What were the biggest filings this week?
Ranked by company size, importance and dollar value
- 1AMDAcquisition
AMD is buying World Labs in an $8.2B all-stock deal. The number of shares it issues will be set by AMD's 10-day Nasdaq volume-weighted average price before closing, and the shares are being issued privately under Section 4(a)(2) and Rule 506.
8-K Item 3.02 · Sep 280000002488-26-000182 - 2Paramount SkydancePSKYMerger
A court lifted the order that blocked closing of the WBD merger. In exchange, a five-year decree requires 30 theatrical releases a year, rising to 32, with $30M due for each missed film. Closing was expected on October 6, when WBD holders would receive $31.0167 a share.
8-K Item 8.01 · Sep 300001104659-26-1123478-K Item 5.02, 7.01 · Oct 10001104659-26-112829 - 3GameStopGMECEO buy
CEO Ryan Cohen bought 1,150,000 shares on the open market from September 29 to October 2 at an average $24.04, about $27.6M (transaction code P). Director Nat Turner added $255K the same week.
Form 4 filings, trades Sep 29 to Oct 2 - 4
The two companies signed an amended merger agreement on October 1. The deal still needs Synaptics stockholder approval and regulatory clearances, and onsemi said the timing of closing remains uncertain.
8-K Item 1.01, 8.01 · Oct 10001140361-26-0382948-K Item 1.01, 7.01 · Oct 10001140361-26-038301 - 5CortevaCTVASpin-off
Corteva completed the separation of its seed business into Vylor on October 1. Shareholders of record on September 24 received Vylor shares pro rata, and Vylor was set to begin regular-way NYSE trading as VYLR on October 1.
8-K Item 8.01 · Oct 10001193125-26-409895
What did insiders buy and sell?
Officer and director sales fell to $1.04B, about half the prior week and the lowest since the week of July 20. Buys rose to $283M, the most since the week of August 17, though 15% of that is one single-day purchase at a single price, which we leave out of the table below.
Open-market buys, by week
Officers and directors, Form 4s filed each week
Show data
| Week of | Value |
|---|---|
| Jul 13, 2026 | $30.9M |
| Jul 20, 2026 | $44.0M |
| Jul 27, 2026 | $65.5M |
| Aug 3, 2026 | $53.8M |
| Aug 10, 2026 | $191M |
| Aug 17, 2026 | $430M |
| Aug 24, 2026 | $112M |
| Aug 31, 2026 | $129M |
| Sep 7, 2026 | $130M |
| Sep 14, 2026 | $97.9M |
| Sep 21, 2026 | $225M |
| Sep 28, 2026 | $283M |
Open-market sales, by week
Same weeks, different scale from buys
Show data
| Week of | Value |
|---|---|
| Jul 13, 2026 | $1.93B |
| Jul 20, 2026 | $570M |
| Jul 27, 2026 | $1.15B |
| Aug 3, 2026 | $2.98B |
| Aug 10, 2026 | $4.15B |
| Aug 17, 2026 | $3.90B |
| Aug 24, 2026 | $2.63B |
| Aug 31, 2026 | $2.01B |
| Sep 7, 2026 | $1.64B |
| Sep 14, 2026 | $2.19B |
| Sep 21, 2026 | $2.02B |
| Sep 28, 2026 | $1.04B |
| Company | Who | Trade dates | Value | Avg price |
|---|---|---|---|---|
| GameStopGME | CEO and a director CEO is 99% of the total | 9/29 to 10/2 | $27.9M | $24.04 |
| NayaxNYAX | CEO and another insider CEO Yair Nechmad $4.2M | 9/22 to 9/30 | $4.3M | $46.23 |
| Xenon PharmaceuticalsXENE | CEO and CFO 45,000 shares the same day | 9/30 | $1.7M | $37.36 |
| H.B. FullerFUL | 7 directors Six bought about $100K each | 9/28 to 9/30 | $621K | $49.38 |
| Presurance HoldingsPRHI | 5 insiders incl. CEO and CFO | 9/30 | $249K | $6.71 |
| Company | Who | Trade dates | Value | Avg price |
|---|---|---|---|---|
| KE HoldingsBEKE | Peng Yongdong, CEO Class A ordinary shares, held indirectly | 9/25 | $84.6M | $5.27 |
| Monolithic Power SystemsMPWR | Michael Hsing, CEO | 9/28 | $40.3M | $1,344.97 |
| CoreWeaveCRWV | Michael Intrator, CEO | 9/29 to 9/30 | $33.5M | $86.86 |
| MedpaceMEDP | August Troendle, CEO | 9/25 to 9/30 | $31.9M | $622.88 |
| SeagateSTX | William Mosley, CEO | 10/1 | $27.7M | $922.35 |
| LumentumLITE | Wajid Ali, CFO | 10/1 | $25.7M | $1,048.50 |
Large executive sales are often made under prearranged 10b5-1 plans, so they say less than buys; each Form 4 footnote says whether a plan was used. Left out of the buy table: one-day purchases at a single price that can be offering allocations (ADARx, ADRX, $43.4M at $17.00), eleven Simon Property directors buying at one price on one day, interval and private funds, prices under $1 and SPACs.
What did the 8-Ks say?
