TMO insider ownership: who sold, why, and what they still hold

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Gianluca Pettiti President & COO	4,133	$614.38	15%	23K	Aug 31, 2026	Sep 1, 2026

What stands out

Two officers sold $68.2M with no disclosed plan: Michel Lagarde ($51.3M) and Lisa Britt ($16.9M). The filings don't state a reason.Michel Lagarde: largest such sale, Dec 2, 2025 · Lisa Britt: largest such sale, Aug 19, 2026

Gianluca Pettiti sold 40% of vested holdings: 8.7K shares for $5.1M, all under a disclosed plan.Largest sale, Aug 31, 2026

Joseph Holmes sold 420 shares (18% of starting holdings), but 1.2K more vested, so the stake grew (from 2.3K to 2.9K).Largest sale, Aug 7, 2026

Percentages cover 16 of 21 officers and directors. 5 are left out

Left out: Marc Casper, Michel Lagarde, Michael Shafer, Lisa Britt and Frederick Lowery (most of their shares vested during the period, so a percentage would mislead).

Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Each bar is 100% of that person's own stake; not comparable between people. The stake is the vested shares held at the start of the period (Oct 9, 2025); the gold part is what they sold.

Marc Casper

Chairman & CEO, Director

Sold $53.9M (plan status beside the amount). That is 40% of the shares held or received (after tax withholding) during the period†. A share of the starting stake is not shown: most of these shares arrived during the period. Why

$53.9MDisclosed plan

Michel Lagarde

Executive Vice President

Sold $51.3M (plan status beside the amount). That is 51% of the shares held or received (after tax withholding) during the period†. A share of the starting stake is not shown: most of these shares arrived during the period. Why

$51.3MNo plan disclosed

Michael Shafer

Executive Vice President

Sold $22.5M (plan status beside the amount). That is 65% of the shares held or received (after tax withholding) during the period†. A share of the starting stake is not shown: most of these shares arrived during the period. Why

$22.5MDisclosed plan

Lisa Britt

Sr. VP and Chief HR Officer

Sold $16.9M (plan status beside the amount). That is 67% of the shares held or received (after tax withholding) during the period†. A share of the starting stake is not shown: most of these shares arrived during the period. Why

$16.9MNo plan disclosed

Frederick Lowery

Executive Vice President

Sold $8.2M (plan status beside the amount). That is 46% of the shares held or received (after tax withholding) during the period†. A share of the starting stake is not shown: most of these shares arrived during the period. Why

$8.2MDisclosed plan

All 7 sellers

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planNo plan disclosedOne dollar scale for every month; the tallest bar is labeled

Common questions

Is the Thermo Fisher Scientific CEO selling stock?

Yes. Marc Casper sold 94K shares ($53.9M) in the past 12 months, all of it under a trading plan disclosed in the filings.

Why are Thermo Fisher Scientific insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 57% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 43% had no disclosed plan. A trading plan schedules sales in advance.

Are any Thermo Fisher Scientific insiders buying?

No. Officers and directors reported no purchases in the past 12 months.

How much of their stake did Thermo Fisher Scientific insiders sell?

About 4.3% overall. As a group they ended with more shares than they started with. These figures leave out Marc Casper, the largest holder (most of their shares vested during the period, so a percentage would mislead). That covers the 12 months to Oct 9, 2026 and counts vested shares reported on SEC Forms 3, 4 and 5, which is not an insider's whole wealth.

The evidence

Who sold7 officers and directors: amount, % of holdings, trading plan

Who sold	Amount	% of holdings	Trading plan
Marc Casper Chairman & CEO, Director	$53.9M 94K shares	40%† i † Most of the shares Marc Casper sold arrived during the period, so this is shares sold as a share of the 145K held at the start plus the 94K received, less 5.9K withheld by the company for taxes.	Disclosed plan
Michel Lagarde Executive Vice President	$51.3M 89K shares	51%† i † Most of the shares Michel Lagarde sold arrived during the period, so this is shares sold as a share of the 23K held at the start plus the 152K received, less 1.2K withheld by the company for taxes.	No plan disclosed
Michael Shafer Executive Vice President	$22.5M 38K shares	65%† i † Most of the shares Michael Shafer sold arrived during the period, so this is shares sold as a share of the 19K held at the start plus the 41K received, less 1.6K withheld by the company for taxes.	Disclosed plan
Lisa Britt Sr. VP and Chief HR Officer	$16.9M 29K shares	67%† i † Most of the shares Lisa Britt sold arrived during the period, so this is shares sold as a share of the 16K held at the start plus the 28K received, less 742 withheld by the company for taxes.	No plan disclosed
Frederick Lowery Executive Vice President	$8.2M 14K shares	46%† i † Most of the shares Frederick Lowery sold arrived during the period, so this is shares sold as a share of the 16K held at the start plus the 15K received, less 897 withheld by the company for taxes.	Disclosed plan
Gianluca Pettiti President & COO	$5.1M 8.7K shares	40%	Disclosed plan
Joseph Holmes VP & Chief Accounting Officer	$246K 420 shares	18%	No plan disclosed

The full ownership picture21 of 21 insiders fully reconciled · 21 officers and directors

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

Insider

Held Oct 9, 2025

Sold

Held Oct 9, 2026

Still held

Marc Casper

Chairman & CEO, Director

145K

−94K

139K

not meaningful

Vesting, gifts, unvested awards and holding lines for Marc Casper

+79Kshares vested or exercised

0gifted (net of own trusts)

−5.9Kwithheld by the company for taxes

71K → 71Kunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	113,762	122,669
Floral Park Associates, Inc	Common Stock	14,608	0
Alison Casper 2020 Irrevocable Trust	Common Stock	11,300	11,300
MNC 2020 Irrevocable Trust	Common Stock	5,000	5,000

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
45,374	$552.85	Feb 21, 2032	$2.8M
53,730	$418.32	Sep 9, 2027	$10.5M
42,387	$530.86	Feb 19, 2035	$3.5M
32,109	$513.68	Feb 25, 2036	$3.2M

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Scott Sperling

Director

73K

69K

no sales

Vesting, gifts, unvested awards and holding lines for Scott Sperling

0shares vested or exercised

−4.4Kgifted (net of own trusts)

17K → 18Kunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	73,366	69,479

Stephen Williamson

Retiring Sr. VP and CFO

54K

no sales

Vesting, gifts, unvested awards and holding lines for Stephen Williamson

0shares vested or exercised

−433gifted (net of own trusts)

−922withheld by the company for taxes

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	32,320	32,499
SLAT	Common Stock	12,674	12,674
GRAT	Common Stock	8,844	8,844

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
12,250	$552.85	Feb 21, 2032	$754K
20,000	$418.32	Sep 9, 2027	$3.9M
9,398	$530.86	Feb 19, 2035	$785K

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Michel Lagarde

Includes unvested RSUs, amount not disclosed.

Executive Vice President

23K

−89K

85K

not meaningful

Vesting, gifts, unvested awards and holding lines for Michel Lagarde

+149Kshares vested or exercised

0gifted (net of own trusts)

−1.2Kwithheld by the company for taxes

none reportedunvested awards, start → end

Includes unvested RSUs, amount not disclosed.

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct includes unvested RSUs, amount not disclosed	Common Stock	23,480	85,151

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
14,179	$552.85	Feb 21, 2032	$872K
22,870	$418.32	Sep 9, 2027	$4.5M
13,666	$530.86	Feb 19, 2035	$1.1M

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Gianluca Pettiti

President & COO

22K

−8.7K

23K

+7.7%

Vesting, gifts, unvested awards and holding lines for Gianluca Pettiti

+6.7Kshares vested or exercised

0gifted (net of own trusts)

−2.1Kwithheld by the company for taxes

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	21,552	23,216

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
7,467	$309.63	Feb 25, 2027	$2.3M
13,047	$552.85	Feb 21, 2032	$803K
14,300	$418.32	Sep 9, 2027	$2.8M
12,599	$530.86	Feb 19, 2035	$1.1M
16,270	$513.68	Feb 25, 2036	$1.6M

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Michael Shafer

Minor difference of -12 shares. Difference is under 0.5% of holdings.

