What SEC filings does Amphenol Corporation submit to the SEC?

Amphenol Corporation (APH) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about APH?

A Form 4 for APH discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Amphenol Corporation?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for APH?

The 10-K is Amphenol Corporation's annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all APH SEC filings directly on EDGAR?

You can view all historical Amphenol Corporation filings on the SEC EDGAR company page for APH. Each filing card on this page links directly to the original SEC document.

How often does Amphenol Corporation file with the SEC?

Amphenol Corporation files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling APH shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

APH SEC Filing News — Amphenol Corporation

Latest SEC filings for Amphenol Corporation (APH) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-06.

Amphenol Corporation, together with its subsidiaries, designs, manufactures, and markets electrical, electronic, and fiber optic connectors in the United States, China, and internationally. It operates through three segments: Communications Solutions, Harsh Environment Solutions, and Interconnect and Sensor Systems. The company offers connectors and connector systems, including high speed, radio frequency, power, fiber optic and other interconnect products; busbars and power distribution systems…

Sector: Technology Industry: Electronic Components Market Cap: $195.7B CIK: 820313

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for APH currently lean bearish. Of the 20 filing records displayed, 4 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.

APH Filing Activity Snapshot 2026-05-27 — 2026-10-06

Insider Transactions (Form 4)

0 buys vs 4 sells

Net insider selling in this period — insiders sell for many reasons beyond conviction.

Largest Form 144 Filing

$110.99M

NORWITT RICHARD ADAM (Director, President & CEO) · 2026-08-03

686,104 shares · Form 4

Form 144 Notices

Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 8 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 8 filings in this group are Form 4s for Amphenol Corporation.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 8 insider filings shown, the breakdown is 4 open-market sale, 3 compensation award and 1 gift. 4 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×4: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Compensation award ×3: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Gift ×1: Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Form 4 Gift Tax / Compensation Filing 2026-08-06

APH insider Form 4 filed for equity award, exercise, or tax withholding

Lampo Craig A (EVP& CFO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	54,547	—	—

Filing: Form 4 (Insider Transaction) Insider: Lampo Craig A (EVP& CFO) Shares: 54,547

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-05

APH insider Silverman David M (EVP, Human Resources) sold 120,000 shares (~$20.91M)

Silverman David M, listed as EVP, Human Resources at AMPHENOL CORP /DE/, reported an open-market sale of 120,000 APH shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	120,000	$22.00	$2.64M
`S`	Open-market sale	120,000	$174.24	$20.91M
`M`	Option exercise derivative · Stock Option	120,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Silverman David M (EVP, Human Resources) Shares: 120,000 Est. Value: $20.91M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-05

APH insider Lampo Craig A (EVP& CFO) sold 193,200 shares (~$32.32M)

Lampo Craig A, listed as EVP& CFO at AMPHENOL CORP /DE/, reported an open-market sale of 193,200 APH shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	193,200	$22.37	$4.32M
`S`	Open-market sale	193,200	$167.31	$32.32M
`M`	Option exercise derivative · Stock Option	193,200	—	—

Filing: Form 4 (Insider Transaction) Insider: Lampo Craig A (EVP& CFO) Shares: 193,200 Est. Value: $32.32M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-05

APH insider D'AMICO LANCE E (EVP, Secretary & GenCounsel) sold 100,000 shares (~$16.19M)

D'AMICO LANCE E, listed as EVP, Secretary & GenCounsel at AMPHENOL CORP /DE/, reported an open-market sale of 100,000 APH shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	50,000	$22.55	$1.13M
`S`	Open-market sale	50,000	$161.99	$8.10M
`M`	Option exercise	40,000	$22.37	$894.9K
`S`	Open-market sale	40,000	$161.82	$6.47M
`M`	Option exercise	10,000	$22.55	$225.5K
`S`	Open-market sale	10,000	$161.82	$1.62M
`M`	Option exercise derivative · Stock Option	50,000	—	—
`M`	Option exercise derivative · Stock Option	40,000	—	—
`M`	Option exercise derivative · Stock Option	10,000	—	—

Filing: Form 4 (Insider Transaction) Insider: D'AMICO LANCE E (EVP, Secretary & GenCounsel) Shares: 100,000 Est. Value: $16.19M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-03

APH insider NORWITT RICHARD ADAM (Director, President & CEO) sold 686,104 shares (~$110.99M)

NORWITT RICHARD ADAM, listed as Director, President & CEO at AMPHENOL CORP /DE/, reported an open-market sale of 686,104 APH shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	500,000	$22.37	$11.19M
`S`	Open-market sale	500,000	$161.57	$80.79M
`M`	Option exercise	186,104	$22.37	$4.16M
`S`	Open-market sale	186,104	$162.27	$30.20M
`M`	Option exercise derivative · Stock Option	500,000	—	—
`M`	Option exercise derivative · Stock Option	186,104	—	—

Filing: Form 4 (Insider Transaction) Insider: NORWITT RICHARD ADAM (Director, President & CEO) Shares: 686,104 Est. Value: $110.99M

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-27

APH insider Form 4 filed for equity award, exercise, or tax withholding

WALTER LUC (President, HES Division) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Stock Option	108,809	—	—

Filing: Form 4 (Insider Transaction) Insider: WALTER LUC (President, HES Division)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-27

APH insider Form 4 filed for equity award, exercise, or tax withholding

Straub Peter (President, ISS Division) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Stock Option	108,809	—	—

Filing: Form 4 (Insider Transaction) Insider: Straub Peter (President, ISS Division)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-27

APH insider Form 4 filed for equity award, exercise, or tax withholding

Silverman David M (EVP, Human Resources) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Stock Option	70,690	—	—

Filing: Form 4 (Insider Transaction) Insider: Silverman David M (EVP, Human Resources)

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 7 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Amphenol Corporation has 7 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-08-05

APH Form 144 filed for proposed insider sale

An insider at AMPHENOL CORP /DE/ filed a Form 144 notifying the SEC of an intent to sell shares. Form 144 is a proposed sale notice rather than confirmation that a sale already happened.