SharkWater Trading  •  Data Center Desk • Insider Filing Nebius Director Arne Grimme Bought 148 Shares at Exactly $169.99 for the Third Straight Session, and the Price Never Moved October 20, 2026 Bottom Line Up Front A Form 4 filed today (October 20, 2026) shows Nebius (Nasdaq: NBIS) director Arne Grimme bought 148 shares at $169.99 on October 19, his third consecutive daily purchase at that exact price. He now holds 6,329 direct shares, up from 5,885 before the October 15 buy (desk math: 3 x 148 = 444). Every purchase is tagged to a Rule 10b5-1 plan adopted June 15, 2026. The notional is about $25,000 per day at 148 shares (desk calc). The same price three days running is the data point. The filing does not say why, and I have no live quote to compare it to. What the Filing Shows Item Per Form 4 filed Oct 20, 2026 Reporting person Arne Grimme, Director Transaction date October 19, 2026, code P (open market purchase) Shares and price 148 at $169.99, acquired, direct Direct shares after 6,329 10b5-1 Box checked. Footnote: plan adopted June 15, 2026 Signed October 20, 2026, attorney-in-fact (Anna Akimova) Source: SEC EDGAR Form 4, accession 0001513845-26-000134, filed 2026-10-20. Notional and share-count arithmetic are desk calculations, not a market quote. Three Days, One Price Grimme’s earlier Form 4 (accession 0001513845-26-000130, filed 2026-10-16) reported two buys of 148 shares at $169.99, on October 15 and October 16. Today’s filing adds October 19. That is 444 shares at one printed price across three sessions. Our October 19 post showed a different director, John Boynton IV, selling across a $164.80 to $188.77 band on October 15. A stock that traded a $23.97 range on October 15 and then filled the same buyer at $169.99 again on October 16 and October 19 is not behaving like a market order. The filing does not state a limit price, and I am not going to invent one. The pattern is consistent with a plan that triggers at or below a set price, but that is my inference, not a filed fact. If it is right, it also tells you the stock traded at or below $169.99 on each of those sessions. That is what to check on a chart. A plan buyer with a fixed limit is a crab pot dropped at one depth. It only fills when the tide brings the price down to it, so each fill tells you where the water was. Company News the Same Day Nebius’s own newsroom lists a blog post dated October 19, 2026: $10 million in compute, capital and community programs for European AI builders. It is a program announcement, not a financial update, and I found no 8-K or 6-K tied to it. The last press release on the page is the Inferize acquisition dated October 1, 2026. Nothing there explains the October 15 price range. Source: nebius.com/newsroom, read 2026-10-20. The Bull Case The buyer kept buying. $25,000 a day is small, but the plan was adopted in June and keeps executing through a drawdown. Fills mark a level. Directors do not control the plan once it is adopted, so these fills are a mechanical floor marker, not sentiment. Both holdings remain. Grimme is up to 6,329 direct shares. Boynton still holds 403,522 after his sale. The Bear Case Size is trivial. 444 shares is roughly $75,000 total (desk calc at $169.99). It is a rounding error against the Boynton sale. Plan, not conviction. A plan set in June that keeps buying at one price says nothing about what the board knows today. Cause unexplained. No 8-K, 6-K or press release explains the October 15 swing. The cause is still missing. The SharkWater Take This is a footnote, not a thesis. Three identical-price fills tell me where the stock has been trading, not where it is going, and a $75,000 plan purchase does not offset the insider paper that has stacked up on this name. I am not trading it. Pull the October 15, 16 and 19 sessions on your own chart and see whether $169.99 was the low or just a level the stock kept revisiting. If it held, that is a support marker worth watching. If it broke, the plan buyer is the one with the stale limit. I have no live quote, so I take no side today. Tight lines, SharkWater Educational and informational purposes only. Not personalized investment advice. All figures sourced as noted and accurate as of publication. The author may hold positions in securities discussed. Do your own work.