Executive Vice President

19K

−38K

20K

not meaningful

Vesting, gifts, unvested awards and holding lines for Michael Shafer

+36Kshares vested or exercised

0gifted (net of own trusts)

−1.6Kwithheld by the company for taxes

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	18,731	20,204

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
8,425	$458.81	Feb 23, 2028	$1.3M
7,698	$528.58	Feb 23, 2030	$660K
7,419	$548.40	Feb 22, 2031	$490K
9,077	$552.85	Feb 21, 2032	$559K
9,610	$530.86	Feb 19, 2035	$803K
13,698	$513.68	Feb 25, 2036	$1.4M

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Reconciliation: minor difference of -12 shares. Difference is under 0.5% of holdings.

Lisa Britt

Sr. VP and Chief HR Officer

16K

−29K

14K

not meaningful

Vesting, gifts, unvested awards and holding lines for Lisa Britt

+26Kshares vested or exercised

0gifted (net of own trusts)

−742withheld by the company for taxes

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	15,895	14,391

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
4,990	$552.85	Feb 21, 2032	$307K
5,338	$530.86	Feb 19, 2035	$446K
5,139	$513.68	Feb 25, 2036	$517K

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Frederick Lowery

Minor difference of -52 shares. Difference is under 0.5% of holdings.

Executive Vice President

16K

−14K

16K

not meaningful

Vesting, gifts, unvested awards and holding lines for Frederick Lowery

+14Kshares vested or exercised

0gifted (net of own trusts)

−897withheld by the company for taxes

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	14,367	15,044
401K	Common Stock	1,175	1,187
Limited Liability Company	Common Stock	5	5

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
12,675	$309.63	Feb 25, 2027	$3.9M
3,870	$514.76	Nov 5, 2027	$386K
14,300	$418.32	Sep 9, 2027	$2.8M
10,980	$458.81	Feb 23, 2028	$1.7M
9,293	$528.58	Feb 23, 2030	$797K
1,482	$536.70	Sep 6, 2031	$115K
8,564	$548.40	Feb 22, 2031	$565K
9,644	$552.85	Feb 21, 2032	$593K
10,037	$530.86	Feb 19, 2035	$838K

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Reconciliation: minor difference of -52 shares. Difference is under 0.5% of holdings.

Nelson Chai

Director

15K

no sales

Vesting, gifts, unvested awards and holding lines for Nelson Chai

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	14,817	15,316

Martin Harris

Director

9.5K

no sales

Vesting, gifts, unvested awards and holding lines for Martin Harris

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	9,033	9,532

Tyler Jacks

Director

9.5K

no sales

Vesting, gifts, unvested awards and holding lines for Tyler Jacks

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	8,963	9,462

James Meyer

Minor difference of 28 shares. Difference is under 0.5% of holdings. Started reporting during the period; starting holdings are from the Form 3.

Sr. Vice President & CFO

5.9K

5.6K

no sales

Vesting, gifts, unvested awards and holding lines for James Meyer

0shares vested or exercised

0gifted (net of own trusts)

−301withheld by the company for taxes

none reportedunvested awards, start → end

Started reporting during the period; starting holdings are from the Form 3.

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	5,841	5,560
401k	Common Stock	50	58

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
920	$458.81	Feb 23, 2028	$143K
223	$635.10	Nov 1, 2028	$0
579	$528.58	Feb 23, 2030	$50K
715	$548.40	Feb 22, 2031	$47K
1,713	$548.40	Feb 22, 2031	$113K
424	$552.85	Feb 21, 2032	$26K
1,929	$552.85	Feb 21, 2032	$119K
2,777	$530.86	Feb 19, 2035	$232K
3,598	$430.73	Jul 10, 2035	$661K
6,851	$513.68	Feb 25, 2035	$690K

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Reconciliation: minor difference of 28 shares. Difference is under 0.5% of holdings.

