GLW insider trading

SEC Form 4 transactions reported by Corning Incorporated insiders, officers, directors, and 10%+ beneficial owners. Sourced from EDGAR.

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Recent GLW insider transactions

The 20 most recent non-derivative Form 4 transactions reported by Corning Incorporated insiders. Buys are highlighted; the transaction code column matches SEC Form 4 codes (P = open-market purchase, S = sale, A = grant, M = option exercise, F = tax withholding).

Date	Code	Insider	Role	Shares	Price	Value
2026-06-22	F	Gullo Michelle L	Senior Vice President & CHRO	18,378	$210	$3.9M
2026-06-09	M	WEEKS WENDELL P	Chairman, CEO and President, Director	100,000	$27	$2.7M
2026-06-09	S	WEEKS WENDELL P	Chairman, CEO and President, Director	100,000	$186	$19M
2026-05-22	M	Amin Jaymin	SVP and Chief Tech. Officer	7,917	$27	$214K
2026-05-22	S	Amin Jaymin	SVP and Chief Tech. Officer	27,395	$192	$5.3M
2026-05-15	S	Nelson Avery H III	Executive Vice President & COO	20,000	$196	$3.9M
2026-05-14	M	Fang Li	SVP, Corning Intl & NBD, Solar	8,725	$20	$171K
2026-05-13	G	Becker Stefan	SVP, Finance & Corp Controller	126	n/a
2026-05-13	S	Verkleeren Ronald L	SVP Emerging Innovations Group	10,000	$208	$2.1M
2026-05-11	S	Seetharam Soumya	Senior Vice President & CDIO	20,000	$206	$4.1M
2026-05-11	S	Zhang John Z	Exec. Vice President & CCDO	10,000	$198	$2.0M
2026-05-11	S	TILLMAN MICHAUNE D	SVP and General Counsel	3,260	$207	$675K
2026-05-08	S	STEVERSON LEWIS A	Vice Chairman, EVP and CLAO	27,750	$196	$5.4M
2026-05-08	S	Gullo Michelle L	Senior Vice President & CHRO	5,315	$189	$1.0M
2026-05-08	S	Becker Stefan	SVP, Finance & Corp Controller	21,000	$188	$3.9M
2026-05-07	S	Schlesinger Edward A	Exec. Vice President and CFO	22,562	$186	$4.2M
2026-05-06	S	Zhang John Z	Exec. Vice President & CCDO	15,000	$185	$2.8M
2026-05-04	F	TILLMAN MICHAUNE D	SVP and General Counsel	2,946	$160	$471K
2026-04-29	F	Becker Stefan	SVP, Finance & Corp Controller	2,795	$152	$425K
2026-04-29	M	Becker Stefan	SVP, Finance & Corp Controller	429	n/a

Why GLW filings on EdgarKit beat the alternatives

Real-time, not batched. Yahoo Finance and most aggregators batch the SEC daily index. EdgarKit polls EDGAR every 30 seconds, so new GLW filings appear here within a minute of SEC acceptance.
Developer-ready JSON. Whalewisdom and OpenInsider give you HTML tables you can read but not parse cleanly. Every transaction shown above is also available as structured JSON via the API.
Full transaction codes. Yahoo collapses Form 4 lines into 'Buy' / 'Sell'. We keep the raw transaction code (P, S, A, M, F, etc.) so you can filter compensation noise out of trading signal.
Footnote text preserved. Rule 10b5-1 plan references, indirect ownership disclosures, and gift transfers are all retained in the API response, not stripped.
Free tier covers it. 1,000 API calls/month, no credit card. Most ticker-specific workflows fit comfortably in free.

What insider trading data covers for GLW

Corning Incorporated (CIK 24741) reports Section 16 insider transactions on Form 4 within two business days. Each filing carries the transaction date, transaction code (P for open-market purchase, S for sale, M for option exercise, F for tax withholding), shares, price, and post-transaction holdings. Optional footnotes disclose Rule 10b5-1 plan references and indirect ownership relationships.

How to interpret GLW insider activity

Treat each filing line through three filters: the transaction code, the role of the filer (officer carries more signal than director), and the dollar value relative to the company's market cap. Open-market purchases (P) by C-suite officers carry the strongest bullish signal. Sales (S) referencing a Rule 10b5-1 plan in the footnotes are pre-arranged and should be discounted. See how to read a Form 4 for the full walkthrough.

Get GLW insider data via API

Pull recent GLW Form 4 filings, filtered to open-market purchases above $100k:

curl "https://api.edgarkit.com/v1/filings?ticker=GLW&form_type=4&transaction_code=P&min_value=100000&limit=20" \
  -H "Authorization: Bearer YOUR_API_KEY"

Subscribe via webhook to receive every new GLW Form 4 in real time:

curl -X POST "https://api.edgarkit.com/v1/webhooks" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://your-server.com/edgarkit-events",
    "filters": {"form_types": ["4"], "tickers": ["GLW"]}
  }'

Cluster buying detection for GLW

The strongest insider signal at the issuer level is cluster buying: three or more distinct insiders placing open-market purchases within a 7-14 day window. For the complete pattern detector, see how to detect insider cluster buying.