Atay Oguzhan
Director · Officer · BLLN
As of 2026-09-16, Atay Oguzhan has 131 Form 4 transactions on record across 1 company — 131 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.
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 |
|---|---|---|---|---|---|---|---|
| 2026-09-14 | BLLN | Sale | 7,214 @ $101.44 | $732K | −46.4% of holding | 8,333 | Form 4 |
| 2026-09-14 | BLLN | Sale | 4,465 @ $98.63 | $440K | −17.9% of holding | 20,534 | Form 4 |
| 2026-09-14 | BLLN | Sale | 3,143 @ $101.49 | $319K | −100.0% of holding | 0 | Form 4 |
| 2026-09-14 | BLLN | Sale | 2,666 @ $98.00 | $261K | −1.7% of holding | 157,168 | Form 4 |
| 2026-09-14 | BLLN | Sale | 2,666 @ $98.00 | $261K | −1.6% of holding | 159,834 | Form 4 |
| 2026-09-14 | BLLN | Sale | 2,531 @ $100.58 | $255K | −14.0% of holding | 15,547 | Form 4 |
| 2026-09-14 | BLLN | Sale | 2,456 @ $99.57 | $245K | −12.0% of holding | 18,078 | Form 4 |
| 2026-09-14 | BLLN | Sale | 2,010 @ $100.78 | $203K | −39.0% of holding | 3,143 | Form 4 |
| 2026-09-14 | BLLN | Sale | 1,680 @ $98.64 | $166K | −20.2% of holding | 6,653 | Form 4 |
| 2026-09-14 | BLLN | Sale | 1,500 @ $99.57 | $149K | −22.5% of holding | 5,153 | Form 4 |
| 2026-08-05 | BLLN | Sale | 15,539 @ $150.03 | $2.3M | −100.0% of holding | 0 | Form 4 |
| 2026-08-03 | BLLN | Sale | 9,989 @ $137.25 | $1.4M | −39.7% of holding | 15,198 | Form 4 |
| 2026-08-03 | BLLN | Sale | 6,354 @ $136.42 | $867K | −20.1% of holding | 25,187 | Form 4 |
| 2026-08-03 | BLLN | Sale | 6,250 @ $137.37 | $859K | −3.7% of holding | 162,500 | Form 4 |
| 2026-08-03 | BLLN | Sale | 6,250 @ $137.37 | $859K | −3.6% of holding | 168,750 | Form 4 |
| 2026-08-03 | BLLN | Sale | 3,125 @ $137.25 | $429K | −78.8% of holding | 842 | Form 4 |
| 2026-08-03 | BLLN | Sale | 3,124 @ $137.25 | $429K | −30.6% of holding | 7,094 | Form 4 |
| 2026-08-03 | BLLN | Sale | 2,431 @ $138.09 | $336K | −16.0% of holding | 12,767 | Form 4 |
| 2026-08-03 | BLLN | Sale | 1,983 @ $136.42 | $271K | −33.3% of holding | 3,967 | Form 4 |
| 2026-08-03 | BLLN | Sale | 1,981 @ $136.42 | $270K | −16.2% of holding | 10,218 | Form 4 |
| 2026-08-03 | BLLN | Sale | 762 @ $138.09 | $105K | −10.7% of holding | 6,332 | Form 4 |
| 2026-08-03 | BLLN | Sale | 760 @ $138.09 | $105K | −90.3% of holding | 82 | Form 4 |
| 2026-08-03 | BLLN | Sale | 555 @ $133.81 | $74K | −1.7% of holding | 31,676 | Form 4 |
| 2026-08-03 | BLLN | Sale | 267 @ $139.21 | $37K | −2.1% of holding | 12,500 | Form 4 |
| 2026-08-03 | BLLN | Sale | 269 @ $133.01 | $36K | −0.8% of holding | 32,231 | Form 4 |
| 2026-08-03 | BLLN | Sale | 173 @ $133.81 | $23K | −1.4% of holding | 12,243 | Form 4 |
| 2026-08-03 | BLLN | Sale | 173 @ $133.81 | $23K | −2.8% of holding | 5,993 | Form 4 |
| 2026-08-03 | BLLN | Sale | 135 @ $135.42 | $18K | −0.4% of holding | 31,541 | Form 4 |
| 2026-08-03 | BLLN | Sale | 82 @ $139.21 | $11K | −1.3% of holding | 6,250 | Form 4 |
| 2026-08-03 | BLLN | Sale | 82 @ $139.20 | $11K | −100.0% of holding | 0 | Form 4 |
| 2026-08-03 | BLLN | Sale | 84 @ $133.01 | $11K | −1.3% of holding | 6,166 | Form 4 |
| 2026-08-03 | BLLN | Sale | 84 @ $133.00 | $11K | −0.7% of holding | 12,416 | Form 4 |
| 2026-08-03 | BLLN | Sale | 44 @ $135.41 | $6K | −0.4% of holding | 12,199 | Form 4 |
| 2026-08-03 | BLLN | Sale | 43 @ $135.41 | $6K | −0.7% of holding | 5,950 | Form 4 |
