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

Direct: $52.0MIndirect: $16.3M$68.3Mas of 2026-09-16
  • Direct $52.0M
  • Indirect $16.3M
BLLNdirect501,962 sh$52.0M
BLLNindirect157,168 sh$16.3M

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

BLLN · 131 trades
2026-09-14: Sale, 7,214 sh ($732K)2026-09-14: Sale, 4,465 sh ($440K)2026-09-14: Sale, 3,143 sh ($319K)2026-09-14: Sale, 2,666 sh ($261K)2026-09-14: Sale, 2,666 sh ($261K)2026-09-14: Sale, 2,531 sh ($255K)2026-09-14: Sale, 2,456 sh ($245K)2026-09-14: Sale, 2,010 sh ($203K)2026-09-14: Sale, 1,680 sh ($166K)2026-09-14: Sale, 1,500 sh ($149K)2026-09-14: Option exercise, 16,666 sh ($47K)2026-09-14: Option exercise, 16,666 sh ($47K)2026-09-14: Option exercise, 8,333 sh ($23K)2026-09-14: Option exercise, 8,333 sh ($23K)2026-09-09: Gift, 20,000 sh ($0)2026-09-08: Conversion, 20,000 sh ($0)2026-09-08: Conversion, 20,000 sh ($0)2026-08-05: Sale, 15,539 sh ($2.3M)2026-08-05: Option exercise, 15,539 sh ($44K)2026-08-05: Option exercise, 15,539 sh ($44K)2026-08-03: Sale, 9,989 sh ($1.4M)2026-08-03: Sale, 6,354 sh ($867K)2026-08-03: Sale, 6,250 sh ($859K)2026-08-03: Sale, 6,250 sh ($859K)2026-08-03: Sale, 3,125 sh ($429K)2026-08-03: Sale, 3,124 sh ($429K)2026-08-03: Sale, 2,431 sh ($336K)2026-08-03: Sale, 1,983 sh ($271K)2026-08-03: Sale, 1,981 sh ($270K)2026-08-03: Sale, 762 sh ($105K)2026-08-03: Sale, 760 sh ($105K)2026-08-03: Sale, 555 sh ($74K)2026-08-03: Option exercise, 20,000 sh ($56K)2026-08-03: Option exercise, 20,000 sh ($56K)2026-08-03: Sale, 267 sh ($37K)2026-08-03: Sale, 269 sh ($36K)2026-08-03: Sale, 173 sh ($23K)2026-08-03: Sale, 173 sh ($23K)2026-08-03: Sale, 135 sh ($18K)2026-08-03: Option exercise, 6,250 sh ($18K)2026-08-03: Option exercise, 6,250 sh ($18K)2026-08-03: Option exercise, 6,250 sh ($18K)2026-08-03: Option exercise, 6,250 sh ($18K)2026-08-03: Sale, 82 sh ($11K)2026-08-03: Sale, 82 sh ($11K)2026-08-03: Sale, 84 sh ($11K)2026-08-03: Sale, 84 sh ($11K)2026-08-03: Sale, 44 sh ($6K)2026-08-03: Sale, 43 sh ($6K)2026-07-09: Sale, 7,489 sh ($939K)2026-07-09: Sale, 2,657 sh ($339K)2026-07-09: Sale, 2,002 sh ($253K)2026-07-09: Sale, 352 sh ($45K)2026-07-09: Option exercise, 12,500 sh ($35K)2026-07-09: Option exercise, 12,500 sh ($35K)2026-07-06: Sale, 6,223 sh ($766K)2026-07-06: Sale, 5,253 sh ($650K)2026-07-06: Sale, 3,639 sh ($434K)2026-07-06: Sale, 2,324 sh ($286K)2026-07-06: Sale, 2,323 sh ($286K)2026-07-06: Sale, 1,945 sh ($239K)2026-07-06: Sale, 1,828 sh ($221K)2026-07-06: Sale, 1,642 sh ($203K)2026-07-06: Sale, 1,320 sh ($156K)2026-07-06: Sale, 1,221 sh ($151K)2026-07-06: Sale, 1,221 sh ($151K)2026-07-06: Sale, 1,115 sh ($136K)2026-07-06: Sale, 1,138 sh ($136K)2026-07-06: Sale, 1,034 sh ($123K)2026-07-06: Sale, 1,034 sh ($123K)2026-07-06: Sale, 622 sh ($78K)2026-07-06: Sale, 587 sh ($72K)2026-07-06: Sale, 586 sh ($72K)2026-07-06: Sale, 591 sh ($71K)2026-07-06: Sale, 591 sh ($71K)2026-07-06: Sale, 570 sh ($69K)2026-07-06: Option exercise, 20,000 sh ($56K)2026-07-06: Option exercise, 