Erik Karlsson to San Jose (2018)

Senators trade Erik Karlsson to the SharksSep 13, 2018

San Jose Sharks receive

• PErik KarlssonTwo-time Norris Trophy defenseman and Senators captain; re-signed with San Jose for 8 years x $11.5M AAV on 2019-06-17, which converted the conditional 2021 pick.Traded again by San Jose to Pittsburgh in the 2023-08-06 three-team deal.Traded again later in this tree
• PRFrancis PerronProspect forward included with Karlsson; no further trade in this tree.

Ottawa Senators receive

• PChris TierneyCenter; played out his Ottawa tenure and left as a free agent (no follow-up trade).
• PDylan DeMeloDefenseman.Flipped to Winnipeg at the 2020 deadline for a 2020 3rd (Leevi Merilainen).Traded again later in this tree
• RJosh NorrisUnsigned 2017 first-round pick (rights only at the time). Became a core Ottawa center.Traded to Buffalo on 2025-03-07 in the Dylan Cozens deal.Traded again later in this tree
• PRRudolfs BalcersProspect winger.Left Ottawa via a waiver claim by San Jose (waivers, not a trade).
• CConditional 1st-round pick, not lottery protected: 2019 if the Sharks missed the 2019 playoffs, otherwise 2020. San Jose made the 2019 playoffs, so it conveyed in 2020SJS 2020 1st, became No. 3 overall (won a 2020 lottery draw): Tim Stuetzle (C), selected by Ottawa.
• D2019 2nd-round pick, defined as the higher of San Jose's own or Florida's 2nd (both held by SJS). Conveyed as Florida's pick, No. 44 overall2019 2nd (No. 44 overall, originally FLA).Flipped by Ottawa to Carolina on 2019 draft day in a move up to No. 37 (Mads Sogaard).Traded again later in this tree
• CConditional 2021 2nd-round pick: conveyed if Karlsson re-signed with San Jose; would have upgraded to a 1st (not lottery protected) had SJS reached the 2019 Stanley Cup Final. Converted 2019-06-17 when Karlsson re-signedSJS 2021 2nd, No. 39 overall: Zack Ostapchuk (C), selected by Ottawa.Ostapchuk was later traded back to San Jose in the 2025 Zetterlund deal.Traded again later in this tree
• CConditional 1st-round pick no later than 2022, owed only if Karlsson appeared on an Eastern Conference roster/reserve list during 2018-19. Never conveyed; Karlsson stayed in San Jose

↳Erik Karlsson was moved in the next deal

Karlsson to Pittsburgh in a three-team trade with San Jose and MontrealAug 6, 2023

Pittsburgh Penguins receive

• PErik KarlssonReigning 2023 Norris Trophy winner. San Jose retained $1.5M of his $11.5M AAV (cap hit $10M in Pittsburgh, signed through 2026-27). Remains a Penguin as of 2026-07-02.
• PRem PitlickForward routed from Montreal to Pittsburgh.
• PRDillon HamaliukProspect forward.
• DSan Jose's 2026 3rd-round pickLater chain: PIT to DET (2026-03-06, Soderblom), DET to STL the same day (Justin Faulk deal), then STL to TOR on 2026-06-27 in the Brandon Carlo trade; became No. 73 overall 2026, Zach Olsen (RW), selected by Toronto.Flipped by Pittsburgh to Detroit for Elmer Soderblom on 2026-03-06.Traded again later in this tree

San Jose Sharks receive

• PMikael GranlundForward.Traded by San Jose to Dallas on 2025-02-01 with Cody Ceci for a 2025 1st and a conditional pick.Traded again later in this tree
• PJan RuttaDefenseman; no further trade traced in this tree.
• PMike HoffmanForward routed from Montreal to San Jose; no further trade traced in this tree.
• CPittsburgh's 2024 1st-round pick, top-10 protected (San Jose would receive it only if it fell outside the top ten). Converted when Pittsburgh did not win a 2024 lottery drawConveyed as No. 14 overall, 2024.Flipped by San Jose to Buffalo on 2024-06-27 (Buffalo selected Konsta Helenius at No. 14).Traded again later in this tree