| 2026-07-09 | BLLN | Sale | 7,489 @ $125.43 | $939K | −59.9% of holding | 5,011 | Form 4 |
| 2026-07-09 | BLLN | Sale | 2,657 @ $127.44 | $339K | −88.3% of holding | 352 | Form 4 |
| 2026-07-09 | BLLN | Sale | 2,002 @ $126.48 | $253K | −40.0% of holding | 3,009 | Form 4 |
| 2026-07-09 | BLLN | Sale | 352 @ $128.23 | $45K | −100.0% of holding | 0 | Form 4 |
| 2026-07-06 | BLLN | Sale | 6,223 @ $123.07 | $766K | −33.9% of holding | 12,125 | Form 4 |
| 2026-07-06 | BLLN | Sale | 5,253 @ $123.81 | $650K | −43.3% of holding | 6,872 | Form 4 |
| 2026-07-06 | BLLN | Sale | 3,639 @ $119.36 | $434K | −14.6% of holding | 21,291 | Form 4 |
| 2026-07-06 | BLLN | Sale | 2,324 @ $123.25 | $286K | −1.3% of holding | 176,271 | Form 4 |
| 2026-07-06 | BLLN | Sale | 2,323 @ $123.25 | $286K | −1.3% of holding | 182,521 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,945 @ $123.07 | $239K | −51.4% of holding | 1,836 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,828 @ $120.66 | $221K | −8.6% of holding | 19,463 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,642 @ $123.81 | $203K | −89.4% of holding | 194 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,320 @ $118.49 | $156K | −5.0% of holding | 24,930 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,221 @ $124.04 | $151K | −0.7% of holding | 181,300 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,221 @ $124.04 | $151K | −0.7% of holding | 175,050 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,115 @ $121.84 | $136K | −5.7% of holding | 18,348 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,138 @ $119.36 | $136K | −19.5% of holding | 4,700 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,034 @ $118.81 | $123K | −0.6% of holding | 186,466 | Form 4 |
| 2026-07-06 | BLLN | Sale | 1,034 @ $118.81 | $123K | −0.6% of holding | 180,216 | Form 4 |
| 2026-07-06 | BLLN | Sale | 622 @ $124.61 | $78K | −9.1% of holding | 6,250 | Form 4 |
| 2026-07-06 | BLLN | Sale | 587 @ $122.08 | $72K | −0.3% of holding | 184,844 | Form 4 |
| 2026-07-06 | BLLN | Sale | 586 @ $122.08 | $72K | −0.3% of holding | 178,595 | Form 4 |
| 2026-07-06 | BLLN | Sale | 591 @ $119.67 | $71K | −0.3% of holding | 179,625 | Form 4 |
| 2026-07-06 | BLLN | Sale | 591 @ $119.67 | $71K | −0.3% of holding | 185,875 | Form 4 |
| 2026-07-06 | BLLN | Sale | 570 @ $120.66 | $69K | −12.1% of holding | 4,130 | Form 4 |
| 2026-07-06 | BLLN | Sale | 444 @ $120.69 | $54K | −0.2% of holding | 185,431 | Form 4 |
| 2026-07-06 | BLLN | Sale | 444 @ $120.69 | $54K | −0.2% of holding | 179,181 | Form 4 |
| 2026-07-06 | BLLN | Sale | 412 @ $118.49 | $49K | −6.6% of holding | 5,838 | Form 4 |
| 2026-07-06 | BLLN | Sale | 349 @ $121.84 | $43K | −8.5% of holding | 3,781 | Form 4 |
| 2026-07-06 | BLLN | Sale | 194 @ $124.61 | $24K | −100.0% of holding | 0 | Form 4 |
| 2026-07-06 | BLLN | Sale | 50 @ $124.74 | $6K | −0.0% of holding | 175,000 | Form 4 |
| 2026-07-06 | BLLN | Sale | 50 @ $124.74 | $6K | −0.0% of holding | 181,250 | Form 4 |
| 2026-06-08 | BLLN | Sale | 6,250 @ $100.00 | $625K | −3.2% of holding | 187,500 | Form 4 |
| 2026-06-08 | BLLN | Sale | 6,250 @ $100.00 | $625K | −100.0% of holding | 0 | Form 4 |
| 2026-06-08 | BLLN | Sale | 6,250 @ $96.45 | $603K | −3.1% of holding | 193,750 | Form 4 |
