Waystar Holding Corp.
WAY- Exchange
- Nasdaq
- Industry
- Services-Computer Integrated Systems Design
- SEC CIK
- 0001990354
In the last 90 days, Waystar Holding Corp. insiders filed 0 open-market purchases and 3 sales; 301 institutions reported holding it in 13F filings for Q2 2026, worth $4.35B in total; no superinvestor holds it.
Holders of 5% or more of WAY
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Waystar Holding Corp., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Derby LuxCo S.a r.l. | 13G/A | 14.20%24.9M shares | −4.50 ppfrom 18.70% | May 9, 20253 filings | Nov 7, 2025 | SEC |
| FMR LLC | 13G/A | 10.20%19.6M shares | +2.90 ppfrom 7.30% | Feb 5, 20262 filings | Aug 7, 2026 | SEC |
| Canada Pension Plan Investment Board | 13G/A | 9.90%19.0M shares | −4.40 ppfrom 14.30% | Mar 6, 20253 filings | Nov 13, 2025 | SEC |
| BlackRock, Inc. | 13G | 9.10%15.9M shares | New | Oct 17, 20251 filing | Oct 17, 2025 | SEC |
| BCPE Derby Investor, LP | 13G/A | 5.90%11.3M shares | −3.00 ppfrom 8.90% | Feb 14, 20254 filings | Nov 14, 2025 | SEC |
| Advent International Corp | 13D | 5.80%11.1M shares | New | Oct 3, 20251 filing | Oct 3, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
17 Schedule 13D and 13G filings on Waystar Holding Corp., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 7, 202611:04 AM ET | FMR LLCand 1 other | 13G/A | 10.20%19.6M shares | +2.90 ppfrom 7.30% | Jul 31, 2026 | SEC |
| Mar 27, 20262:13 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −7.05 ppfrom 7.05%Below 5% | Mar 13, 2026 | SEC |
| Feb 5, 20261:40 PM ET | FMR LLCand 1 other | 13G | 7.30%13.9M shares | New | Dec 31, 2025 | SEC |
| Nov 14, 20254:54 PM ET | BCPE Derby Investor, LPand 1 other | 13G/A | 5.90%11.3M shares | −3.00 ppfrom 8.90% | Sep 30, 2025 | SEC |
| Nov 13, 20254:52 PM ET | Canada Pension Plan Investment Boardand 1 other | 13G/A | 9.90%19.0M shares | −4.40 ppfrom 14.30% | Sep 30, 2025 | SEC |
| Nov 7, 20254:30 PM ET | Derby LuxCo S.a r.l.and 1 other | 13G/A | 14.20%24.9M shares | −4.50 ppfrom 18.70% | Sep 30, 2025 | SEC |
| Oct 31, 202511:42 AM ET | Vanguard Group Inc | 13G/A | 7.05%12.3M shares | +1.81 ppfrom 5.24% | Sep 30, 2025 | SEC |
| Oct 17, 20256:41 PM ET | BlackRock, Inc. | 13G | 9.10%15.9M shares | New | Sep 30, 2025 | SEC |
| Oct 3, 20258:36 PM ET | Advent International Corpand 2 others | 13D | 5.80%11.1M shares | New | Oct 1, 2025 | SEC |
| Aug 14, 20255:11 PM ET | Canada Pension Plan Investment Boardand 1 other | 13G/A | 14.30%25.0M shares | −2.90 ppfrom 17.20% | Jun 30, 2025 | SEC |
| Aug 14, 20257:30 AM ET | BCPE Derby Investor, LPand 1 other | 13G/A | 8.90%15.4M shares | −1.90 ppfrom 10.80% | Jun 30, 2025 | SEC |
| Aug 8, 20254:30 PM ET | Derby LuxCo S.a r.l.and 1 other | 13G/A | 18.70%32.6M shares | −3.70 ppfrom 22.40% | Jun 30, 2025 | SEC |
| Jul 29, 20252:49 PM ET | Vanguard Group Inc | 13G | 5.24%9.07M shares | New | Jun 30, 2025 | SEC |
| May 15, 20257:00 AM ET | BCPE Derby Investor, LPand 1 other | 13G/A | 10.80%18.6M shares | −3.10 ppfrom 13.90% | Mar 31, 2025 | SEC |
| May 9, 20254:30 PM ET | Derby LuxCo S.a r.l.and 1 other | 13G/A | 22.40%38.8M shares | – | Mar 31, 2025 | SEC |
| Mar 6, 20255:41 PM ET | Canada Pension Plan Investment Boardand 1 other | 13G/A | 17.20%29.7M shares | – | Feb 24, 2025 | SEC |
| Feb 14, 20257:59 AM ET | BCPE Derby Investor, LPand 1 other | 13G/A | 13.90%23.9M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Waystar Holding Corp. shares.
No Form 144 notices for Waystar Holding Corp. are on file.