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

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Craig Lampo EVP& CFO	54,547	n/a	11%	428K	Aug 6, 2026	Aug 6, 2026

What stands out

Eight officers sold $512M with no disclosed plan: Richard Norwitt ($219M), Craig Lampo ($90.0M) and Luc Walter ($49.2M), plus 5 more. The filings don't state a reason.Richard Norwitt: largest such sale, Jul 31, 2026 · Craig Lampo: largest such sale, Nov 11, 2025 · Luc Walter: largest such sale, Oct 24, 2025

Robert Livingston bought 10K shares for $1.3M, first on Feb 5, 2026. These are the first by current officers or directors since Nov 8, 2023.Purchase, Feb 5, 2026

Percentages cover 12 of 16 officers and directors. 4 are left out

Left out: Richard Norwitt and Lance D'Amico (holdings couldn't be fully reconciled); Martin Loeffler (most holdings were last confirmed in 2023); Sanjiv Lamba (held no vested shares at the start).

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 the insider's vested stake at the start of the period (Oct 8, 2025). The gold part is what they sold.

SoldRest of starting stakeAdded during the period

Richard Norwitt

President & CEO, Director

No bar: holdings couldn't be fully reconciled.

$219MNo plan disclosed

Craig Lampo

EVP& CFO

Sold 48% of the shares held or received (after tax withholding) during the period†. No bar against the starting stake: most of these shares arrived during the period.

$90.0MNo plan disclosed

Luc Walter

President, HES Division

Sold 46% of the shares held or received (after tax withholding) during the period†. No bar against the starting stake: most of these shares arrived during the period.

$49.2MNo plan disclosed

Lance D'Amico

EVP, Secretary & GenCounsel

No bar: holdings couldn't be fully reconciled.

$40.5MNo plan disclosed

David Silverman

EVP, Human Resources

Sold 90% of the shares held or received (after tax withholding) during the period†. No bar against the starting stake: most of these shares arrived during the period.

$37.8MNo plan disclosed

All 8 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 planTo cover taxesNo plan disclosed

Common questions

Is the Amphenol CEO selling stock?

Yes. Richard Norwitt sold 1.43M shares ($219M) in the past 12 months, none of it under a trading plan disclosed in the filings.

Why are Amphenol insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 0% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 100% had no disclosed plan. A trading plan schedules sales in advance.

Are any Amphenol insiders buying?

Yes. 1 officer or director reported 1 purchase in the past 12 months (Form 4 code P, which includes private purchases).

How much of their stake did Amphenol insiders sell?

About 51% of the shares they held or received (after tax withholding) during the period. The usual measure, against starting holdings alone, can't be used here because most of the shares sold arrived during the period. That covers the 12 months to Oct 8, 2026 and counts vested shares reported on SEC Forms 3, 4 and 5, which is not an insider's whole wealth.

The evidence

Who sold8 officers and directors: amount, % of holdings, trading plan

Who sold	Amount	% of holdings	Trading plan
Richard Norwitt President & CEO, Director	$219M 1.43M shares	i No percentage: holdings couldn't be fully reconciled.	No plan disclosed
Craig Lampo EVP& CFO	$90.0M 591K shares	48%† i † Most of the shares Craig Lampo sold arrived during the period, so this is shares sold as a share of the 522K held at the start plus the 703K received, less 0 withheld by the company for taxes.	No plan disclosed
Luc Walter President, HES Division	$49.2M 365K shares	46%† i † Most of the shares Luc Walter sold arrived during the period, so this is shares sold as a share of the 434K held at the start plus the 365K received, less 0 withheld by the company for taxes.	No plan disclosed
Lance D'Amico EVP, Secretary & GenCounsel	$40.5M 270K shares	i No percentage: holdings couldn't be fully reconciled.	No plan disclosed
David Silverman EVP, Human Resources	$37.8M 240K shares	90%† i † Most of the shares David Silverman sold arrived during the period, so this is shares sold as a share of the 27K held at the start plus the 240K received, less 0 withheld by the company for taxes.	No plan disclosed
Michael Ivas SVP & Corporate Controller	$33.8M 240K shares	53%† i † Most of the shares Michael Ivas sold arrived during the period, so this is shares sold as a share of the 157K held at the start plus the 293K received, less 0 withheld by the company for taxes.	No plan disclosed
William Doherty President, CS Division	$22.6M 160K shares	100%† i † Most of the shares William Doherty sold arrived during the period, so this is shares sold as a share of the 0 held at the start plus the 160K received, less 0 withheld by the company for taxes.	No plan disclosed
Peter Straub President, ISS Division	$18.7M 132K shares	100%† i † Most of the shares Peter Straub sold arrived during the period, so this is shares sold as a share of the 0 held at the start plus the 132K received, less 0 withheld by the company for taxes.	No plan disclosed

