GUSTAFSON KURT A
Director · Officer · XNCR, OABI
As of 2026-09-16, GUSTAFSON KURT A has 37 Form 4 transactions on record across 2 companies — 17 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in June in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-15 | XNCR | Sale | 5,474 @ $12.31 | $67K | −27.1% of holding | 14,709 | Form 4 |
| 2026-04-07 | OABI | Sale | 6,913 @ $1.49 | $10K | −2.6% of holding | 261,483 | Form 4 |
| 2026-02-18 | OABI | Sale | 9,301 @ $1.71 | $16K | −3.3% of holding | 268,851 | Form 4 |
| 2026-02-17 | OABI | Sale | 6,828 @ $1.70 | $12K | −2.6% of holding | 259,402 | Form 4 |
| 2025-12-08 | OABI | Sale | 23,922 @ $1.96 | $47K | −8.6% of holding | 252,688 | Form 4 |
| 2025-06-16 | XNCR | Sale | 2,993 @ $9.22 | $28K | −12.9% of holding | 20,183 | Form 4 |
| 2025-04-07 | OABI | Sale | 7,206 @ $2.00 | $14K | −3.1% of holding | 223,828 | Form 4 |
| 2025-04-01 | OABI | Sale | 11,963 @ $2.37 | $28K | −5.2% of holding | 217,492 | Form 4 |
| 2025-02-19 | OABI | Sale | 7,255 @ $3.67 | $27K | −3.4% of holding | 206,211 | Form 4 |
| 2025-01-21 | OABI | Sale | 15,526 @ $3.24 | $50K | −6.8% of holding | 212,720 | Form 4 |
| 2024-12-09 | OABI | Sale | 23,871 @ $4.13 | $99K | −10.6% of holding | 200,661 | Form 4 |
26 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-06-16 | XNCR | Award / grant | 10,302 | 25,011 | Form 4 |
| 2026-06-16 | XNCR | Award / grant | 20,604 | 20,604 | Form 4 |
| 2026-04-07 | OABI | Option exercise | 13,542 | 111,042 | Form 4 |
| 2026-04-07 | OABI | Option exercise | 13,542 | 268,396 | Form 4 |
| 2026-02-18 | OABI | Option exercise | 18,750 | 278,152 | Form 4 |
| 2026-02-18 | OABI | Option exercise | 18,750 | 64,584 | Form 4 |
| 2026-02-18 | OABI | Award / grant | 600,000 | 600,000 | Form 4 |
| 2026-02-18 | OABI | Award / grant | 60,000 | 124,584 | Form 4 |
| 2026-02-16 | OABI | Option exercise | 13,542 | 83,334 | Form 4 |
| 2026-02-16 | OABI | Option exercise | 13,542 | 266,230 | Form 4 |
| 2025-12-07 | OABI | Option exercise | 46,500 | 276,610 | Form 4 |
| 2025-12-07 | OABI | Option exercise | 46,500 | 96,876 | Form 4 |
| 2025-06-12 | XNCR | Award / grant | 27,372 | 27,372 | Form 4 |
| 2025-06-12 | XNCR | Award / grant | 13,686 | 23,176 | Form 4 |
| 2025-04-07 | OABI | Option exercise | 13,542 | 143,376 | Form 4 |
| 2025-04-07 | OABI | Option exercise | 13,542 | 231,034 | Form 4 |
| 2025-04-01 | OABI | Option exercise | 23,244 | 156,918 | Form 4 |
| 2025-04-01 | OABI | Option exercise | 23,244 | 229,455 | Form 4 |
| 2025-02-18 | OABI | Award / grant | 337,500 | 337,500 | Form 4 |
| 2025-02-18 | OABI | Award / grant | 56,250 | 180,162 | Form 4 |
| 2025-02-16 | OABI | Option exercise | 13,541 | 213,466 | Form 4 |
| 2025-02-16 | OABI | Option exercise | 13,541 | 123,912 | Form 4 |
| 2025-01-17 | OABI | Award / grant | 27,585 | 228,246 | Form 4 |
| 2024-12-07 | OABI | Option exercise | 46,501 | 137,453 | Form 4 |
| 2024-12-07 | OABI | Option exercise | 46,501 | 224,532 | Form 4 |
| 2024-12-07 | OABI | Option exercise | 46,501 | 224,532 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.