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Amphenol Corporation (APH) Institutional Ownership & Insider Trading History

Top APH institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.

Section freshness

Price Jun 23, 4:00 PM EDT · Statements Mar 30, 8:00 PM EDT

Source timingDetails

Data freshness

Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.

Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.

PriceLive
Last traded
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Fundamentalsevery 1 day
Provider checked
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Analystevery 1 hr
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Newsevery 15 min
Latest item
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Ownership read

APH insider sentiment: Mixed, sale-heavy.

VANGUARD GROUP INC is the largest institutional holder. 66 sales and 54 purchases appear in the recent Form 4 filings. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.

Insider flow

APH

Purchases4.60M
Sales6.70M

Directional bars ignore awards, gifts, conversions, and tax withholding rows.

Top holder

126.55M

VANGUARD GROUP INC

Insider stance

Mixed, sale-heavy

$403.08M sold / $80.40M bought

Latest filing

May 22, 2026

Most recent holder or insider filing date

Filings shown

240

120 holder / 120 insider

Holder rows
120
Market data source
Latest filing
May 22, 2026
Most recent holder or insider filing date
Increased / initiated
64
56 decreased
Insider rows
120
Market data source

Top 120 institutional holders

Amphenol Corporation (APH) institutional ownership

Ranked by reported share count, with position changes and latest filing dates where ownership data supplies them.