One 8-K can carry several items, so the item counts add up to more than 1,077. Item 1.01 (material agreement) appeared on 248 8-Ks, the most in nine weeks, in step with the rise in deal filings.
- 7.01Reg FD disclosure320
- 8.01Other events319
- 1.01Material agreement248
- 5.02Officer or director change226
- 2.03New debt71
- 3.02Unregistered stock sale64
- 5.03Bylaw amendment54
- 5.07Shareholder vote50
- 2.02Earnings release47
- 2.01Deal completed34
- 3.01Listing deficiency28
Deals and closings
- TransDigmTDGCompleted the Prince & Izant acquisition for about $1.07B, paid from cash on hand8-K Item 8.01 · Sep 280001260221-26-000064
- CenterPoint EnergyCNPCompleted the sale of its Ohio utility VEDO to National Fuel for $2.62B8-K Item 2.01, 7.01 · Oct 10001104659-26-112565
- Valley NationalVLYAgreed to acquire Bluevine for $340M8-K Item 3.02, 7.01 · Sep 280001193125-26-403391
- Peoples BancorpPEBO+Capital BancorpCBNKSigned a merger agreement dated September 298-K Item 1.01, 7.01 · Sep 300000318300-26-000205
- Keurig Dr PepperKDPChobani redeemed KDP's stake for $800M: $400M in cash and a $400M note due December 268-K Item 8.01 · Sep 280001418135-26-000060
- Kimberly-ClarkKMBOffered to exchange Kenvue notes for up to $7.0B of new Kimberly-Clark notes plus cash, conditioned on the first merger closing8-K Item 8.01 · Sep 280001104659-26-111354
Red flags
- McCormickMKCDismissed EY as auditor, effective after its fiscal 2026 10-K, over an expected independence conflict tied to the Unilever foods deal; no disagreements reported8-K Item 4.01 · Sep 280000063754-26-000322
- NikeNKEAbout $1.0B of additional pre-tax restructuring charges, about $0.3B of it in fiscal 20278-K Item 2.02, 2.05 · Oct 10000320187-26-000184
- Getty ImagesGETYListing-standard notice; postponed its annual meeting planned for October 88-K Item 3.01, 8.01 · Oct 10001213900-26-105790
- Leslie'sLESLFiled Item 1.03 (bankruptcy or receivership) along with a Nasdaq delisting notice for a bid price under $18-K Item 1.01, 1.03, 2.04, 2.05, 3.01, 7.01 · Sep 300001193125-26-408874
Leadership changes
- General MillsGISDana McNabb becomes CEO on January 1, 2027; Jeffrey Harmening stays as Executive Chair8-K Item 5.02 · Sep 300001628280-26-063892
- Northern TrustNTRSCFO David Fox plans to retire around March 31, 2027; the successor search has started8-K Item 5.02, 7.01 · Sep 290000073124-26-000057
- Kimberly-ClarkKMBPresident and COO Russell Torres leaves on November 2; no successor named8-K Item 5.02 · Oct 10001104659-26-112571
Trials and financing
- Kodiak SciencesKODZenkuda met the Phase 3 DAYBREAK primary endpoint in wet AMD, non-inferior to aflibercept (p=0.0007); a BLA is planned for Q4 20268-K Item 8.01 · Sep 280001193125-26-403481
- TransDigmTDGIssued $3.0B of 6.75% senior secured notes due 2035 to repurchase $2.1B of notes due 20288-K Item 1.01, 2.03 · Sep 290001193125-26-406037
Activists and funds
13D stakes
One 13D from a tracked filer: CWRE SSF Securities Holding reported 8.7% of BrightSpire Capital and asked the board and independent directors to waive the ownership limit so it can add to the stake (filed September 29).
13F holdings
Third-quarter 13Fs are due Monday, November 16, because November 14 falls on a Saturday. None were filed this week; last quarter 79 arrived in the deadline week alone (August 10 to 14).
Frequently asked questions
What is the SignalX Weekly?
A weekly summary of what U.S. companies filed with the SEC: 8-K events, Form 4 insider trades, 13D stakes and 13F deadlines. SignalX collects the filings from EDGAR, counts them, and links every highlighted item to its source filing.
How are the insider totals counted?
Open-market purchases (code P) and sales (code S) of non-derivative shares by officers and directors, from Form 4s filed Monday to Friday. Duplicate joint filings are removed and prices above $20,000 a share are dropped as data errors.
What counts as a deal-related 8-K?
An 8-K that SignalX's event classifier labels as a merger or acquisition, a completed deal, or a divestiture. One deal can produce several 8-Ks, for example from both the buyer and the target.
Is this investment advice?
No. It reports what companies and insiders disclosed in public filings. Check the original filing before acting on anything here.
Data and method
Source: SEC EDGAR filings collected and classified by SignalX. 8-Ks filed Sep 28 to Oct 4; insider figures cover officer and director open-market purchases (P) and sales (S) of non-derivative shares on Form 4s filed Sep 28 to Oct 2, with joint-filing duplicates and prices above $20,000 a share removed. Importance scores (0 to 4) and event types come from SignalX's classification model. Data as of Oct 8, 2026.
SignalX Weekly summarizes public SEC filings for research. It is not investment advice. Figures are as of the data date above and can change if a filing is amended.
Follow these filings as they land
The insider screener and company pages update as new filings arrive on EDGAR.