Thomas Shropshire Jr.

SVP and General Counsel

5.4K

no sales

Vesting, gifts, unvested awards and holding lines for Thomas Shropshire Jr.

0shares vested or exercised

0gifted (net of own trusts)

−387withheld by the company for taxes

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	5,417	6,009

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
15,530	$396.47	Jun 2, 2035	$3.4M
4,281	$513.68	Feb 25, 2036	$431K

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Dion Weisler

Director

5.4K

no sales

Vesting, gifts, unvested awards and holding lines for Dion Weisler

0shares vested or exercised

0gifted (net of own trusts)

−80withheld by the company for taxes

2.6K → 2.8Kunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	5,028	5,446

James Mullen

Director

3.4K

no sales

Vesting, gifts, unvested awards and holding lines for James Mullen

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	3,393	3,393

Ruby Chandy

Director

3.5K

no sales

Vesting, gifts, unvested awards and holding lines for Ruby Chandy

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	2,964	3,463

Joseph Holmes

Minor difference of -6 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

VP & Chief Accounting Officer

2.3K

−420

2.9K

+26%

Vesting, gifts, unvested awards and holding lines for Joseph Holmes

+420shares vested or exercised

0gifted (net of own trusts)

−167withheld by the company for taxes

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	2,319	2,916

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
140	$309.63	Feb 25, 2027	$43K
907	$552.85	Feb 21, 2032	$56K
959	$530.86	Feb 19, 2035	$80K
985	$513.68	Feb 25, 2036	$99K

Estimate: options held × ($614.38 − strike price), using the most recent insider trade price on Form 4 (Aug 31, 2026), not a market close.

Reconciliation: minor difference of -6 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Debora Spar

Director

2.1K

2.6K

no sales

Vesting, gifts, unvested awards and holding lines for Debora Spar

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	2,111	2,610

Alexandra Keith

Director

2.1K

2.6K

no sales

Vesting, gifts, unvested awards and holding lines for Alexandra Keith

0shares vested or exercised

0gifted (net of own trusts)

1.2K → 1.4Kunvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	2,103	2,602

Jennifer Johnson

Director

904

1.4K

no sales

Vesting, gifts, unvested awards and holding lines for Jennifer Johnson

0shares vested or exercised

0gifted (net of own trusts)

541 → 769unvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	904	1,403

Karen Lynch

Director

736

1.2K

no sales

Vesting, gifts, unvested awards and holding lines for Karen Lynch

0shares vested or exercised

0gifted (net of own trusts)

172 → 399unvested awards, start → end

Held through	Share class	Oct 9, 2025	Oct 9, 2026
Direct	Common Stock	660	1,159
Living Trust	Common Stock	76	76

21 of 21 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (17 exactly, 4 with a minor or footnoted difference). Percentages cover 16 of 21 officers and directors. Left out: Marc Casper, Michel Lagarde, Michael Shafer, Lisa Britt and Frederick Lowery (most of their shares vested during the period, so a percentage would mislead). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.

What explains the selling$158M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $158M across 271,554 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

Disclosed plan · $89.7M · 57%

43%

The lighter segment is sales with no plan disclosed in the filing ($68.4M), including tax-related sales outside a plan.

No plan disclosed · $68.4M

Sales with no 10b5-1 plan and no tax reference in the filing. $51.3M of it is Michel Lagarde. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Michel Lagarde, Dec 2, 2025

Taxes

14,347 shares ($7.9M) were withheld by the company for taxes, which isn't a market sale.

