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Thermo Fisher Scientific (NYSE: TMO) CEO exercises options, sells 15,000 shares

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Thermo Fisher Scientific Chairman & CEO Marc N. Casper exercised stock options for 10,000 shares of common stock at an exercise price of $309.63 per share on August 6, 2026, then, under a Rule 10b5-1 trading plan adopted April 27, 2026, sold an aggregate 15,000 common shares in multiple transactions at weighted-average prices generally between the low $570s and high $570s, both directly and indirectly through Floral Park Associates, Inc. The exercised option, which vested in four equal installments from 2021–2024, expires on February 25, 2027, and 20,550 options remain outstanding afterward.

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Insider CASPER MARC N
Role Chairman & CEO
Sold 15,000 shs ($8.62M)
Approx. gross sale proceeds $8.62M
Approx. exercise cost $3.10M
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) F20 10,000 $0.00 $0.00
Exercise Common Stock 10,000 $309.63 $3.10M
Sale Common Stock F1, F2 480 $571.05 $274K
Sale Common Stock F1, F3 1,631 $572.43 $934K
Sale Common Stock F1, F4 2,545 $573.53 $1.46M
Sale Common Stock F1, F5 1,617 $574.40 $929K
Sale Common Stock F1, F6 2,164 $575.46 $1.25M
Sale Common Stock F1, F7 480 $576.46 $277K
Sale Common Stock F1, F8 451 $577.43 $260K
Sale Common Stock F1, F9 321 $578.67 $186K
Sale Common Stock F1, F10 311 $579.90 $180K
Sale Common Stock F1, F11 240 $571.00 $137K
Sale Common Stock F1, F12 660 $572.33 $378K
Sale Common Stock F1, F13 1,200 $573.34 $688K
Sale Common Stock F1, F14 1,008 $574.28 $579K
Sale Common Stock F1, F15 1,060 $575.41 $610K
Sale Common Stock F1, F16 225 $576.09 $130K
Sale Common Stock F1, F17 361 $577.57 $209K
Sale Common Stock F1, F18 119 $578.93 $69K
Sale Common Stock F1, F19 127 $580.01 $74K
Holdings After Transaction: Stock Option (Right to Buy) — 20,550 shares (Direct); Common Stock — 123,925.358 shares (Direct); Common Stock — 4,608 shares (Indirect, By Floral Park Associates, Inc.)
Footnotes (20)
  1. F1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 27, 2026.
  2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $570.56 to $571.53, inclusive. The reporting person undertakes to provide to Thermo Fisher Scientific Inc. ("TMO"), any security holder of TMO or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2), (3), (4), (5), (6), (7), (8), (9), (10), (11), (12), (13), (14), (15), (16), (17), (18) and (19) to this Form 4.
  3. F3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $571.83 to $572.78, inclusive.
  4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $572.94 to $573.93, inclusive.
  5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $573.94 to $574.92, inclusive.
  6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $575.00 to $575.95, inclusive.
  7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $576.10 to $577.03, inclusive.
  8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $577.14 to $578.13, inclusive.
  9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $578.14 to $579.13, inclusive.
  10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $579.28 to $580.07, inclusive.
  11. F11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $570.56 to $571.45, inclusive.
  12. F12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $571.70 to $572.67, inclusive.
  13. F13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $572.90 to $573.87, inclusive.
  14. F14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $573.91 to $574.70, inclusive.
  15. F15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $575.02 to $576.01, inclusive.
  16. F16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $576.08 to $576.11, inclusive.
  17. F17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $577.18 to $578.06, inclusive.
  18. F18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $578.54 to $579.11, inclusive.
  19. F19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $579.97 to $580.06, inclusive.
  20. F20. The option vested in four equal installments on February 25, 2021, 2022, 2023, and 2024.
Options exercised 10,000 shares Stock options exercised for common stock on August 6, 2026 at $309.63 strike price
Option exercise price $309.63 per share Exercise price of the Stock Option (Right to Buy) expiring February 25, 2027
Shares sold 15,000 shares Aggregate common stock sales on August 6, 2026 by Marc N. Casper and Floral Park Associates, Inc.
Representative sale prices $571.05–$580.01 per share Examples of weighted-average per-share prices across multiple code S sale transactions
Remaining options 20,550 options Stock options remaining following the 10,000-share exercise; option expires February 25, 2027
Rule 10b5-1 plan adoption date April 27, 2026 Date Marc N. Casper adopted the Rule 10b5-1 trading plan governing these transactions
Rule 10b5-1 trading plan regulatory
"The transactions were effected pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Stock Option (Right to Buy) financial
"Security title is reported as Stock Option (Right to Buy)"
indirect ownership financial
"Shares reported as indirectly owned by Floral Park Associates, Inc."

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FAQ

What insider activity did Thermo Fisher (TMO) CEO Marc N. Casper report for August 6, 2026?
Marc N. Casper exercised stock options for 10,000 Thermo Fisher shares at $309.63 per share and sold a total of 15,000 common shares in multiple transactions, some held directly and some indirectly through Floral Park Associates, Inc..