20,000 sh ($56K)2026-07-06: Sale, 444 sh ($54K)2026-07-06: Sale, 444 sh ($54K)2026-07-06: Sale, 412 sh ($49K)2026-07-06: Sale, 349 sh ($43K)2026-07-06: Sale, 194 sh ($24K)2026-07-06: Option exercise, 6,250 sh ($18K)2026-07-06: Option exercise, 6,250 sh ($18K)2026-07-06: Sale, 50 sh ($6K)2026-07-06: Sale, 50 sh ($6K)2026-06-09: Gift, 10,000 sh ($0)2026-06-08: Sale, 6,250 sh ($625K)2026-06-08: Sale, 6,250 sh ($625K)2026-06-08: Sale, 6,250 sh ($603K)2026-06-08: Sale, 5,466 sh ($518K)2026-06-08: Sale, 4,372 sh ($424K)2026-06-08: Sale, 4,066 sh ($399K)2026-06-08: Sale, 3,605 sh ($357K)2026-06-08: Sale, 1,856 sh ($177K)2026-06-08: Option exercise, 20,000 sh ($56K)2026-06-08: Option exercise, 20,000 sh ($56K)2026-06-08: Sale, 556 sh ($56K)2026-06-08: Option exercise, 6,250 sh ($18K)2026-06-08: Option exercise, 6,250 sh ($18K)2026-06-08: Sale, 79 sh ($8K)2026-06-08: Conversion, 10,000 sh ($0)2026-06-08: Conversion, 10,000 sh ($0)2025-11-07: Other acquisition, 2,227,542 sh ($0)2025-11-07: Other acquisition, 1,003,102 sh2025-11-07: Other acquisition, 1,003,102 sh2025-11-07: Other acquisition, 640,000 sh2025-11-07: Other acquisition, 640,000 sh2025-11-07: Other acquisition, 200,000 sh2025-11-07: Other acquisition, 1,965,108 sh2025-11-07: Other acquisition, 1,965,108 sh2025-11-07: Other acquisition, 262,434 sh2025-11-07: Conversion, 262,434 sh2025-11-07: Conversion, 262,434 sh2025-11-07: Other acquisition, 2,227,542 sh2025-11-07: Other acquisition, 262,434 sh2025-11-07: Other acquisition, 200,000 sh2025-11-07: Other acquisition, 640,000 sh2025-11-07: Conversion, 262,434 sh2025-11-07: Other acquisition, 2,227,542 sh2025-11-07: Other acquisition, 200,000 sh2025-11-07: Other acquisition, 1,965,108 sh2025-11-07: Other acquisition, 262,434 sh2025-11-07: Other acquisition, 200,000 sh2025-11-07: Other acquisition, 1,965,108 sh2025-11-07: Other acquisition, 262,434 sh2025-11-07: Conversion, 262,434 sh2025-11-07: Other acquisition, 1,003,102 sh2025-11-07: Other acquisition, 1,003,102 sh2025-11-07: Other acquisition, 640,000 sh

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-14BLLNSale7,214 @ $101.44$732K−46.4% of holding8,333Form 4
2026-09-14BLLNSale4,465 @ $98.63$440K−17.9% of holding20,534Form 4
2026-09-14BLLNSale3,143 @ $101.49$319K−100.0% of holding0Form 4
2026-09-14BLLNSale2,666 @ $98.00$261K−1.7% of holding157,168Form 4
2026-09-14BLLNSale2,666 @ $98.00$261K−1.6% of holding159,834Form 4
2026-09-14BLLNSale2,531 @ $100.58$255K−14.0% of holding15,547Form 4
2026-09-14BLLNSale2,456 @ $99.57$245K−12.0% of holding18,078Form 4
2026-09-14BLLNSale2,010 @ $100.78$203K−39.0% of holding3,143Form 4
2026-09-14BLLNSale1,680 @ $98.64$166K−20.2% of holding6,653Form 4
2026-09-14BLLNSale1,500 @ $99.57$149K−22.5% of holding5,153Form 4
2026-08-05BLLNSale15,539 @ $150.03$2.3M−100.0% of holding0Form 4
2026-08-03BLLNSale9,989 @ $137.25$1.4M−39.7% of holding15,198Form 4
2026-08-03BLLNSale6,354 @ $136.42$867K−20.1% of holding25,187Form 4
2026-08-03BLLNSale6,250 @ $137.37$859K−3.7% of holding162,500Form 4