The full ownership picture14 of 16 insiders fully reconciled · 16 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 8, 2025

Sold

Held Oct 8, 2026

Still held

Richard Norwitt

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -1,998,539 shares on Oct 28, 2025 (Direct). See the filing Sales and other transactions for Richard Norwitt are complete.

President & CEO, Director

n/a

−1.43M

n/a

Vesting, gifts, unvested awards and holding lines for Richard Norwitt

+1.50Mshares vested or exercised

−150Kgifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -1,998,539 shares on Oct 28, 2025 (Direct). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	2,006,475	3,968
Norwitt Family Trust	Class A Common Stock	864,177	864,177

Additional holdings last reported Jul 28, 2023, not confirmed since: 5,594,092 shares. Not included in any total or percentage on this page.

Direct, Class A Common Stock-Joint Account: 1,934,848 shares, last reported Dec 6, 2021
Direct, Class A Common Stock-Richard and Glori Joint Account: 1,064,848 shares, last reported May 4, 2021
Norwitt Family Trust, Class A Common Stock-Trust: 931,836 shares, last reported Jul 28, 2023
Norwitt Family Trust 9-20-2012, Richard Adma Norwitt and Glori Joan Norwitt, original Trustees, Class A Common Stock-Trust: 498,964 shares, last reported Jul 22, 2016
Direct, Grantor Retained Annuity Trust-A: 205,860 shares, last reported Nov 9, 2015
Direct, Grantor Retained Annuity Trust-B: 205,860 shares, last reported Nov 9, 2015
Direct, IRA: 3,968 shares, last reported Jul 28, 2023
Grantor Retained Annuity Trust B-1, Richard A. Norwitt Grantor 2016 Retained Annuity Trust B-1: 65,632 shares, last reported Jul 31, 2018
Grantor Retained Annuity Trust-A, Richard A. Norwitt Grantor Retained Annuity Trust-A: 205,860 shares, last reported Oct 31, 2017
Direct, Richard A. Norwitt Grantor Retained Annuity Trust-A-1: 109,420 shares, last reported Jun 5, 2020
Grantor Retained Annuity Trust-A, Richard A. Norwitt Grantor Retained Annuity Trust-A-1: 161,136 shares, last reported Jul 31, 2018
Grantor Retained Annuity Trust-B, Richard A. Norwitt Grantor Retained Annuity Trust-B: 205,860 shares, last reported Oct 31, 2017

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
399,788	$22.37	May 23, 2029	$60.7M
538,666	$65.95	May 17, 2034	$58.3M
602,344	$86.88	May 16, 2035	$52.6M
464,989	$132.06	May 22, 2036	$19.6M

Estimate: options held × ($174.24 − strike price), using the most recent insider trade price on Form 4 (Aug 5, 2026), not a market close.

Martin Loeffler

Most of this insider's holdings were last confirmed in 2023. Confirmed in the last three years: 1,922,808 shares. Not confirmed since: 5,763,100 shares, left out of this row. "Still held" is not shown because it would cover only the smaller, confirmed part.

Director

1.92M

see note

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

0shares vested or exercised

−3.2Kgifted (net of own trusts)

none reportedunvested awards, start → end

Starting holdings restated for a probable stock split.
Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	2,730	2,730
Revocable Trust	Class A Common Stock	1,333,644	1,333,146
Irrevocable Trust	Class A Common Stock	584,572	584,572
Direct	Restricted Stock	2,360	2,360

Additional holdings last reported May 22, 2023, not confirmed since: 5,763,100 shares. Not included in any total or percentage on this page.

