Jeffrey G. Black - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 4, 2026
Jeffrey G. Black is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $66K. Lifetime open-market sales: $206K.
Profile
Jeffrey G. Black is the Chief Financial Officer at EXAGEN INC. (XGN). Black has reported 4 insider filings with the SEC since 2024. The most recent filing was in March 2026.
| Role | Chief Financial Officer |
|---|---|
| Notability | 34/100 |
Board memberships
- EXAGEN INC.
Reported roles
- Chief Financial Officer
Trading Pattern
InsiderAlpha's records for Jeffrey G. Black go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. The typical open-market purchase is $66K (1 buy totaling $66K). The largest single buy on record is $66K of XGN in 2024. Sales side: 2 recorded sales totaling $206K, so the filing history runs sell-heavy by dollar value. 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 Jeffrey G. Black 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.
- Chief Financial Officer at EXAGEN INC. (XGN) - 4 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-16 | XGN | EXAGEN INC. | A - Grant or award | 1.5K | $3.08 | $5K |
| 2026-03-16 | XGN | EXAGEN INC. | A - Grant or award | 75.0K | $3.16 | $237K |
| 2026-02-26 | XGN | EXAGEN INC. | S - Open-market sale | 1.6K | $3.61 | $6K |
| 2025-09-02 | XGN | EXAGEN INC. | S - Open-market sale | 20.5K | $9.79 | $200K |
| 2024-11-20 | XGN | EXAGEN INC. | P - Open-market purchase | 22.3K | $2.98 | $66K |
Most Active Insiders Right Now
Jeffrey G. Black has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Arun Jeldi
- Jan Philipp Jenisch
- Marc Johnson
- James Jones
- Andrew T. Kaplan
- A. J. Kazimi
- Michael John Kazley
- Kennedy Lewis Investment Holdings II LLC
Frequently Asked Questions
Who is Jeffrey G. Black?
Jeffrey G. Black is the Chief Financial Officer at EXAGEN INC. (XGN). Black has reported 4 insider filings with the SEC since 2024. The most recent filing was in March 2026.…
Has Jeffrey G. Black been buying or selling stock?
Recorded transactions: 1 open-market purchase ($66K) and 2 open-market sales ($206K) across all tracked filings.
Where can I see all of Jeffrey G. Black'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 Jeffrey G. Black profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.