2026-08-03BLLNSale6,250 @ $137.37$859K−3.6% of holding168,750Form 4
2026-08-03BLLNSale3,125 @ $137.25$429K−78.8% of holding842Form 4
2026-08-03BLLNSale3,124 @ $137.25$429K−30.6% of holding7,094Form 4
2026-08-03BLLNSale2,431 @ $138.09$336K−16.0% of holding12,767Form 4
2026-08-03BLLNSale1,983 @ $136.42$271K−33.3% of holding3,967Form 4
2026-08-03BLLNSale1,981 @ $136.42$270K−16.2% of holding10,218Form 4
2026-08-03BLLNSale762 @ $138.09$105K−10.7% of holding6,332Form 4
2026-08-03BLLNSale760 @ $138.09$105K−90.3% of holding82Form 4
2026-08-03BLLNSale555 @ $133.81$74K−1.7% of holding31,676Form 4
2026-08-03BLLNSale267 @ $139.21$37K−2.1% of holding12,500Form 4
2026-08-03BLLNSale269 @ $133.01$36K−0.8% of holding32,231Form 4
2026-08-03BLLNSale173 @ $133.81$23K−1.4% of holding12,243Form 4
2026-08-03BLLNSale173 @ $133.81$23K−2.8% of holding5,993Form 4
2026-08-03BLLNSale135 @ $135.42$18K−0.4% of holding31,541Form 4
2026-08-03BLLNSale82 @ $139.21$11K−1.3% of holding6,250Form 4
2026-08-03BLLNSale82 @ $139.20$11K−100.0% of holding0Form 4
2026-08-03BLLNSale84 @ $133.01$11K−1.3% of holding6,166Form 4
2026-08-03BLLNSale84 @ $133.00$11K−0.7% of holding12,416Form 4
2026-08-03BLLNSale44 @ $135.41$6K−0.4% of holding12,199Form 4
2026-08-03BLLNSale43 @ $135.41$6K−0.7% of holding5,950Form 4
2026-07-09BLLNSale7,489 @ $125.43$939K−59.9% of holding5,011Form 4
2026-07-09BLLNSale2,657 @ $127.44$339K−88.3% of holding352Form 4
2026-07-09BLLNSale2,002 @ $126.48$253K−40.0% of holding3,009Form 4
2026-07-09BLLNSale352 @ $128.23$45K−100.0% of holding0Form 4
2026-07-06BLLNSale6,223 @ $123.07$766K−33.9% of holding12,125Form 4
2026-07-06BLLNSale5,253 @ $123.81$650K−43.3% of holding6,872Form 4
2026-07-06BLLNSale3,639 @ $119.36$434K−14.6% of holding21,291Form 4
2026-07-06BLLNSale2,324 @ $123.25$286K−1.3% of holding176,271Form 4
2026-07-06BLLNSale2,323 @ $123.25$286K−1.3% of holding182,521Form 4
2026-07-06BLLNSale1,945 @ $123.07$239K−51.4% of holding1,836Form 4
2026-07-06BLLNSale1,828 @ $120.66$221K−8.6% of holding19,463Form 4
2026-07-06BLLNSale1,642 @ $123.81$203K−89.4% of holding194Form 4
2026-07-06BLLNSale1,320 @ $118.49$156K−5.0% of holding24,930Form 4
2026-07-06BLLNSale1,221 @ $124.04$151K−0.7% of holding181,300Form 4
2026-07-06BLLNSale1,221 @ $124.04$151K−0.7% of holding175,050Form 4
2026-07-06BLLNSale1,115 @ $121.84$136K−5.7% of holding18,348Form 4
2026-07-06BLLNSale1,138 @ $119.36$136K−19.5% of holding4,700Form 4
2026-07-06BLLNSale1,034 @ $118.81$123K−0.6% of holding186,466Form 4
2026-07-06BLLNSale1,034 @ $118.81$123K−0.6% of holding180,216Form 4
2026-07-06BLLNSale622 @ $124.61$78K−9.1% of holding6,250Form 4
2026-07-06BLLNSale587 @ $122.08$72K−0.3% of holding184,844Form 4
2026-07-06BLLNSale586 @ $122.08$72K−0.3% of holding178,595Form 4
2026-07-06BLLNSale591 @ $119.67$71K−0.3% of holding179,625Form 4
2026-07-06BLLNSale591 @ $119.67$71K−0.3% of holding185,875Form 4
2026-07-06BLLNSale570 @ $120.66$69K−12.1% of holding4,130Form 4
2026-07-06BLLNSale444 @ $120.69$54K−0.2% of holding185,431Form 4
