Aldeyra Therapeutics, Inc. (ALDX) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-06-11

Aldeyra Therapeutics, Inc. (ALDX) has filed 8 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-11. 4 Form 8-K material event filings were reported by ALDX in the last 90 days. InsiderAlpha tracks every ALDX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Aldeyra Therapeutics, Inc. (ALDX)

SEC CIK	0001341235

90-Day SEC Filing Activity

Form 4 filings (90d)	8
Form 8-K filings (90d)	4
Latest Form 4 filing	2026-06-11

Recent ALDX Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-06-03	Brady Todd C	President and CEO	P — Open-market purchase	250.0K	$1.67	$418K	SEC
2026-03-19	DOUGLAS RICHARD	Insider	P — Open-market purchase	70.0K	$1.40	$98K	SEC
2026-03-18	Alfieri Michael	Principal Financial Officer	P — Open-market purchase	5.0K	$1.42	$7K	SEC
2025-08-13	Alfieri Michael	Principal Financial Officer	P — Open-market purchase	2.5K	$5.30	$13K	SEC
2025-08-11	Machatha Stephen	Chief Development Officer	S — Open-market sale	22.1K	$5.15	$114K	SEC
2025-04-03	PERCEPTIVE ADVISORS LLC	10% Owner	S — Open-market sale	3.40M	$1.42	$4.83M	SEC
2023-04-12	Miller-Rich Nancy	Insider	P — Open-market purchase	509	$10.13	$5K	SEC
2021-05-03	Miller-Rich Nancy	Insider	P — Open-market purchase	413	$12.81	$5K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Aldeyra Therapeutics, Inc. (ALDX). Updated in real time as new filings are submitted to the SEC.

Most-Active ALDX Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
DOUGLAS RICHARD	3	—
Phillips Gary M.	3	—
Bronstein Ben	3	—
Clark William D	2	—
Walker Neal	2	—

Recent ALDX Form 8-K Material Events

2026-07-15 — Item 8.01 [SEC]
2026-06-10 — Item 5.02, 5.07, 7.01, 9.01 [SEC]
2026-05-01 — Item 7.01, 9.01 [SEC]
2026-04-20 — Item 5.02 · Leadership · neutral [SEC]
Martin J. Joyce, a member of Aldeyra Therapeutics' Board of Directors, notified the company on April 20, 2026 that he will not stand for re-election at the 2026 annual stockholders meeting. Joyce will continue serving until his term expires at the annual meeting, and the decision
2026-04-01 — Item 8.01 · Financing · neutral [SEC]
Aldeyra Therapeutics paid off $15 million in outstanding borrowings and terminated its Hercules Capital credit facility on April 1, 2026, at the facility's maturity date. The company stated that existing cash and marketable securities are expected to support operations into 2028.

Recent Insider Filings

2026-06-11 — Miller-Rich Nancy (Insider)
2026-06-11 — DOUGLAS RICHARD (Insider)
2026-06-11 — Phillips Gary M. (Insider)
2026-06-11 — Clark William D (Insider)
2026-06-11 — Walker Neal (Insider)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ALDX insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

ALDX Insider Trading — FAQ

What is the latest insider trade for ALDX?: Aldeyra Therapeutics, Inc. (ALDX) had 8 insider filings in the last 90 days, with the most recent on 2026-06-11. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying ALDX stock?: 0 insider purchases of ALDX were filed in the last 90 days.
How many insiders are selling ALDX stock?: 0 insider sales of ALDX were filed in the last 90 days.
Where can I see ALDX SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every ALDX SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

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