Third Harmonic Bio, Inc. (THRD) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2025-08-11

Third Harmonic Bio, Inc. (THRD) — no SEC Form 4 insider filings recorded in the last 90 days. InsiderAlpha tracks every THRD SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Third Harmonic Bio, Inc. (THRD)

SEC CIK	0001923840

Recent THRD Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2025-08-11	Bonita David P	Insider	J — Other acquisition / disposition	5.78M	—	—	SEC
2025-08-11	Holles Natalie C.	CEO	J — Other acquisition / disposition	1.22M	—	—	SEC
2025-08-11	Seidel Hans Martin	Insider	J — Other acquisition / disposition	85.8K	—	—	SEC
2025-08-11	Iwicki Mark T	Insider	J — Other acquisition / disposition	128.6K	—	—	SEC
2024-11-08	Conner Edward R.	Chief Medical Officer	M — Option exercise [10b5-1]	2.1K	$4.20	$9K	SEC
2024-11-08	Conner Edward R.	Chief Medical Officer	S — Open-market sale [10b5-1]	2.1K	$15.00	$32K	SEC
2024-11-01	Atlas Venture Fund XI, L.P.	Insider	J — Other acquisition / disposition [10b5-1]	515.7K	$0.00	—	SEC
2024-10-29	BVF PARTNERS L P/IL	Insider	S — Open-market sale	64.6K	$14.30	$924K	SEC
2024-10-29	BVF PARTNERS L P/IL	Insider	S — Open-market sale	397.0K	$14.30	$5.68M	SEC
2024-10-29	BVF PARTNERS L P/IL	Insider	S — Open-market sale	538.4K	$14.30	$7.70M	SEC
2024-10-28	Conner Edward R.	Chief Medical Officer	M — Option exercise [10b5-1]	2.7K	$4.20	$11K	SEC
2024-10-28	Conner Edward R.	Chief Medical Officer	S — Open-market sale [10b5-1]	2.7K	$15.00	$40K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Third Harmonic Bio, Inc. (THRD). Updated in real time as new filings are submitted to the SEC.

Recent Insider Filings

2025-08-11 — Soloway Thomas P (Insider)
2025-08-11 — Bonita David P (Insider)
2025-08-11 — Holles Natalie C. (CEO)
2025-08-11 — Seidel Hans Martin (Insider)
2025-08-11 — Iwicki Mark T (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 THRD 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

THRD Insider Trading — FAQ

What is the latest insider trade for THRD?: Third Harmonic Bio, Inc. (THRD) had 0 insider filings in the last 90 days, with the most recent on 2025-08-11. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying THRD stock?: 0 insider purchases of THRD were filed in the last 90 days.
How many insiders are selling THRD stock?: 0 insider sales of THRD were filed in the last 90 days.
Where can I see THRD SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every THRD SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live THRD dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.