Direct, Irrevocable Loeffler Trust: 274,000 shares, last reported May 21, 2020
Direct, Loeffler Grantor Retained Annuity Trust 2018: 282,992 shares, last reported May 21, 2020
Class A Common Stock, Trust, Loeffler Grantor Retained Annuity Trust 2018: 484,912 shares, last reported May 23, 2019
Direct, Loeffler Grantor Retained Annuity Trust 2019: 442,228 shares, last reported May 21, 2020
Class A Common Stock, Trust, Loeffler Grantor Retained Annuity Trust 2019: 636,536 shares, last reported May 23, 2019
Direct, Loeffler Irrevocable Trust: 488,624 shares, last reported May 22, 2023
Direct, Martin & Sidsel Loeffler Irrevocable Trust: 409,236 shares, last reported May 20, 2021
Direct, Martin H. Loeffler 2019 GRAT: 422,714 shares, last reported May 19, 2022
Direct, Martin H. Loeffler 2021 GRAT: 215,302 shares, last reported May 22, 2023
Direct, Martin Loeffler Revocable Trust: 1,209,540 shares, last reported May 22, 2023
Direct, Revocable Trust-Martin & Sidsel Loeffler: 897,016 shares, last reported May 21, 2020

Reconciliation: minor difference of 2,730 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Craig Lampo

Starting holdings restated for a probable stock split. Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

EVP& CFO

522K

−591K

428K

not meaningful

Vesting, gifts, unvested awards and holding lines for Craig Lampo

+633Kshares vested or exercised

−95Kgifted (net of own trusts)

none reportedunvested awards, start → end

Starting holdings restated for a probable stock split.
Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	2022 GRAT	38,824	38,824
Direct	Class A Common Stock	125,695	90,665
Craig A. Lampo 2024 GRAT #2	Class A Common Stock	160,000	118,754
Craig A. Lampo 2024 GRAT #1	Class A Common Stock	74,305	0
Craig A. Lampo 2025 GRAT #1	Class A Common Stock	58,116	44,947
Lampo Family Trust	Class A Common Stock	39,884	39,884
Craig A. Lampo 2025 GRAT #2	Class A Common Stock	0	70,000
Direct	Lampo Family Trust	25,086	25,086

Additional holdings last reported May 19, 2022, not confirmed since: 255,798 shares. Not included in any total or percentage on this page.

Direct, 2021 GRAT: 55,798 shares, last reported May 19, 2022
Direct, Craig A. Lampo 2018 Grantor Retained Annuity Trust-1: 58,924 shares, last reported Jun 3, 2020
Class A Common Stock-Trust, Craig A. Lampo 2018 Grantor Retained Annuity Trust-1: 100,000 shares, last reported May 23, 2019
Direct, Craig A. Lampo 2019 GRAT-1: 41,076 shares, last reported Jun 3, 2020

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
193,200	$22.37	May 23, 2029	$29.3M
172,772	$65.95	May 17, 2034	$18.7M
172,496	$86.88	May 16, 2035	$15.1M
83,664	$65.95	May 17, 2034	$9.1M
137,997	$86.88	May 16, 2035	$12.1M
133,161	$132.06	May 22, 2036	$5.6M
40,076	$22.00	May 18, 2028	$6.1M

Estimate: options held × ($174.24 − strike price), using the most recent insider trade price on Form 4 (Aug 5, 2026), not a market close.

Luc Walter

President, HES Division

434K

−365K

354K

not meaningful

Vesting, gifts, unvested awards and holding lines for Luc Walter

+365Kshares vested or exercised

−80Kgifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	433,742	353,742

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
53,200	$33.30	May 20, 2031	$7.5M
101,546	$43.25	Jan 3, 2032	$13.3M
147,058	$65.95	May 17, 2034	$15.9M
146,824	$86.88	May 16, 2035	$12.8M
108,809	$132.06	May 22, 2036	$4.6M

Estimate: options held × ($174.24 − strike price), using the most recent insider trade price on Form 4 (Aug 5, 2026), not a market close.

Michael Ivas

New Form 3 filed 2025-05-15; earlier filings set aside.