Montreal Canadiens receive

• PJeff PetryDefenseman. Pittsburgh retained $1.56M (25%) of his salary in this deal.Traded by Montreal to Detroit on 2023-08-15.Traded again later in this tree
• PCasey DeSmithGoaltender.Traded by Montreal to Vancouver on 2023-09-19.Traded again later in this tree
• PRNathan LegareProspect forward.Traded by Montreal to New Jersey on 2024-03-11 for Arnaud Durandeau.Traded again later in this tree
• DPittsburgh's 2025 2nd-round pickBecame No. 41 overall, 2025.Swapped by Montreal to Carolina on 2025-06-28 (Carolina selected Semyon Frolov at No. 41).Traded again later in this tree

↳San Jose's 2026 3rd-round pick was moved in the next deal

Penguins trade the San Jose 2026 3rd (Karlsson-trade pick) to Detroit for Elmer SoderblomMar 6, 2026

Detroit Red Wings receive

• DSan Jose's 2026 3rd-round pick (acquired in the 2023 Karlsson three-team trade)Detroit included it in the Justin Faulk trade with St. Louis the same day; St. Louis then sent it to Toronto on 2026-06-27 in the Brandon Carlo trade, and Toronto selected Zach Olsen (RW) at No. 73 overall in 2026.Passed DET to STL to TOR; became Zach Olsen, No. 73 overall, 2026.

Pittsburgh Penguins receive

• PElmer SoderblomForward.

↳Mikael Granlund was moved in the next deal

Sharks trade Mikael Granlund and Cody Ceci to the StarsFeb 1, 2025

Dallas Stars receive

• PMikael GranlundForward acquired in the 2023 Karlsson trade (tree asset).
• PCody CeciDefenseman. Not a Karlsson-tree asset; included for completeness.

San Jose Sharks receive

• DDallas's 2025 1st-round pickNo. 30 overall, 2025: Joshua Ravensbergen (G), selected by San Jose.
• CConditional 2025 3rd-round pick that instead conveyed as Winnipeg's 2025 4th when Dallas failed to reach the 2025 Stanley Cup FinalNo. 124 overall, 2025 (originally WPG): Zack Sharp (D), selected by San Jose.

↳Pittsburgh's 2024 1st-round pick, top-10 protected (San Jose would receive it only if it fell outside the top ten). Converted when Pittsburgh did not win a 2024 lottery draw was moved in the next deal

Sharks trade No. 14 (Karlsson-trade pick) and No. 42 to Buffalo for No. 11Jun 27, 2024

Buffalo Sabres receive

• D2024 1st, No. 14 overall (originally PIT, acquired in the 2023 Karlsson trade)Buffalo selected Konsta Helenius (C) at No. 14.
• D2024 2nd, No. 42 overall (originally NJD). Not a Karlsson-tree asset; included for completenessBuffalo selected Adam Kleber (D) at No. 42.

San Jose Sharks receive

• D2024 1st, No. 11 overall (Buffalo's own)San Jose selected Sam Dickinson (D) at No. 11.

↳Jeff Petry was moved in the next deal

Canadiens trade Jeff Petry to the Red WingsAug 15, 2023

Detroit Red Wings receive

• PJeff PetryDefenseman acquired nine days earlier in the Karlsson three-team deal.

Montreal Canadiens receive

• PGustav LindstromDefenseman.
• CConditional 2025 4th-round pick: Montreal received the lower of Boston's or Detroit's 2025 4ths. Converted 2025-04-10, conveying as Detroit's 4thNo. 108 overall, 2025 (DET).Re-traded by Montreal to Boston on 2025-06-28; Boston flipped No. 108 to Tampa Bay for a 2026 4th, and Tampa Bay selected Benjamin Rautiainen (C) at No. 108.Traded again later in this tree

↳Conditional 2025 4th-round pick: Montreal received the lower of Boston's or Detroit's 2025 4ths. Converted 2025-04-10, conveying as Detroit's 4th was moved in the next deal

Canadiens send Nos. 79 and 108 (Karlsson-tree picks) to Boston for No. 69Jun 28, 2025

Boston Bruins receive

• D2025 3rd, No. 79 overall (originally VAN, acquired in the DeSmith trade; tree asset)Boston selected Cooper Simpson (LW) at No. 79.
• D2025 4th, No. 108 overall (originally DET, acquired in the Petry trade; tree asset)Boston flipped No. 108 to Tampa Bay for a 2026 4th; Tampa Bay selected Benjamin Rautiainen (C) at No. 108.