VANGUARD GROUP INC

Rank #1

10.2%

Shares
126.55M
Change
+1.32M
Change %
+106.00%
Filing
Dec 31, 2025

Increased

BLACKROCK

Rank #2

8.25%

Shares
101.97M
Change
-4.17M
Change %
-3.93%
Filing
Mar 31, 2026

Decreased

VANGUARD CAPITAL MANAGEMENT LLC

Rank #3

6.47%

Shares
79.88M
Change
+79.88M
Change %
Filing
Mar 31, 2026

Initiated

FMR LLC

Rank #4

6.43%

Shares
79.48M
Change
-6.94M
Change %
-8.03%
Filing
Mar 31, 2026

Decreased

STATE STREET CORP

Rank #5

4.65%

Shares
57.40M
Change
+482.82K
Change %
+85.00%
Filing
Mar 31, 2026

Increased

JPMORGAN CHASE & CO

Rank #6

3.99%

Shares
49.27M
Change
+14.95M
Change %
+43.54%
Filing
Mar 31, 2026

Increased

VANGUARD PORTFOLIO MANAGEMENT LLC

Rank #7

2.90%

Shares
35.85M
Change
+35.85M
Change %
Filing
Mar 31, 2026

Initiated

CAPITAL INTERNATIONAL INVESTORS

Rank #8

2.86%

Shares
35.33M
Change
+11.65M
Change %
+49.21%
Filing
Mar 31, 2026

Increased

GEODE CAPITAL MANAGEMENT

Rank #9

2.53%

Shares
31.30M
Change
+977.32K
Change %
+3.22%
Filing
Mar 31, 2026

Increased

CAPITAL RESEARCH GLOBAL INVESTORS

Rank #10

2.16%

Shares
26.63M
Change
+10.17M
Change %
+61.82%
Filing
Mar 31, 2026

Increased

PRICE T ROWE ASSOCIATES INC

Rank #11

2.12%

Shares
26.19M
Change
-11.74M
Change %
-30.95%
Filing
Mar 31, 2026

Decreased

NORGES BANK

Rank #12

1.83%

Shares
22.59M
Change
+1.28M
Change %
+5.99%
Filing
Dec 31, 2025

Increased

BANK OF AMERICA CORP

Rank #13

1.67%

Shares
20.68M
Change
-1.28M
Change %
-5.84%
Filing
Mar 31, 2026

Decreased

MORGAN STANLEY

Rank #14

1.42%

Shares
17.51M
Change
-673.50K
Change %
-3.70%
Filing
Mar 31, 2026

Decreased

BANK OF NEW YORK MELLON CORP

Rank #15

1.32%

Shares
16.31M
Change
-1.40M
Change %
-7.89%
Filing
Mar 31, 2026

Decreased

WELLINGTON MANAGEMENT GROUP LLP

Rank #16

1.21%

Shares
15.00M
Change
+2.58M
Change %
+20.79%
Filing
Mar 31, 2026

Increased

MASSACHUSETTS FINANCIAL SERVICES CO

Rank #17

1.13%

Shares
13.96M
Change
-1.95M
Change %
-12.24%
Filing
Mar 31, 2026

Decreased

NORTHERN TRUST CORP

Rank #18

1.09%

Shares
13.47M
Change
-40.73K
Change %
-30.00%
Filing
Mar 31, 2026

Decreased

NUVEEN

Rank #19

1.06%

Shares
13.12M
Change
+5.32M
Change %
+68.24%
Filing
Mar 31, 2026

Increased

ARROWSTREET CAPITAL

Rank #20

0.96%

Shares
11.88M
Change
+26.17K
Change %
+22.00%
Filing
Mar 31, 2026

Increased

Showing 20 of 120 matching institutional rows.Load more institutions

Recent insider transactions

Amphenol Corporation (APH) Form 4 filings

Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.

WALTER, LUC

President, HES Division

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
108.81K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

LAMBA, SANJIV

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
1.55K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

LANE, RITA S.

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
1.55K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

LIVINGSTON, ROBERT

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
1.55K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

FALCK, DAVID P

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
1.55K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

ALTOBELLO, NANCY A.

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
1.55K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

SINGH, PRAHLAD R.

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
1.55K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

WOLFF, ANNE CLARKE

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
1.55K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

D'AMICO, LANCE E

EVP, Secretary & GenCounsel

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
83.02K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

DOHERTY, WILLIAM J

President, CS Division

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
108.81K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

IVAS, MICHAEL R.

SVP & Corporate Controller

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
51.13K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

LAMPO, CRAIG A

Executive VP & CFO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
133.16K
% company
0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
464.99K
% company
0.04%
Price
Not reported
Value
Not reported

Filed May 22, 2026

SILVERMAN, DAVID M

EVP, Human Resources

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
70.69K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

STRAUB, PETER

President, ISS Division

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
108.81K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 22, 2026

D'AMICO, LANCE E

EVP, Secretary & GenCounsel

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
43.09K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 20, 2026

LAMPO, CRAIG A

Executive VP & CFO

SaleOpen-market or direct sale reported on Form 4.
Shares
41.20K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 20, 2026

D'AMICO, LANCE E

EVP, Secretary & GenCounsel

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
21.51K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 20, 2026

D'AMICO, LANCE E

EVP, Secretary & GenCounsel

SaleOpen-market or direct sale reported on Form 4.
Shares
21.51K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 20, 2026

D'AMICO, LANCE E

EVP, Secretary & GenCounsel

SaleOpen-market or direct sale reported on Form 4.
Shares
43.09K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 20, 2026

LAMPO, CRAIG A

Executive VP & CFO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
69.11K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 19, 2026

LAMPO, CRAIG A

Executive VP & CFO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
34.50K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 19, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
17.50K
% company
<0.01%
Price
$143.21
Value
$2,506,107

Filed May 5, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
17.50K
% company
<0.01%
Price
$22.37
Value
$391,519

Filed May 5, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
17.50K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 5, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
52.20K
% company
<0.01%
Price
$142.04
Value
$7,414,998

Filed May 4, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
52.20K
% company
<0.01%
Price
$22.37
Value
$1,167,912

Filed May 4, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
52.20K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 4, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
61.07K
% company
<0.01%
Price
$143.90
Value
$8,787,962

Filed May 1, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
61.07K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed May 1, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
61.07K
% company
<0.01%
Price
$22.37
Value
$1,366,333

Filed May 1, 2026

LAMPO, CRAIG A

Executive VP & CFO

SaleOpen-market or direct sale reported on Form 4.
Shares
100.00K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Feb 18, 2026