Seller	Shares sold	Proceeds	Under a disclosed plan	Share of total	Sales dates
Marc Casper Chairman & CEO, Director	94K	$53.9M	100%	34%	Oct 24, 2025 to Aug 24, 2026
Michel Lagarde Executive Vice President	89K	$51.3M	0%	32%	Nov 13, 2025 to Dec 4, 2025
Michael Shafer Executive Vice President	38K	$22.5M	100%	14%	Nov 25, 2025 to Aug 11, 2026
Lisa Britt Sr. VP and Chief HR Officer	29K	$16.9M	0%	11%	Nov 7, 2025 to Aug 19, 2026
Frederick Lowery Executive Vice President	14K	$8.2M	100%	5%	Dec 1, 2025 to Dec 2, 2025
Gianluca Pettiti President & COO	8.7K	$5.1M	100%	3%	Oct 24, 2025 to Aug 31, 2026
Joseph Holmes VP & Chief Accounting Officer	420	$246K	0%	0.2%	Aug 7, 2026 to Aug 7, 2026

Sales by month

Month	Sale proceeds	Disclosed plan	To cover taxes	No plan disclosed
Oct 2025	$14.1M	$14.1M	$0	$0
Nov 2025	$17.4M	$8.2M	$0	$9.2M
Dec 2025	$56.7M	$8.2M	$0	$48.6M
Jan 2026	$0	$0	$0	$0
Feb 2026	$216K	$216K	$0	$0
Mar 2026	$7.9M	$7.9M	$0	$0
Apr 2026	$185K	$185K	$0	$0
May 2026	$0	$0	$0	$0
Jun 2026	$0	$0	$0	$0
Jul 2026	$226K	$226K	$0	$0
Aug 2026	$61.3M	$50.7M	$0	$10.7M
Sep 2026	$0	$0	$0	$0
Oct 2026	$0	$0	$0	$0

Is this normal? Selling year by year5 earlier years to compare with

In line with the past 5 years. 7 insiders sold; the average is 7 a year.

12 months ending	Shares sold	Insiders who sold	Proceeds
Oct 9, 2026 Latest 12 months	272K	7	$158M
Oct 9, 2025 1 year earlier	189K	8	$101M
Oct 9, 2024 2 years earlier	283K	8	$162M
Oct 10, 2023 3 years earlier	263K	5	$142M
Oct 10, 2022 4 years earlier	269K	7	$160M
Oct 10, 2021 5 years earlier	195K	5	$96.9M

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertaintyEvery officer and director reconciles

Every officer and director reconciles for this period.

Michael Shafer: minor difference of -12 shares. Difference is under 0.5% of holdings.

Frederick Lowery: minor difference of -52 shares. Difference is under 0.5% of holdings.

James Meyer: minor difference of 28 shares. Difference is under 0.5% of holdings.

Joseph Holmes: minor difference of -6 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Inferred rename: "Marc N. Casper 2020 Irrevocable Trust" is treated as the same holder as "MNC 2020 Irrevocable Trust", because the old name was never reported again and the new one opened with the same balance (34,825 shares). Old name, new name

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology1,766 filings from SEC EDGAR, and how we read them

All 1,766 Forms 3, 4 and 5 filed for Thermo Fisher Scientific (SEC CIK 97745) from Jun 3, 2003 to Sep 29, 2026, retrieved from SEC EDGAR on Oct 9, 2026. Prices are the ones reported in each filing, often weighted averages. 13 filings were left out because Thermo Fisher Scientific filed them as an owner of another company's stock.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (39)No filing in 18 months; last reported balances, not in any total