SVP & Corporate Controller

157K

−240K

185K

not meaningful

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

+265Kshares vested or exercised

+2.5Kgifted (net of own trusts)

none reportedunvested awards, start → end

New Form 3 filed 2025-05-15; earlier filings set aside.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	152,412	154,948
children	Class A Common Stock	2,995	2,995
Spouse	Class A Common Stock	1,700	1,700
Michael Ivas 2026 GRAT #1	Class A Common Stock	0	25,000

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
228,000	$22.37	May 23, 2029	$34.6M
228,000	$22.55	May 21, 2030	$34.6M
128,000	$33.30	May 20, 2031	$18.0M
120,000	$33.80	May 19, 2032	$16.9M
101,204	$37.90	May 19, 2033	$13.8M
63,989	$65.96	May 17, 2034	$6.9M
68,998	$86.88	May 16, 2035	$6.0M
203,000	$22.37	May 23, 2029	$30.8M
51,134	$132.06	May 22, 2036	$2.2M

Estimate: options held × ($174.24 − strike price), using the most recent insider trade price on Form 4 (Aug 5, 2026), not a market close.

Robert Livingston

Director

128K

140K

no sales

Vesting, gifts, unvested awards and holding lines for Robert Livingston

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	125,720	138,080
Direct	Restricted Stock	2,360	1,552

Lance D'Amico

Holdings couldn't be fully reconciled. Balance changed with no matching transaction and no footnote: +25,000 shares on Feb 18, 2026 (Lance E. Damico 2026 GRAT #1). See the filing Sales and other transactions for Lance D'Amico are complete.

EVP, Secretary & GenCounsel

n/a

−270K

n/a

Vesting, gifts, unvested awards and holding lines for Lance D'Amico

+270Kshares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Holdings couldn't be fully reconciled. Balance changed with no matching transaction and no footnote: +25,000 shares on Feb 18, 2026 (Lance E. Damico 2026 GRAT #1). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Lance E. D'Amico 2024 Irrevocable Trust	Class A Comm Stock	0	0
Direct	Class A Common Stock	76,400	57,065
Lance E. Damico 2025 GRAT #1	Class A Common Stock	25,000	19,335
Lance E. D'Amico 2025 GRAT #1	Class A Common Stock	25,000	19,335
Lance E. Damico 2026 GRAT #1	Class A Common Stock	0	25,000

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
64,630	$65.95	May 17, 2034	$7.0M
86,036	$86.88	May 16, 2035	$7.5M
83,020	$132.06	May 22, 2036	$3.5M
43,086	$65.95	May 17, 2034	$4.7M
21,508	$86.88	May 16, 2035	$1.9M
70,000	$22.55	May 21, 2030	$10.6M

Estimate: options held × ($174.24 − strike price), using the most recent insider trade price on Form 4 (Aug 5, 2026), not a market close.

David Falck

Director

95K

96K

no sales

Vesting, gifts, unvested awards and holding lines for David Falck

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	92,434	94,794
Direct	Restricted Stock	2,360	1,552

Anne Wolff

Director

41K

43K

no sales

Vesting, gifts, unvested awards and holding lines for Anne Wolff

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	38,794	41,154
Direct	Restricted Stock	2,360	1,552

David Silverman

EVP, Human Resources

27K

−240K

27K

not meaningful

Vesting, gifts, unvested awards and holding lines for David Silverman

+240Kshares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	12,500	15,672
David Michael Silverman 2025 GRAT #1	Class A Common Stock	14,000	10,828

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
100,000	$18.23	May 19, 2027	$15.6M
120,000	$22.00	May 18, 2028	$18.3M
116,048	$37.90	May 19, 2033	$15.8M
73,375	$65.95	May 17, 2034	$7.9M
91,572	$86.88	May 16, 2035	$8.0M
70,690	$132.06	May 22, 2036	$3.0M
29,012	$37.90	May 19, 2033	$4.0M
18,343	$65.95	May 17, 2034	$2.0M

Estimate: options held × ($174.24 − strike price), using the most recent insider trade price on Form 4 (Aug 5, 2026), not a market close.