Montreal Canadiens receive

• D2025 3rd, No. 69 overall (Boston's own)Montreal selected Hayden Paupanekis (C) at No. 69.

↳Casey DeSmith was moved in the next deal

Canadiens trade Casey DeSmith to the CanucksSep 19, 2023

Vancouver Canucks receive

• PCasey DeSmithGoaltender acquired in the Karlsson three-team deal.

Montreal Canadiens receive

• PTanner PearsonForward.
• DVancouver's own 2025 3rd-round pickBecame No. 79 overall, 2025.Re-traded by Montreal to Boston on 2025-06-28 (with the Detroit 2025 4th from the Petry deal); Boston selected Cooper Simpson (LW) at No. 79.Traded again later in this tree

↳Nathan Legare was moved in the next deal

Canadiens trade Nathan Legare to the DevilsMar 11, 2024

New Jersey Devils receive

• PRNathan LegareProspect forward acquired in the Karlsson three-team deal (tree asset).

Montreal Canadiens receive

• PRArnaud DurandeauProspect winger; no further trade traced in this tree.

↳Pittsburgh's 2025 2nd-round pick was moved in the next deal

Canadiens swap No. 41 (Karlsson-trade pick) and No. 49 to Carolina for No. 34 and No. 189Jun 28, 2025

Carolina Hurricanes receive

• D2025 2nd, No. 41 overall (originally PIT, acquired in the 2023 Karlsson three-team trade)Carolina selected Semyon Frolov (G) at No. 41.
• D2025 2nd, No. 49 overall. Not a Karlsson-tree asset; included for completeness

Montreal Canadiens receive

• D2025 2nd, No. 34 overall (originally CHI)Montreal selected Alexander Zharovsky (RW) at No. 34.
• D2025 6th, No. 189 overallMontreal selected Andrew MacNiel (D) at No. 189.

↳Dylan DeMelo was moved in the next deal

Senators trade Dylan DeMelo to the JetsFeb 18, 2020

Winnipeg Jets receive

• PDylan DeMeloDefenseman acquired in the Karlsson trade; dealt at the 2020 deadline.

Ottawa Senators receive

• DWinnipeg's 2020 3rd-round pickNo. 71 overall, 2020: Leevi Merilainen (G), selected by Ottawa.

↳Josh Norris was moved in the next deal

Senators trade Josh Norris to Buffalo for Dylan CozensMar 7, 2025

Buffalo Sabres receive

• PJosh NorrisCenter originally acquired as an unsigned prospect in the 2018 Karlsson trade (tree asset).
• PJacob Bernard-DockerDefenseman. Not a Karlsson-tree asset; included for completeness.

Ottawa Senators receive

• PDylan CozensCenter on a seven-year, $7.1M AAV contract at the time of the trade.
• PDennis GilbertDepth defenseman.
• DBuffalo's own 2026 2nd-round pickEventually No. 60 overall, 2026: Alexander Bilecki (D), selected by Toronto after further moves.Flipped by Ottawa to Los Angeles on 2026-03-05 in the Warren Foegele trade, then by LA to Toronto on 2026-03-06 for Scott Laughton.Traded again later in this tree

↳Buffalo's own 2026 2nd-round pick was moved in the next deal

Senators flip the Buffalo 2026 2nd to Los Angeles for Warren FoegeleMar 5, 2026

Los Angeles Kings receive

• DBuffalo's 2026 2nd-round pick (acquired in the Norris/Cozens trade, tree asset)LA flipped it to Toronto on 2026-03-06 for Scott Laughton, conditional on LA qualifying for the 2026 playoffs (converted 2026-04-13). Became No. 60 overall, 2026: Alexander Bilecki (D), selected by Toronto.Moved LA to Toronto in the Scott Laughton trade; Toronto used it on Alexander Bilecki at No. 60.
• CConditional 2026 3rd-round pick: Los Angeles received the better of Ottawa's or Washington's 2026 3rds (Ottawa held Washington's via the 2024 Chychrun trade). Converted 2026-04-13 when Washington was eliminated from playoff contention after Ottawa had qualifiedConveyed as Washington's 3rd, No. 80 overall, 2026: Blake Zielinski (C), selected by Los Angeles.