How many Thermo Fisher (TMO) shares did Marc N. Casper sell, and at what price range?
He sold an aggregate of 15,000 Thermo Fisher common shares on August 6, 2026 at weighted-average prices reported around the $571–$580 per share range, based on multiple code S sale transactions with detailed price ranges disclosed in the footnotes.

What stock options did Marc N. Casper exercise in this Thermo Fisher (TMO) Form 4?
Casper exercised a Stock Option (Right to Buy) covering 10,000 Thermo Fisher common shares at an exercise price of $309.63 per share. The option vested in four equal installments from February 25, 2021 through 2024 and expires on February 25, 2027.

Were Marc N. Casper’s Thermo Fisher (TMO) share sales made under a Rule 10b5-1 trading plan?
Yes. A footnote states the transactions reported were effected pursuant to a Rule 10b5-1 trading plan adopted by Marc N. Casper on April 27, 2026, indicating the trades followed a pre-arranged, pre-disclosed selling program.

Does Marc N. Casper still hold Thermo Fisher (TMO) stock options after these transactions?
Following the reported exercise, Casper continues to hold 20,550 stock options with a $309.63 exercise price expiring on February 25, 2027, as indicated by the post-transaction derivative holdings figure in the Form 4 data.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
CASPER MARC N
(Last)(First)(Middle)
168 THIRD AVENUE
(Street)
WALTHAM MASSACHUSETTS 02451
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
THERMO FISHER SCIENTIFIC INC. [ TMO ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chairman & CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/06/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock08/06/2026M10,000A$309.63133,925.358D
Common Stock08/06/2026S(1)480D$571.05(2)133,445.358D
Common Stock08/06/2026S(1)1,631D$572.43(3)131,814.358D
Common Stock08/06/2026S(1)2,545D$573.53(4)129,269.358D
Common Stock08/06/2026S(1)1,617D$574.4(5)127,652.358D
Common Stock08/06/2026S(1)2,164D$575.46(6)125,488.358D
Common Stock08/06/2026S(1)480D$576.46(7)125,008.358D
Common Stock08/06/2026S(1)451D$577.43(8)124,557.358D
Common Stock08/06/2026S(1)321D$578.67(9)124,236.358D
Common Stock08/06/2026S(1)311D$579.9(10)123,925.358D
Common Stock08/06/2026S(1)240D$571(11)9,368IBy Floral Park Associates, Inc.
Common Stock08/06/2026S(1)660D$572.33(12)8,708IBy Floral Park Associates, Inc.
Common Stock08/06/2026S(1)1,200D$573.34(13)7,508IBy Floral Park Associates, Inc.
Common Stock08/06/2026S(1)1,008D$574.28(14)6,500IBy Floral Park Associates, Inc.
Common Stock08/06/2026S(1)1,060D$575.41(15)5,440IBy Floral Park Associates, Inc.
Common Stock08/06/2026S(1)225D$576.09(16)5,215IBy Floral Park Associates, Inc.
Common Stock08/06/2026S(1)361D$577.57(17)4,854IBy Floral Park Associates, Inc.
Common Stock08/06/2026S(1)119D$578.93(18)4,735IBy Floral Park Associates, Inc.
Common Stock08/06/2026S(1)127D$580.01(19)4,608IBy Floral Park Associates, Inc.
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$309.6308/06/2026M10,000 (20)02/25/2027Common Stock10,000$020,550D
Explanation of Responses:
1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 27, 2026.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $570.56 to $571.53, inclusive. The reporting person undertakes to provide to Thermo Fisher Scientific Inc. ("TMO"), any security holder of TMO or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2), (3), (4), (5), (6), (7), (8), (9), (10), (11), (12), (13), (14), (15), (16), (17), (18) and (19) to this Form 4.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $571.83 to $572.78, inclusive.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $572.94 to $573.93, inclusive.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $573.94 to $574.92, inclusive.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $575.00 to $575.95, inclusive.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $576.10 to $577.03, inclusive.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $577.14 to $578.13, inclusive.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $578.14 to $579.13, inclusive.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $579.28 to $580.07, inclusive.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $570.56 to $571.45, inclusive.
12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $571.70 to $572.67, inclusive.
13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $572.90 to $573.87, inclusive.
14. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $573.91 to $574.70, inclusive.
15. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $575.02 to $576.01, inclusive.
16. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $576.08 to $576.11, inclusive.
17. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $577.18 to $578.06, inclusive.
18. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $578.54 to $579.11, inclusive.
19. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $579.97 to $580.06, inclusive.
20. The option vested in four equal installments on February 25, 2021, 2022, 2023, and 2024.
Remarks:
One of two Form 4's filed on August 7, 2026 for the reporting of transactions occurring on August 5 and August 6, 2026. The first Form 4 includes transactions occurring on August 5, 2026, and the second Form 4 includes transactions occurring on August 6, 2026. In aggregate, all transactions could not be included in the first Form 4 due to a limitation on the number of line items that can be included per table in a single Form 4.
/s/ Melodie T. Morin, Attorney-in-Fact for Marc N. Casper08/07/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR