← United States · Coverage record
US · SEC FORM 4
MACROGENICS INC
MGNX · Nasdaq · CIK 0001125345 · Healthcare · Biotechnology
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
12 Form 4 transaction lines observed in the same window
1 sales · 11 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 5 additional owner(s) remain in Form 4 evidence.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-08-20 · HEIDEN WILLIAM K.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 7,039,348
- Previous report
- 7,032,428
- Avg daily volume
- 645,909
- Days to cover
- 10.9
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2025-08-20 | HEIDEN WILLIAM K | Purchase (P) | Common Stock | 49,500 | USD 1.49 | USD 73,755 | SEC filing ↗ |
| 2025-08-19 | HEIDEN WILLIAM K | Purchase (P) | Common Stock | 50,500 | USD 1.52 | USD 76,760 | SEC filing ↗ |
| 2023-10-02 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 150,000 | USD 4.46 | USD 669,000 | SEC filing ↗ |
| 2023-09-07 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 200,000 | USD 5.26 | USD 1,052,000 | SEC filing ↗ |
| 2023-08-30 | HURWITZ EDWARD | Purchase (P) | Common Stock | 15,000 | USD 4.91 | USD 73,650 | SEC filing ↗ |
| 2023-02-14 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 500,000 | USD 5.07 | USD 2,535,000 | SEC filing ↗ |
| 2023-01-19 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 150,000 | USD 5.30 | USD 795,000 | SEC filing ↗ |
| 2022-12-27 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 200,000 | USD 5.61 | USD 1,122,000 | SEC filing ↗ |
| 2022-12-23 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 200,000 | USD 5.88 | USD 1,176,000 | SEC filing ↗ |
| 2022-11-22 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 300,000 | USD 5.96 | USD 1,788,000 | SEC filing ↗ |
| 2022-10-24 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 250,000 | USD 4.36 | USD 1,090,000 | SEC filing ↗ |
| 2022-10-21 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 250,000 | USD 4.63 | USD 1,157,500 | SEC filing ↗ |
| 2022-10-20 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 285,977 | USD 4.00 | USD 1,143,908 | SEC filing ↗ |
| 2022-10-19 | BB BIOTECH AG; BIOTECH TARGET N V | Purchase (P) | Common Stock | 168,422 | USD 3.70 | USD 623,161 | SEC filing ↗ |
| 2022-06-15 | Karrels James | Purchase (P) | Common Stock | 40,000 | USD 2.47 | USD 98,800 | SEC filing ↗ |
Form 4 evidence
50 transaction lines in the latest 365-day window; 244 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-06 | Bonvini Ezio | Option exercise / conversion (M) | Common Stock | 8,000 | USD 2.60 | USD 20,800 | SEC filing ↗ |
| 2026-08-19 | Peters Jeffrey Stuart | Sale (S) | Common Stock | 31,105 | USD 4.15 | USD 129,086 | SEC filing ↗ |
| 2026-08-17 | Bonvini Ezio | Option exercise / conversion (M) | Common Stock | 40,000 | USD 2.60 | USD 104,000 | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-06 | Bonvini Ezio | Option exercise / conversion (M) | Common Stock | 8,000 | USD 2.60 | USD 20,800 | SEC filing ↗ |
| 2026-08-19 | Peters Jeffrey Stuart | Sale (S) | Common Stock | 31,105 | USD 4.15 | USD 129,086 | SEC filing ↗ |
| 2026-08-17 | Bonvini Ezio | Option exercise / conversion (M) | Common Stock | 40,000 | USD 2.60 | USD 104,000 | SEC filing ↗ |
| 2026-05-18 | STUMP DAVID C | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-05-18 | SIEGEL JAY PHILIP | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-05-18 | O'Brien Federica F. | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-05-18 | Liu Margaret | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-05-18 | Jackson Scott Thomas | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-05-18 | HURWITZ EDWARD | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-05-18 | HEIDEN WILLIAM K | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-05-18 | Ferrante Karen Jean | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-05-18 | Chhabra Meenu | Option exercise / conversion (M) | Common Stock | 3,750 | USD — | USD — | SEC filing ↗ |
| 2026-02-15 | Spitznagel Thomas | Option exercise / conversion (M) | Common Stock | 13,332 | USD — | USD — | SEC filing ↗ |
| 2026-02-15 | Spitznagel Thomas | Tax withholding (F) | Common Stock | 5,520 | USD 1.71 | USD 9,439 | SEC filing ↗ |
| 2026-02-15 | Smith Beth Ann | Option exercise / conversion (M) | Common Stock | 1,095 | USD — | USD — | SEC filing ↗ |
| 2026-02-15 | Smith Beth Ann | Tax withholding (F) | Common Stock | 423 | USD 1.71 | USD 723 | SEC filing ↗ |
| 2026-02-15 | Risser Eric Blasius | Option exercise / conversion (M) | Common Stock | 16,665 | USD — | USD — | SEC filing ↗ |
| 2026-02-15 | Risser Eric Blasius | Tax withholding (F) | Common Stock | 6,433 | USD 1.71 | USD 11,000 | SEC filing ↗ |
| 2026-02-15 | Peters Jeffrey Stuart | Option exercise / conversion (M) | Common Stock | 13,332 | USD — | USD — | SEC filing ↗ |
| 2026-02-15 | Peters Jeffrey Stuart | Tax withholding (F) | Common Stock | 5,147 | USD 1.71 | USD 8,801 | SEC filing ↗ |
| 2026-02-15 | Koenig Scott | Option exercise / conversion (M) | Common Stock | 21,165 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-15 | Karrels James | Option exercise / conversion (M) | Common Stock | 14,999 | USD — | USD — | SEC filing ↗ |
| 2026-02-15 | Karrels James | Tax withholding (F) | Common Stock | 5,790 | USD 1.71 | USD 9,901 | SEC filing ↗ |
| 2026-02-15 | Bonvini Ezio | Option exercise / conversion (M) | Common Stock | 16,665 | USD — | USD — | SEC filing ↗ |
| 2026-02-15 | Bonvini Ezio | Tax withholding (F) | Common Stock | 6,433 | USD 1.71 | USD 11,000 | SEC filing ↗ |
| 2026-02-08 | Spitznagel Thomas | Option exercise / conversion (M) | Common Stock | 8,999 | USD — | USD — | SEC filing ↗ |
| 2026-02-08 | Spitznagel Thomas | Tax withholding (F) | Common Stock | 3,186 | USD 1.81 | USD 5,767 | SEC filing ↗ |
| 2026-02-08 | Smith Beth Ann | Option exercise / conversion (M) | Common Stock | 1,583 | USD — | USD — | SEC filing ↗ |
| 2026-02-08 | Smith Beth Ann | Tax withholding (F) | Common Stock | 612 | USD 1.81 | USD 1,108 | SEC filing ↗ |
| 2026-02-08 | Risser Eric Blasius | Option exercise / conversion (M) | Common Stock | 11,166 | USD — | USD — | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | MGNX |
| CIK | 0001125345 |
| Sector | Healthcare |
| Industry | Biotechnology Yahoo Finance |
| SEC SIC | 2834 Pharmaceutical Preparations |
| Exchange | Nasdaq |
Data coverage
| Local Form 4 history | 244 transaction lines from 2020-01-30 to 2026-10-06 23 P purchase lines · 50 S sale lines · 171 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.