| 2026-06-08 | BLLN | Sale | 5,466 @ $94.76 | $518K | −20.9% of holding | 20,705 | Form 4 |
| 2026-06-08 | BLLN | Sale | 4,372 @ $96.89 | $424K | −23.2% of holding | 14,477 | Form 4 |
| 2026-06-08 | BLLN | Sale | 4,066 @ $98.12 | $399K | −28.1% of holding | 10,411 | Form 4 |
| 2026-06-08 | BLLN | Sale | 3,605 @ $99.06 | $357K | −34.6% of holding | 6,806 | Form 4 |
| 2026-06-08 | BLLN | Sale | 1,856 @ $95.59 | $177K | −9.0% of holding | 18,849 | Form 4 |
| 2026-06-08 | BLLN | Sale | 556 @ $99.97 | $56K | −8.2% of holding | 6,250 | Form 4 |
| 2026-06-08 | BLLN | Sale | 79 @ $100.87 | $8K | −0.3% of holding | 26,171 | Form 4 |
55 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-14 | BLLN | Option exercise | 16,666 | 16,666 | Form 4 |
| 2026-09-14 | BLLN | Option exercise | 16,666 | 510,295 | Form 4 |
| 2026-09-14 | BLLN | Option exercise | 8,333 | 24,999 | Form 4 |
| 2026-09-14 | BLLN | Option exercise | 8,333 | 501,962 | Form 4 |
| 2026-09-09 | BLLN | Gift | 20,000 | 0 | Form 4 |
| 2026-09-08 | BLLN | Conversion | 20,000 | 20,000 | Form 4 |
| 2026-09-08 | BLLN | Conversion | 20,000 | 2,197,542 | Form 4 |
| 2026-08-05 | BLLN | Option exercise | 15,539 | 526,961 | Form 4 |
| 2026-08-05 | BLLN | Option exercise | 15,539 | 15,539 | Form 4 |
| 2026-08-03 | BLLN | Option exercise | 20,000 | 20,000 | Form 4 |
| 2026-08-03 | BLLN | Option exercise | 20,000 | 555,000 | Form 4 |
| 2026-08-03 | BLLN | Option exercise | 6,250 | 548,750 | Form 4 |
| 2026-08-03 | BLLN | Option exercise | 6,250 | 542,500 | Form 4 |
| 2026-08-03 | BLLN | Option exercise | 6,250 | 26,250 | Form 4 |
| 2026-08-03 | BLLN | Option exercise | 6,250 | 32,500 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 12,500 | 12,500 | Form 4 |
| 2026-07-09 | BLLN | Option exercise | 12,500 | 575,000 | Form 4 |
| 2026-07-06 | BLLN | Option exercise | 20,000 | 20,000 | Form 4 |
| 2026-07-06 | BLLN | Option exercise | 20,000 | 593,750 | Form 4 |
| 2026-07-06 | BLLN | Option exercise | 6,250 | 587,500 | Form 4 |
| 2026-07-06 | BLLN | Option exercise | 6,250 | 26,250 | Form 4 |
| 2026-06-09 | BLLN | Gift | 10,000 | 0 | Form 4 |
| 2026-06-08 | BLLN | Option exercise | 20,000 | 620,000 | Form 4 |
| 2026-06-08 | BLLN | Option exercise | 20,000 | 20,000 | Form 4 |
| 2026-06-08 | BLLN | Option exercise | 6,250 | 613,750 | Form 4 |
| 2026-06-08 | BLLN | Option exercise | 6,250 | 26,250 | Form 4 |
| 2026-06-08 | BLLN | Conversion | 10,000 | 2,217,542 | Form 4 |
| 2026-06-08 | BLLN | Conversion | 10,000 | 10,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,227,542 | 2,227,542 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 1,003,102 | 1,003,102 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 1,003,102 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 640,000 | 640,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 640,000 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 200,000 | 200,000 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 1,965,108 | 2,227,542 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 1,965,108 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 262,434 | 0 | Form 4 |
| 2025-11-07 | BLLN | Conversion | 262,434 | 262,434 | Form 4 |
| 2025-11-07 | BLLN | Conversion | 262,434 | 0 | Form 4 |
| 2025-11-07 | BLLN | Other acquisition | 2,227,542 | 0 | 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.