Adam B. Weinstein - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 4, 2026
Adam B. Weinstein is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $1.41M. Historical track record: 2/5 stars across 5 tracked purchases.
Profile
Adam B. Weinstein serves as EVP, CAO and Director of New Mountain Finance Corp (NMFC). Weinstein has also held reporting roles at New Mountain Private Credit Fund. Weinstein has reported 5 insider filings with the SEC since 2024. The most recent filing was in March 2026.
| Role | EVP, CAO and Director, Director |
|---|---|
| Notability | 40/100 |
Board memberships
- New Mountain Finance Corp
- New Mountain Private Credit Fund
Reported roles
- EVP, CAO and Director
- Executive Vice President
Awards & honors
- Executive leadership role within New Mountain Capital's fund businesses
- Director of New Mountain Finance Corp
- Oversees financial reporting and administrative functions for the fund complex
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★☆☆☆ (2/5) |
|---|---|
| Total purchases tracked | 5 |
| Purchases with forward-return data | 5 |
| 30-day win rate | 40% |
| 90-day win rate | 60% |
| Avg 5-day return | +2.40% |
| Avg 30-day return | +1.76% |
| Avg 90-day return | +2.46% |
| Best 30-day return | +9.81% |
Trading Pattern
InsiderAlpha's records for Adam B. Weinstein go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $282K (5 buys totaling $1.41M). The largest single buy on record is $499K of NMFC in 2025. 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 Adam B. Weinstein 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.
- EVP, CAO and Director, Director at New Mountain Finance Corp (NMFC) - 4 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-18 | NMFC | New Mountain Finance Corp | P - Open-market purchase | 12.9K | $7.61 | $98K |
| 2026-03-03 | NMFC | New Mountain Finance Corp | P - Open-market purchase | 3.3K | $7.73 | $26K |
| 2026-03-03 | NMFC | New Mountain Finance Corp | P - Open-market purchase | 38.4K | $7.76 | $298K |
| 2025-09-16 | NMFC | New Mountain Finance Corp | P - Open-market purchase | 49.8K | $10.03 | $499K |
| 2024-12-19 | - | New Mountain Private Credit Fund | J - Other acquisition / disposition | 55.2K | - | |
| 2024-11-06 | NMFC | New Mountain Finance Corp | P - Open-market purchase | 45.0K | $10.87 | $489K |
Most Active Insiders Right Now
Adam B. Weinstein 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:
- AEI Capital Ltd
- Noubar Afeyan
- Behzad Aghazadeh
- Srinivas Akkaraju
- Amwal Investments LLC
- Apollo Principal Holdings B GP, LLC
- Apollo Principal Holdings B, L.P.
- ARCH Venture Partners XII, LLC
Frequently Asked Questions
Who is Adam B. Weinstein?
Adam B. Weinstein serves as EVP, CAO and Director of New Mountain Finance Corp (NMFC). Weinstein has also held reporting roles at New Mountain Private Credit Fund. Weinstein has reported 5 insider filings with the SEC since 2024. The most recent filing was in March 2026.…
Has Adam B. Weinstein been buying or selling stock?
Recorded transactions: 5 open-market purchases ($1.41M) and 0 open-market sales across all tracked filings.
How accurate is Adam B. Weinstein's historical track record?
Across 5 tracked purchases, Adam B. Weinstein averaged +1.8% avg 30-day return with a 40% 30-day win rate. InsiderAlpha rates the track record at 2/5 stars.
Where can I see all of Adam B. Weinstein'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 Adam B. Weinstein profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.