William T. Harrington - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
William T. Harrington has filed 1 SEC Form 4 filing across 1 company in the last 90 days - buying. Lifetime open-market purchases: $8.00M.
Profile
William T. Harrington is Director at Mobia Medical, Inc. (MOBI). Harrington has reported 1 insider filing with the SEC since 2026. The most recent filing was in May 2026.
| Role | Director, 10% Owner |
|---|---|
| Notability | 36/100 |
Board memberships
- Mobia Medical, Inc.
Reported roles
- Director
Awards & honors
- Directorship at Mobia Medical, Inc. (as of 2026)
Trading Pattern
InsiderAlpha's records for William T. Harrington go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. The typical open-market purchase is $4.00M (2 buys totaling $8.00M). The largest single buy on record is $4.00M of MOBI in 2026. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role William T. Harrington has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Director, 10% Owner at Mobia Medical, Inc. (MOBI) - 1 filing, 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-12 | MOBI | Mobia Medical, Inc. | P - Open-market purchase | 266.7K | $15.00 | $4.00M |
| 2026-05-12 | MOBI | Mobia Medical, Inc. | P - Open-market purchase | 266.7K | $15.00 | $4.00M |
| 2026-05-12 | MOBI | Mobia Medical, Inc. | J - Other acquisition / disposition | 872.8K | - | |
| 2026-05-12 | MOBI | Mobia Medical, Inc. | J - Other acquisition / disposition | 1.46M | - | |
| 2026-05-12 | MOBI | Mobia Medical, Inc. | J - Other acquisition / disposition | 264.7K | - | |
| 2026-05-12 | MOBI | Mobia Medical, Inc. | J - Other acquisition / disposition | 284.3K | - |
Companies - Last 90 Days
- Mobia Medical, Inc. (MOBI) - 1 filing, last 2026-05-12
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies William T. Harrington has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Osage University GP III, LLC - $8.00M of MOBI open-market activity in the last 12 months
- Cynthia L. Lucchese - $1.88M of MOBI open-market activity in the last 12 months
- Casey M. Tansey - $1000K of MOBI open-market activity in the last 12 months
- Green Park & Golf Ventures - Houston, LLC - $908K of MOBI open-market activity in the last 12 months
- Green Park & Golf Ventures II, LLC - $500K of MOBI open-market activity in the last 12 months
- Dana G. Mead Jr. - $105K of MOBI open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Gregg Williams
- Stephen T. Wills
- WINMILL CO. INC
- Caroline Young
- Jeffrey Yu
- George Raymond Zage III
- Payam Zamani
- Mahkam Zanganeh
Frequently Asked Questions
Who is William T. Harrington?
William T. Harrington is Director at Mobia Medical, Inc. (MOBI). Harrington has reported 1 insider filing with the SEC since 2026. The most recent filing was in May 2026.…
How many SEC Form 4 filings has William T. Harrington submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has William T. Harrington been buying or selling stock?
Recorded transactions: 2 open-market purchases ($8.00M) and 0 open-market sales across all tracked filings.
Where can I see all of William T. Harrington's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live William T. Harrington profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.