LAMPO, CRAIG A

Executive VP & CFO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
100.00K
% company
<0.01%
Price
$22.00
Value
$2,199,500

Filed Feb 18, 2026

D'AMICO, LANCE E

See Remarks

SaleOpen-market or direct sale reported on Form 4.
Shares
50.00K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Feb 18, 2026

D'AMICO, LANCE E

See Remarks

SaleOpen-market or direct sale reported on Form 4.
Shares
50.00K
% company
<0.01%
Price
$149.88
Value
$7,494,155

Filed Feb 18, 2026

D'AMICO, LANCE E

See Remarks

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
50.00K
% company
<0.01%
Price
$22.55
Value
$1,127,625

Filed Feb 18, 2026

LAMPO, CRAIG A

Executive VP & CFO

SaleOpen-market or direct sale reported on Form 4.
Shares
100.00K
% company
<0.01%
Price
$149.98
Value
$14,998,130

Filed Feb 18, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
93.05K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Feb 12, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
515.28K
% company
0.04%
Price
Not reported
Value
Not reported

Filed Feb 12, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
93.05K
% company
<0.01%
Price
$147.17
Value
$13,694,398

Filed Feb 12, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
93.05K
% company
<0.01%
Price
$22.37
Value
$2,081,806

Filed Feb 12, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
515.28K
% company
0.04%
Price
$147.27
Value
$75,883,166

Filed Feb 12, 2026

NORWITT, RICHARD ADAM

Director, President & CEO

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
515.28K
% company
0.04%
Price
$22.37
Value
$11,528,124

Filed Feb 12, 2026

LIVINGSTON, ROBERT

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
10.00K
% company
<0.01%
Price
$128.51
Value
$1,285,080

Filed Feb 5, 2026

IVAS, MICHAEL R.

VP & Corporate Controller

SaleOpen-market or direct sale reported on Form 4.
Shares
25.00K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Feb 4, 2026

IVAS, MICHAEL R.

VP & Corporate Controller

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
25.00K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Feb 4, 2026

IVAS, MICHAEL R.

VP & Corporate Controller

SaleOpen-market or direct sale reported on Form 4.
Shares
25.00K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Feb 4, 2026

IVAS, MICHAEL R.

VP & Corporate Controller

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
25.00K
% company
<0.01%
Price
$22.37
Value
$559,313

Filed Feb 4, 2026

IVAS, MICHAEL R.

VP & Corporate Controller

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
2.54K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Jan 29, 2026

LAMBA, SANJIV

Director

PurchaseOpen-market or direct purchase reported on Form 4.
Shares
548
% company
<0.01%
Price
$136.25
Value
$74,665

Filed Jan 8, 2026

LOEFFLER, MARTIN H

Director

SaleOpen-market or direct sale reported on Form 4.
Shares
3.23K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Dec 10, 2025

NORWITT, RICHARD ADAM

Director, President & CEO

SaleOpen-market or direct sale reported on Form 4.
Shares
75.00K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Dec 9, 2025

Showing 52 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders

Frequently asked

Common questions.

Who are the largest APH shareholders?

VANGUARD GROUP INC is the largest institutional holder of APH, with 126.55 million shares, or about 10.24% of shares outstanding. Additional institutions are ranked by reported share count.

What is institutional ownership of APH?

Amphenol Corporation (APH) has 120 institutional holders on file — 64 that increased or initiated positions and 56 that reduced them, as of the latest filing on Mar 31, 2026.

Where can I see Amphenol Corporation insider transactions?

Amphenol Corporation (APH) has 120 Form 4 insider transactions on file, most recently on May 22, 2026, separated into purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are distinguished from open-market trades.

Are APH insiders buying or selling?

Recent APH insider activity reads Mixed, sale-heavy: 66 sales and 54 purchases. Awards, gifts, conversions, and tax withholding are listed separately because they do not carry the same signal as open-market trades.

Who is the most active APH insider?

NORWITT, RICHARD ADAM is the most active APH insider by absolute share movement, with 2.98 million shares moving across the filing history. Review the action labels before treating that activity as buying or selling.