2026-07-06BLLNSale444 @ $120.69$54K−0.2% of holding179,181Form 4
2026-07-06BLLNSale412 @ $118.49$49K−6.6% of holding5,838Form 4
2026-07-06BLLNSale349 @ $121.84$43K−8.5% of holding3,781Form 4
2026-07-06BLLNSale194 @ $124.61$24K−100.0% of holding0Form 4
2026-07-06BLLNSale50 @ $124.74$6K−0.0% of holding175,000Form 4
2026-07-06BLLNSale50 @ $124.74$6K−0.0% of holding181,250Form 4
2026-06-08BLLNSale6,250 @ $100.00$625K−3.2% of holding187,500Form 4
2026-06-08BLLNSale6,250 @ $100.00$625K−100.0% of holding0Form 4
2026-06-08BLLNSale6,250 @ $96.45$603K−3.1% of holding193,750Form 4
2026-06-08BLLNSale5,466 @ $94.76$518K−20.9% of holding20,705Form 4
2026-06-08BLLNSale4,372 @ $96.89$424K−23.2% of holding14,477Form 4
2026-06-08BLLNSale4,066 @ $98.12$399K−28.1% of holding10,411Form 4
2026-06-08BLLNSale3,605 @ $99.06$357K−34.6% of holding6,806Form 4
2026-06-08BLLNSale1,856 @ $95.59$177K−9.0% of holding18,849Form 4
2026-06-08BLLNSale556 @ $99.97$56K−8.2% of holding6,250Form 4
2026-06-08BLLNSale79 @ $100.87$8K−0.3% of holding26,171Form 4
55 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-14BLLNOption exercise16,66616,666Form 4
2026-09-14BLLNOption exercise16,666510,295Form 4
2026-09-14BLLNOption exercise8,33324,999Form 4
2026-09-14BLLNOption exercise8,333501,962Form 4
2026-09-09BLLNGift20,0000Form 4
2026-09-08BLLNConversion20,00020,000Form 4
2026-09-08BLLNConversion20,0002,197,542Form 4
2026-08-05BLLNOption exercise15,539526,961Form 4
2026-08-05BLLNOption exercise15,53915,539Form 4
2026-08-03BLLNOption exercise20,00020,000Form 4
2026-08-03BLLNOption exercise20,000555,000Form 4
2026-08-03BLLNOption exercise6,250548,750Form 4
2026-08-03BLLNOption exercise6,250542,500Form 4
2026-08-03BLLNOption exercise6,25026,250Form 4
2026-08-03BLLNOption exercise6,25032,500Form 4
2026-07-09BLLNOption exercise12,50012,500Form 4
2026-07-09BLLNOption exercise12,500575,000Form 4
2026-07-06BLLNOption exercise20,00020,000Form 4
2026-07-06BLLNOption exercise20,000593,750Form 4
2026-07-06BLLNOption exercise6,250587,500Form 4
2026-07-06BLLNOption exercise6,25026,250Form 4
2026-06-09BLLNGift10,0000Form 4
2026-06-08BLLNOption exercise20,000620,000Form 4
2026-06-08BLLNOption exercise20,00020,000Form 4
2026-06-08BLLNOption exercise6,250613,750Form 4
2026-06-08BLLNOption exercise6,25026,250Form 4
2026-06-08BLLNConversion10,0002,217,542Form 4
2026-06-08BLLNConversion10,00010,000Form 4
2025-11-07BLLNOther acquisition2,227,5422,227,542Form 4
2025-11-07BLLNOther acquisition1,003,1021,003,102Form 4
2025-11-07BLLNOther acquisition1,003,1020Form 4
2025-11-07BLLNOther acquisition640,000640,000Form 4
2025-11-07BLLNOther acquisition640,0000Form 4
2025-11-07BLLNOther acquisition200,000200,000Form 4
2025-11-07BLLNOther acquisition1,965,1082,227,542Form 4
2025-11-07BLLNOther acquisition1,965,1080Form 4
2025-11-07BLLNOther acquisition262,4340Form 4
2025-11-07BLLNConversion262,434262,434Form 4
2025-11-07BLLNConversion262,4340Form 4
2025-11-07BLLNOther acquisition2,227,5420Form 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.