Ottawa Senators receive

• PWarren FoegeleWinger.
• CConditional 2026 3rd-round pick: Ottawa received the lesser of Dallas's or Los Angeles's 2026 3rds (LA held Dallas's via the Rantanen chain). Converted 2026-04-26 when Los Angeles was eliminated in the first round of the 2026 playoffsConveyed as Dallas's 3rd, No. 91 overall, 2026: Louis-Felix Bourque (RW), selected by Ottawa.

↳2019 2nd-round pick, defined as the higher of San Jose's own or Florida's 2nd (both held by SJS). Conveyed as Florida's pick, No. 44 overall was moved in the next deal

Senators move No. 44 (Karlsson-trade pick) and No. 83 to Carolina for No. 37Jun 22, 2019

Carolina Hurricanes receive

• D2019 2nd, No. 44 overall (originally FLA, acquired via San Jose in the Karlsson trade)Carolina selected Jamieson Rees (C) at No. 44.
• D2019 3rd, No. 83 overall (originally PIT). Not a Karlsson-tree asset; included for completeness2019 3rd (No. 83 overall, originally PIT).

Ottawa Senators receive

• D2019 2nd, No. 37 overall (originally NYR, held by Carolina)Ottawa selected Mads Sogaard (G) at No. 37.

↳Conditional 2021 2nd-round pick: conveyed if Karlsson re-signed with San Jose; would have upgraded to a 1st (not lottery protected) had SJS reached the 2019 Stanley Cup Final. Converted 2019-06-17 when Karlsson re-signed was moved in the next deal

Senators send Zack Ostapchuk back to San Jose in the Fabian Zetterlund tradeMar 7, 2025

San Jose Sharks receive

• PZack OstapchukDrafted by Ottawa at No. 39 in 2021 with the second-round pick from the Karlsson trade (tree asset).
• PNoah GregorForward. Not a Karlsson-tree asset; included for completeness.
• DOttawa's own 2025 2nd-round pick. Not a Karlsson-tree asset; included for completenessNo. 53 overall, 2025: Cole McKinney (C), selected by San Jose.

Ottawa Senators receive

• PFabian ZetterlundForward.
• PRTristen RobinsProspect forward.
• DSan Jose's 2025 4th-round pickNo. 97 overall, 2025: Lucas Beckman (G), selected by Ottawa.

Scope rule: player assets and first-round picks that were re-traded get their own linked trade nodes; later-round pick hops beyond one flip are summarized in becameDescription (e.g. the SJS 2026 3rd passed PIT-DET-STL-TOR, with the final STL-TOR hop coming in the 2026-06-27 Brandon Carlo trade, and the BUF 2026 2nd passed OTT-LAK-TOR). Verified via live fetches on 2026-07-02: NHL.com trade articles, Wikipedia draft-page trade notes (raw wikitext downloaded for the 2019, 2020, 2021, 2024, 2025 and 2026 drafts), PuckPedia trade pages and ESPN. Retention: San Jose retained $1.5M of Karlsson's $11.5M AAV and Pittsburgh retained $1.56M (25%) of Petry's salary in the 2023 three-team deal, per ESPN; Montreal's additional retention on the 2023-08-15 Petry flip to Detroit was widely reported but not re-verified from a live source. Chris Tierney was never re-traded by Ottawa (departed as a free agent) and Rudolfs Balcers left Ottawa via a waiver claim by San Jose (waivers are not trades; claim date not re-verified this session). Francis Perron never became an NHL regular. The 2018 conditional 1st tied to Karlsson landing on an Eastern Conference roster in 2018-19 never conveyed. Karlsson remains a Penguin as of 2026-07-02; The Hockey News reported in the 2026 offseason that GM Kyle Dubas has no intention of trading him. Minor assets (Pitlick, Hamaliuk, Rutta, Hoffman, Gilbert, Robins, Pearson, Lindstrom, Durandeau) were not traced for further moves.