Rita Lane

Director

25K

26K

no sales

Vesting, gifts, unvested awards and holding lines for Rita Lane

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	7,480	9,840
Fries Lane Family Living Trust	Class A Common Stock	15,006	15,006
Direct	Restricted Stock	2,360	1,552

Nancy Altobello

Director

19K

20K

no sales

Vesting, gifts, unvested awards and holding lines for Nancy Altobello

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	16,482	18,842
Direct	Restricted Stock	2,360	1,552

Prahlad Singh

Director

11K

13K

no sales

Vesting, gifts, unvested awards and holding lines for Prahlad Singh

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	9,016	11,376
Direct	Restricted Stock	2,360	1,552

William Doherty

President, CS Division

−160K

not meaningful

Vesting, gifts, unvested awards and holding lines for William Doherty

+160Kshares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	0	0

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
106,000	$33.30	May 20, 2031	$14.9M
147,058	$65.95	May 17, 2034	$15.9M
146,824	$86.88	May 16, 2035	$12.8M
108,809	$132.06	May 22, 2036	$4.6M

Estimate: options held × ($174.24 − strike price), using the most recent insider trade price on Form 4 (Aug 5, 2026), not a market close.

Peter Straub

President, ISS Division

−132K

not meaningful

Vesting, gifts, unvested awards and holding lines for Peter Straub

+132Kshares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Class A Common Stock	0	0

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
44,000	$22.55	May 21, 2030	$6.7M
140,000	$33.30	May 20, 2031	$19.7M
160,000	$33.80	May 19, 2032	$22.5M
177,902	$37.90	May 19, 2033	$24.3M
147,058	$65.95	May 17, 2034	$15.9M
146,824	$86.88	May 16, 2035	$12.8M
108,809	$132.06	May 22, 2036	$4.6M

Estimate: options held × ($174.24 − strike price), using the most recent insider trade price on Form 4 (Aug 5, 2026), not a market close.

Sanjiv Lamba

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

Director

2.1K

no sales

Vesting, gifts, unvested awards and holding lines for Sanjiv Lamba

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

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

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	CLASS A COMMON STOCK	0	548
Direct	Restricted Stock	0	1,552

14 of 16 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (13 exactly, 1 with a minor or footnoted difference). For 2 we show sales but not holdings; the ! icon on their rows explains why. Percentages cover 12 of 16 officers and directors. Left out: Richard Norwitt and Lance D'Amico (holdings couldn't be fully reconciled); Martin Loeffler (most holdings were last confirmed in 2023); Sanjiv Lamba (held no vested shares at the start). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.

What explains the selling$512M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $512M across 3,423,606 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

No plan disclosed · $512M

Sales with no 10b5-1 plan and no tax reference in the filing. $219M of it is Richard Norwitt. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Richard Norwitt, Jul 31, 2026

Purchases · 1 buyer (1 trade)

1 officer or director bought shares in this period, in 1 trade(Form 4 code P). Across all their filings on record there are 5 purchase trades.

Seller	Shares sold	Proceeds	Under a disclosed plan	Share of total	Sales dates
Richard Norwitt President & CEO, Director	1.43M	$219M	0%	43%	Feb 12, 2026 to Jul 31, 2026
Craig Lampo EVP& CFO	591K	$90.0M	0%	18%	Nov 11, 2025 to Aug 4, 2026
Luc Walter President, HES Division	365K	$49.2M	0%	10%	Oct 24, 2025 to Oct 24, 2025
Lance D'Amico EVP, Secretary & GenCounsel	270K	$40.5M	0%	8%	Oct 29, 2025 to Aug 3, 2026
David Silverman EVP, Human Resources	240K	$37.8M	0%	7%	Nov 3, 2025 to Aug 5, 2026
Michael Ivas SVP & Corporate Controller	240K	$33.8M	0%	7%	Oct 31, 2025 to Nov 5, 2025
William Doherty President, CS Division	160K	$22.6M	0%	4%	Oct 29, 2025 to Dec 2, 2025
Peter Straub President, ISS Division	132K	$18.7M	0%	4%	Dec 2, 2025 to Dec 2, 2025

Sales by month

Month	Sale proceeds	Disclosed plan	To cover taxes	No plan disclosed
Oct 2025	$94.2M	$0	$0	$94.2M
Nov 2025	$76.4M	$0	$0	$76.4M
Dec 2025	$30.1M	$0	$0	$30.1M
Jan 2026	$0	$0	$0	$0
Feb 2026	$112M	$0	$0	$112M
Mar 2026	$0	$0	$0	$0
Apr 2026	$0	$0	$0	$0
May 2026	$18.7M	$0	$0	$18.7M
Jun 2026	$0	$0	$0	$0
Jul 2026	$111M	$0	$0	$111M
Aug 2026	$69.4M	$0	$0	$69.4M
Sep 2026	$0	$0	$0	$0
Oct 2026	$0	$0	$0	$0

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

Less than usual: about two-thirds of the 5-year average. 8 insiders sold; the average is 7 a year.