Name	Last filed	Last reported balance
Michael Boxer	Mar 11, 2025	10,816 shares, last reported balance as of Mar 10, 2025
Lars Sorensen	May 23, 2024	9,233 shares, last reported balance as of May 22, 2024
Jim Manzi	Feb 7, 2023	14,807 shares, last reported balance as of Feb 3, 2023
Mark Stevenson	Mar 1, 2022	130,637 shares, last reported balance as of Feb 25, 2022
Thomas Lynch	Nov 8, 2021	14,257 shares, last reported balance as of Nov 5, 2021
Peter Hornstra	Mar 1, 2021	18,329 shares, last reported balance as of Feb 26, 2021
Syed Jafry	Mar 1, 2021	22,390 shares, last reported balance as of Feb 26, 2021
Judy Lewent	May 21, 2020	18,759 shares, last reported balance as of May 20, 2020
Gregory Herrema	Aug 29, 2019	26,967 shares, last reported balance as of Aug 28, 2019
Patrick Durbin	Aug 29, 2019	38,868 shares, last reported balance as of Aug 28, 2019
Elaine Ullian	May 23, 2019	8,344 shares, last reported balance as of May 22, 2019
Seth Hoogasian	Mar 1, 2018	26,937 shares, last reported balance as of Feb 28, 2018
William Parrett	Feb 27, 2018	11,660 shares, last reported balance as of Feb 23, 2018
Daniel Shine	Aug 31, 2017	20,682 shares, last reported balance as of Aug 30, 2017
Thomas Loewald	Aug 29, 2017	38,133 shares, last reported balance as of Aug 28, 2017
Peter Wilver	Mar 16, 2017	89,517 shares, last reported balance as of Mar 15, 2017
Alan Malus	Mar 14, 2016	61,542 shares, last reported balance as of Mar 10, 2016
Andrew Thomson	Aug 27, 2015	52,389 shares, last reported balance as of Aug 26, 2015
Edward Pesicka	Mar 9, 2015	80,641 shares, last reported balance as of Mar 5, 2015
Michael Porter	Mar 12, 2012	14,640 shares, last reported balance as of Mar 9, 2012
Kenneth Berger	Feb 28, 2012	36,128 shares, last reported balance as of Feb 26, 2012
Peter Manning	May 27, 2011	6,548 shares, last reported balance as of May 25, 2011
Michael Bell	May 24, 2010	8,365 shares, last reported balance as of May 20, 2010
Stephen Kaufman	May 24, 2010	9,192 shares, last reported balance as of May 20, 2010
Stephen Sheehan	Mar 9, 2010	4,396 shares, last reported balance as of Mar 5, 2010
Yuh-Geng Tsay	Mar 2, 2010	110,369 shares, last reported balance as of Feb 26, 2010
Marijn Dekkers	Aug 18, 2009	102,814 shares, last reported balance as of Aug 17, 2009
Bruce Koepfgen	Aug 19, 2008	6,143 shares, last reported balance as of Aug 18, 2008
Guy Broadbent	Mar 7, 2008	31,545 shares, last reported balance as of Mar 5, 2008
Fredric Walder	Mar 7, 2008	17,736 shares, last reported balance as of Mar 5, 2008
Alexander Stachtiaris	Mar 7, 2008	17,236 shares, last reported balance as of Mar 5, 2008
Joseph Massaro	Nov 20, 2007	15,000 shares, last reported balance as of Nov 16, 2007
Paul Meister	Jan 9, 2007	1,722,787 shares, last reported balance as of Jan 8, 2007
Leary O	May 25, 2006	1,000 shares, last reported balance as of Feb 9, 2004
John Lamattina	May 25, 2006	3,000 shares, last reported balance as of Mar 9, 2004
Robert McCabe	May 25, 2006	32,558 shares, last reported balance as of Mar 19, 2004
Kyriazi Melas	Sep 17, 2004	159,901 shares, last reported balance as of Sep 16, 2004
Barry Howe	Apr 23, 2004	26,661 shares, last reported balance as of Jul 31, 2003
Richard Syron	Dec 16, 2003	351,105 shares, last reported balance as of Dec 12, 2003

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Thermo Fisher Scientific insiders sold $158M in the past 12 months. How much of their stake is that?

What stands out

Who sold, and how much of their stake

Selling by month

Common questions

Is the Thermo Fisher Scientific CEO selling stock?

Why are Thermo Fisher Scientific insiders selling?

Are any Thermo Fisher Scientific insiders buying?

How much of their stake did Thermo Fisher Scientific insiders sell?

The evidence

No plan disclosed · $68.4M

Taxes

Sales by month