73K	Grant	—	Feb 19	View
From 4	-0.10	21.94K	$43.82	-$961.50K	Feb 04, 2015	187.90K	Tax	—	Feb 01	View
From 4	0.30	48.23K	—	—	Jan 29, 2015	209.84K	Grant	—	Jan 28	View
From 4	0.35	41.87K	—	—	Feb 24, 2014	161.61K	Grant	—	Feb 20	View
From 4	-0.11	14.96K	$46.55	-$696.16K	Feb 04, 2014	119.74K	Tax	—	Feb 01	View
From 4	-0.12	17.86K	$46.08	-$823.02K	Jun 04, 2013	134.69K	Tax	—	Jun 01	View
From 4	-0.05	7.45K	$42.44	-$316.01K	Feb 05, 2013	152.56K	Tax	—	Feb 01	View
From 4	0.39	44.84K	—	—	Feb 01, 2013	160.00K	Grant	—	Jan 30	View
From 4	1.08	59.75K	—	—	Feb 03, 2012	115.16K	Grant	—	Feb 01	View
From 4	-0.20	13.65K	$43.25	-$590.32K	Jun 03, 2011	55.41K	Tax	—	Jun 01	View
From 4	—	69.06K	—	—	Jun 03, 2010	69.06K	Grant	—	Jun 01	View
From 3	—	—	—	—	Jun 03, 2010	—	—	—	—	View

merrill lynch & co., inc.

EVP & Chief Financial Officer Officer

Updated: Jan 05, 2009

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-1.00	421.68K	—	—	Jan 05, 2009	—	Disposition	—	Jan 01	View
From 4	0.19	22.70K	$22.50	$510.75K	Jul 31, 2008	142.85K	Purchase	—	Jul 29	View
From 4	-0.01	1.31K	$44.04	-$57.69K	Jun 03, 2008	120.15K	Tax	—	Jun 01	View
From 4	0.23	22.48K	—	—	Jan 30, 2008	121.46K	Grant	—	Jan 28	View
From 4	—	377.81K	—	—	Dec 12, 2007	377.81K	Grant	—	Dec 10	View
From 3	—	—	—	—	Dec 12, 2007	—	—	—	—	View

nyse group, inc.

Exec. VP and CFO Officer

Updated: Apr 05, 2007

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-1.00	171.26K	—	—	Apr 05, 2007	—	Disposition	—	Apr 04	View
From 4	-0.17	9.80K	$54.63	-$805.23K	Apr 05, 2007	48.04K	Sale	—	Apr 03	View
From 4	-0.01	200.00	$95.64	-$19.13K	Apr 05, 2007	32.04K	Sale	—	Apr 03	View
From 4	-0.06	2.00K	$83.47	-$166.56K	Mar 22, 2007	32.04K	Sale	—	Mar 20	View
From 4	-0.32	27.80K	$44.07	-$784.45K	Mar 22, 2007	60.04K	Sale	—	Mar 20	View
From 4	-0.09	3.30K	$81.48	-$268.87K	Mar 09, 2007	32.04K	Sale	—	Mar 06	View
From 4	-0.09	6.70K	$47.49	-$412.45K	Mar 08, 2007	71.14K	Sale	—	Mar 06	View
From 4	-0.09	6.70K	$47.49	-$412.45K	Mar 08, 2007	71.14K	Sale	—	Mar 06	View
From 4	-0.06	6.60K	$88.76	-$585.97K	Feb 22, 2007	103.18K	Sale	—	Feb 20	View
From 4	0.24	16.60K	$51.14	-$168.04K	Feb 22, 2007	84.44K	Sell-Options	—	Feb 20	View
From 4	-0.13	4.74K	$98.78	-$468.22K	Feb 08, 2007	32.04K	Sale	—	Feb 06	View
From 4	-0.05	5.26K	$55.86	-$382.99K	Feb 08, 2007	92.58K	Sale	—	Feb 06	View
From 4	—	12.43K	—	—	Feb 06, 2007	12.43K	Grant	—	Feb 03	View
From 4	-0.19	7.40K	$97.19	-$719.22K	Jan 25, 2007	32.04K	Sale	—	Jan 23	View
From 4	-0.02	2.60K	$55.40	-$119.07K	Jan 25, 2007	105.24K	Sale	—	Jan 09 - 23	View
From 4	-0.02	2.60K	$58.27	-$153.35K	Jan 11, 2007	128.37K	Sale	—	Jan 09	View
From 4	-0.10	4.10K	$105.22	-$430.74K	Jan 11, 2007	35.14K	Sale	—	Jan 09	View
From 4	-0.08	2.90K	$105.45	-$306.19K	Jan 11, 2007	32.04K	Sale	—	Jan 09	View
From 4	-0.59	46.11K	$61.50	-$2.84M	May 12, 2006	32.04K	Sale	—	May 10	View
From 4	—	274.95K	$38.82	-$3.25M	May 01, 2006	274.95K	Options	—	Mar 07 - 27	View
From 3	—	—	—	—	Mar 07, 2006	32.04K	—	—	—	View

nyse euronext

CFO and Mgmt Committee Member Officer

Updated: Apr 19, 2007

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.02	500.00	$92.93	-$46.47K	Apr 19, 2007	32.04K	Sale	—	Apr 17	View
From 4	—	161.76K	$54.34	-$883.10K	Apr 19, 2007	161.76K	Sale	—	Apr 04 - 17	View
From 3	—	—	—	—	Apr 03, 2007	32.04K	—	—	—	View

archipelago holdings inc

NA Officer

Updated: Mar 08, 2006

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-1.00	322.13K	—	—	Mar 08, 2006	—	Disposition	—	Mar 07	View
From 4	-0.39	20.87K	$50.00	-$1.04M	Jan 04, 2006	32.04K	Options	—	Dec 30	View
From 4	—	8.63K	—	—	Nov 03, 2005	8.63K	Grant	—	Nov 01	View
From 4	—	8.63K	—	—	Nov 03, 2005	8.63K	Grant	—	Nov 01	View
From 4	—	2.07K	—	—	Oct 04, 2005	2.07K	Grant	—	Sep 30	View
From 4	—	2.12K	—	—	Jul 01, 2005	2.12K	Grant	—	Jun 30	View
From 4	—	4.66K	—	—	Apr 04, 2005	4.66K	Grant	—	Mar 31	View
From 4	—	25.65K	$19.30	$495.01K	Mar 18, 2005	25.65K	Grant	—	Mar 16	View
From 4	—	35.42K	—	—	Feb 08, 2005	35.42K	Grant	—	Feb 04	View
From 4	—	70.00K	$11.50	$805.00K	Aug 13, 2004	70.00K	Grant	—	Aug 11	View
From 3	—	—	—	—	Aug 12, 2004	—	—	—	—	View

Benzinga

Benzinga

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Holdings & Transactions