12 months ending	Shares sold	Insiders who sold	Proceeds
Oct 8, 2026 Latest 12 months	3.42M	8	$512M
Oct 8, 2025 1 year earlier	7.14M	8	$567M
Oct 8, 2024 2 years earlier	3.30M	7	$204M
Oct 9, 2023 3 years earlier	5.66M	7	$238M
Oct 9, 2022 4 years earlier	2.30M	4	$93.6M
Oct 9, 2021 5 years earlier	7.42M	10	$239M

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 uncertainty2 insiders whose holdings couldn't be fully reconciled

Richard Norwitt: holdings couldn't be fully reconciled (difference of -1,927,507 shares). Balance changed without a matching transaction, and the footnote does not state the amount: -1,998,539 shares on Oct 28, 2025 (Direct). Filing, Oct 28, 2025

Footnote: "Shares are owned through the reporting person's IRA."

Lance D'Amico: holdings couldn't be fully reconciled (difference of -5,665 shares). Balance changed with no matching transaction and no footnote: +25,000 shares on Feb 18, 2026 (Lance E. Damico 2026 GRAT #1). Filing, Feb 18, 2026

Martin Loeffler: minor difference of 2,730 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).

Inferred rename: "Norwitt Family Trust 9-20-2012, Richard Adam Norwitt and Glori Joan Norwitt, original Trustees" is treated as the same holder as "Norwitt Family Trust", because the old name was never reported again and the new one opened with the same balance (931,836 shares). Old name, new name

Inferred rename: "Lance E. D'Amico 2026 GRAT #1" is treated as the same holder as "Lance E. Damico 2026 GRAT #1", because the old name was never reported again and the new one opened with the same balance (25,000 shares). Old name, new name

Inferred typo: the share class "Class A Common Stock" is treated as the same class as "Class A Comm Stock" on 1 holding line, because the two spellings are nearly identical and each balance carried over exactly. Example (Lance D'Amico, 57,065 shares): old title, new title

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

Sources and methodology1,200 filings from SEC EDGAR, and how we read them

All 1,200 Forms 3, 4 and 5 filed for Amphenol (SEC CIK 820313) from Aug 19, 2003 to Aug 6, 2026, retrieved from SEC EDGAR on Oct 8, 2026. Prices are the ones reported in each filing, often weighted averages.

Probable 2-for-1 stock split on or before Mar 29, 2004 (split date stated in a footnote). Splits aren't reported as transactions; 5 holding lines changed by exactly this ratio, so earlier share counts are restated.

Probable 2-for-1 stock split on or before Mar 30, 2007 (split date stated in a footnote). Splits aren't reported as transactions; 10 holding lines changed by exactly this ratio, so earlier share counts are restated.

Probable 2-for-1 stock split on or before Oct 9, 2014 (split date stated in a footnote). Splits aren't reported as transactions; 7 holding lines changed by exactly this ratio, so earlier share counts are restated.

Probable 2-for-1 stock split on or before May 3, 2021 (first filing that shows post-split balances). Splits aren't reported as transactions; 7 holding lines changed by exactly this ratio, so earlier share counts are restated.

Probable 2-for-1 stock split on or before Jun 11, 2024 (split date stated in a footnote). Splits aren't reported as transactions; 7 holding lines changed by exactly this ratio, so earlier share counts are restated.

