| 6 jun 2026 | Karlsson, Mikael Johann 2157 | Bjornsson, Sigurbjorn 2279 | 0-1 | A20 Apertura Inglesa: King's English Variation | Skákþing Íslands - Áskorendaflokkur 2026 | 50 | Ver |
| 8 mar 2026 | Bjornsson, Sigurbjorn 2277 | Gunnarsson, Jon Viktor 2434 | ½-½ | B61 Defensa Siciliana: Richter-Rauzer Variation, Modern Variation | Icelandic team chess championship premier league | 31 | Ver |
| 7 mar 2026 | Arngrimsson, Dagur 2358 | Bjornsson, Sigurbjorn 2277 | 1-0 | B22 Defensa Siciliana: Alapin Variation, Smith-Morra Declined | Icelandic team chess championship premier league | 84 | Ver |
| 6 mar 2026 | Bjornsson, Sigurbjorn 2277 | Johannsson, Orn Leo 2297 | ½-½ | C11 Defensa Francesa: Classical Variation, Steinitz Variation | Icelandic team chess championship premier league | 47 | Ver |
| 5 mar 2026 | Einarsson, Halldor Gretar 2174 | Bjornsson, Sigurbjorn 2277 | 0-1 | E83 Defensa India de Rey: Sämisch Variation, Yates Defense | Icelandic team chess championship premier league | 26 | Ver |
| 24 ene 2026 | Bjornsson, Sigurbjorn 2269 | Jonsson, Gauti Pall 2241 | 1-0 | E65 Defensa India de Rey: Fianchetto Variation, Yugoslav Variation, Exchange Line | Le Kock Mótaröðin - Úrslitakvöld | 35 | Ver |
| 24 ene 2026 | Bjornsson, Sigurbjorn 2269 | Stefansson, Vignir Vatnar 2579 | 0-1 | B60 Defensa Siciliana: Richter-Rauzer Variation, Dragon Variation | Le Kock Mótaröðin - Úrslitakvöld | 73 | Ver |
| 24 ene 2026 | Heimisson, Hilmir Freyr 2413 | Bjornsson, Sigurbjorn 2269 | 1-0 | E62 Defensa India de Rey: Fianchetto Variation, Carlsbad Variation | Le Kock Mótaröðin - Úrslitakvöld | 45 | Ver |
| 24 ene 2026 | Bjornsson, Sigurbjorn 2269 | Ragnarsson, Dagur 2345 | ½-½ | C30 Gambito de Rey rehusado: Petrov's Defense | Le Kock Mótaröðin - Úrslitakvöld | 23 | Ver |
| 24 ene 2026 | Skarphedinsson, Ingvar Wu 2179 | Bjornsson, Sigurbjorn 2269 | 0-1 | E73 Defensa India de Rey: Averbakh Variation, Modern Defense | Le Kock Mótaröðin - Úrslitakvöld | 33 | Ver |
| 7 dic 2025 | Stefansson, Vignir Vatnar 2599 | Bjornsson, Sigurbjorn 2245 | 1-0 | E60 Defensa India de Rey: Fianchetto Variation, Immediate Fianchetto | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | 61 | Ver |
| 7 dic 2025 | Bjornsson, Sigurbjorn 2245 | Stefansson, Hannes 2431 | 0-1 | B61 Defensa Siciliana: Richter-Rauzer Variation, Modern Variation | Friðriksmót Landsbankans – Íslandsmótið í hraðskák | 53 | Ver |
| 16 nov 2025 | Omarsson, Josef 2025 | Bjornsson, Sigurbjorn 2270 | 0-1 | E76 Defensa India de Rey: Four Pawns Attack | Icelandic team chess championship premier league | 39 | Ver |
| 15 nov 2025 | Bjornsson, Sigurbjorn 2270 | Sigurjonsson, Stefan Th. 2113 | 1-0 | C18 Defensa Francesa: Winawer Variation, Classical Variation | Icelandic team chess championship premier league | 28 | Ver |
| 15 nov 2025 | Bjornsson, Sigurbjorn 2270 | Arngrimsson, Dagur 2370 | ½-½ | C92 Apertura Española (Ruy López): Closed | Icelandic team chess championship premier league | 84 | Ver |
| 14 nov 2025 | Johannsson, Orn Leo 2314 | Bjornsson, Sigurbjorn 2270 | ½-½ | A45 Defensa India: Accelerated London System | Icelandic team chess championship premier league | 16 | Ver |
| 24 oct 2025 | Krallis, Christos 2403 | Bjornsson, Sigurbjorn 2282 | 1-0 | B76 Defensa Siciliana: Dragon Variation, Yugoslav Attack, Modern Line | European Chess Club Cup 2025 | Open Matches 17+ | 30 | Ver |
| 21 oct 2025 | Atlas, Valery 2407 | Bjornsson, Sigurbjorn 2282 | ½-½ | B70 Defensa Siciliana: Dragon Variation, Fianchetto Variation | European Chess Club Cup 2025 | Open Matches 1-16 | 24 | Ver |
| 20 oct 2025 | Bjornsson, Sigurbjorn 2282 | Bochnicka, Vladimir 2347 | 0-1 | B32 Defensa Siciliana: Kalashnikov Variation | European Chess Club Cup 2025 | Open Matches 17+ | 73 | Ver |