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 (52)No filing in 18 months; last reported balances, not in any total

Name	Last filed	Last reported balance
Edward Jepsen	May 21, 2024	986,282 shares, last reported balance as of May 17, 2024
Jean-Luc Gavelle	Sep 1, 2023	No balance on record
Stanley Clark	May 24, 2023	159,362 shares, last reported balance as of May 19, 2022
Martin Booker	Aug 30, 2021	2,400 shares, last reported balance as of Aug 27, 2021
Dieter Ehrmanntraut	May 24, 2021	No balance on record
Richard Gu	May 24, 2021	4,000 shares, last reported balance as of May 20, 2021
John Craig	May 21, 2021	32,234 shares, last reported balance as of May 20, 2021
Zachary Raley	Nov 5, 2020	No balance on record
Ronald Badie	Jan 6, 2020	213,588 shares, last reported balance as of Jan 2, 2020
Diana Reardon	Oct 28, 2019	321,520 shares, last reported balance as of Oct 25, 2019
John Lord	Jan 11, 2019	116,368 shares, last reported balance as of Nov 29, 2018
John Treanor	May 23, 2017	No balance on record
Richard Schneider	Dec 2, 2016	254,096 shares, last reported balance as of Dec 1, 2016
Edward Wetmore	Oct 25, 2016	27,136 shares, last reported balance as of Oct 21, 2016
Patrick Gillard	Jul 25, 2016	No balance on record
Thomas Meotti	May 27, 2016	No balance on record
Randall Ledford	May 27, 2016	29,095 shares, last reported balance as of May 26, 2016
Gary Anderson	Nov 4, 2015	440,000 shares, last reported balance as of Nov 3, 2015
Frank Carroccia	Jun 10, 2015	2,400 shares, last reported balance as of Jun 9, 2015
Andrew Lietz	May 22, 2015	467,496 shares, last reported balance as of May 21, 2015
Di Yang	May 22, 2015	No balance on record
Jerome Monteith	May 29, 2014	No balance on record
Dean Secord	May 12, 2014	131,665 shares, last reported balance as of May 9, 2014
Alessandro Perrotta	Nov 8, 2010	No balance on record
Udo Naujoks	Jul 23, 2008	No balance on record
Stephan Memmen	Dec 11, 2007	No balance on record
Timothy Cohane	Nov 29, 2007	No balance on record
Paul Jona	Oct 29, 2007	No balance on record
Jamie Fraser	Oct 18, 2007	No balance on record
Mark Twaalfhoven	Jun 7, 2005	No balance on record
Michael Michelson	Feb 9, 2005	35,277,488 shares, last reported balance as of Oct 27, 2004
Andrew Clarkson	Jan 4, 2005	336,000 shares, last reported balance as of Dec 31, 2004
James Greene Jr.	Oct 4, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
Scott Nuttall	Oct 4, 2004	No balance on record
Marc Lipschultz	Oct 4, 2004	No balance on record
Henry Kravis	Apr 2, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
KKR 1996 FUND L P	Feb 25, 2004	113,208,448 shares, last reported balance as of Feb 23, 2004
KKR 1996 GP LLC	Feb 25, 2004	113,208,448 shares, last reported balance as of Feb 23, 2004
KKR ASSOCIATES 1996 L P	Feb 25, 2004	113,208,448 shares, last reported balance as of Feb 23, 2004
KKR ASSOCIATES NXS LP	Feb 25, 2004	25,195,936 shares, last reported balance as of Feb 23, 2004
NXS ASSOCIATES LP	Feb 25, 2004	25,195,936 shares, last reported balance as of Feb 23, 2004
KKR NXS LLC	Feb 25, 2004	25,195,936 shares, last reported balance as of Feb 23, 2004
Edward Gilhuly	Feb 25, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
Perry Golkin	Feb 25, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
Paul Raether	Feb 25, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
George Roberts	Feb 25, 2004	139,407,584 shares, last reported balance as of Feb 23, 2004
Scott Stuart	Feb 25, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
Todd Fisher	Feb 25, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
Alexandar Navab Jr.	Feb 25, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
Johannes Huth	Feb 25, 2004	139,220,096 shares, last reported balance as of Feb 23, 2004
Glen Durham	Oct 16, 2003	No balance on record
Neil Richarrdson	Aug 19, 2003	300,303,264 shares, last reported balance as of Aug 15, 2003

Amphenol insiders sold $512M 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 Amphenol CEO selling stock?

Why are Amphenol insiders selling?

Are any Amphenol insiders buying?

How much of their stake did Amphenol insiders sell?

The evidence

No plan disclosed · $512M

Purchases · 1 buyer (1 trade)

Sales by month