8-K - REPLIGEN CORP (0000730272) (Filer)
Published . Updated .
Key takeaways
- 8-K - REPLIGEN filed an 8-K with the SEC on Oct 30 (a notice of a material company event).
- Exposed: RGEN
- Market reaction: RGEN −8.3% by the next session
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8-K - REPLIGEN filed an 8-K with the SEC on Oct 30 (a notice of a material company event).
Directly affected
- RGEN Repligen-1.6% 5d
Named in this report.
Indirectly affected
- XLV Health Care Select Sector SPDR
Health Care Select Sector SPDR holds the health sector that Repligen belongs to, so it often moves with news about it.
- AMGN Amgen+13.5% 30d
Amgen is a peer of Repligen in biological products, (no diagnostic substances); rivals often move on the same news.
- GILD Gilead Sciences+16.4% 30d
Gilead Sciences is a peer of Repligen in biological products, (no diagnostic substances); rivals often move on the same news.
- MRNA Moderna+21.1% 30d
Moderna is a peer of Repligen in biological products, (no diagnostic substances); rivals often move on the same news.
- ARGX argenx SE-16.4% 16d
argenx SE is a peer of Repligen in biological products, (no diagnostic substances); rivals often move on the same news.
- RVMD Revolution Medicines
Revolution Medicines is a peer of Repligen in biological products, (no diagnostic substances); rivals often move on the same news.
Price reaction, T-5 to T+3
| Ticker | T-5 | T-3 | T-1 | T0 | T+1 | T+2 | T+3 |
|---|---|---|---|---|---|---|---|
| RGEN | -6.29% | -6.78% | base | -6.21% | -8.29% | after close | after close |
| XLV | -2.61% | -2.65% | base | +0.46% | +0.32% | after close | after close |
| AMGN | -4.65% | -2.74% | base | +1.19% | +1.05% | after close | after close |
| GILD | -5.75% | -3.93% | base | +3.24% | +2.90% | after close | after close |
| MRNA | -10.15% | -6.68% | base | -0.51% | -0.83% | after close | after close |
| ARGX | -2.46% | -1.72% | base | -0.56% | -2.58% | after close | after close |
| RVMD | -1.78% | -2.19% | base | +0.49% | -1.19% | after close | after close |
Closing-price change versus T-1, the last close before the story. T0 to T+3 fill in after each market close. Prices: Alpaca IEX.
Filed: 2026-10-30 AccNo: 0001628280-26-068382 Size: 355 KB Item 3.02: Unregistered Sales of Equity Securities Item 8.01: Other Events Item 9.01: Financial Statements and Exhibits
Source: sec-edgar
How far Repligen (RGEN) has moved since 30 Oct 2026
| Company | When | Move | Status |
|---|---|---|---|
| AMGN | that day | +1.19% | final price |
| AMGN | the next day | +1.05% | final price |
| AMGN | three days earlier | -2.74% | final price |
| AMGN | five days earlier | -4.65% | final price |
| ARGX | that day | -0.56% | final price |
| ARGX | the next day | -2.58% | final price |
| ARGX | three days earlier | -1.72% | final price |
| ARGX | five days earlier | -2.46% | final price |
| GILD | that day | +3.24% | final price |
| GILD | the next day | +2.90% | final price |
| GILD | three days earlier | -3.93% | final price |
| GILD | five days earlier | -5.75% | final price |
| MRNA | that day | -0.51% | final price |
| MRNA | the next day | -0.83% | final price |
| MRNA | three days earlier | -6.68% | final price |
| MRNA | five days earlier | -10.15% | final price |
| Repligen (RGEN) | that day | -6.21% | final price |
| Repligen (RGEN) | the next day | -8.29% | final price |
| Repligen (RGEN) | three days earlier | -6.78% | final price |
| Repligen (RGEN) | five days earlier | -6.29% | final price |
| RVMD | that day | +0.49% | final price |
| RVMD | the next day | -1.19% | final price |
| RVMD | three days earlier | -2.19% | final price |
| RVMD | five days earlier | -1.78% | final price |
| XLV | that day | +0.46% | final price |
| XLV | the next day | +0.32% | final price |
| XLV | three days earlier | -2.65% | final price |
| XLV | five days earlier | -2.61% | final price |
Trades by members of Congress and officials in the stocks in this story
- Rep. David J. Taylor bought Amgen (AMGN), worth $1,001 - $15,000 on 22 Sep 2026. That is 38 days before publication. Filed 1 Oct 2026. View the filing.
- Rep. David J. Taylor sold Amgen (AMGN), worth $1,001 - $15,000 on 26 Aug 2026. That is 65 days before publication. Filed 5 Sep 2026. View the filing.
- Sen. Sheldon Whitehouse sold Amgen (AMGN) (held by a spouse), worth $1,001 - $15,000 on 12 Aug 2026. That is 79 days before publication. Filed 2 Sep 2026. View the filing.
- Rep. Rohit Khanna sold Gilead Sciences (GILD) (held by a dependent child), worth $1,001 - $15,000 on 10 Aug 2026. That is 81 days before publication. Filed 4 Sep 2026. View the filing.
- Rep. Maria Elvira Salazar sold Moderna (MRNA), worth $1,001 - $15,000 on 24 Sep 2026. That is 36 days before publication. Filed 7 Oct 2026. View the filing.
- Rep. Rohit Khanna bought Moderna (MRNA) (held by a spouse), worth $1,001 - $15,000 on 4 Sep 2026. That is 56 days before publication. Filed 7 Oct 2026. View the filing.
- Donald J Trump, an executive branch official, bought Moderna (MRNA), worth $1,001 - $15,000 on 28 Aug 2026. That is 63 days before publication. Filed 8 Oct 2026. View the filing.
Public disclosure filings, not a recommendation. The filing link is the source document. News use of these reports still sits under 5 U.S.C. § 13107(c).
Who gains and who loses around Repligen (RGEN)
Companies mentioned with this story
- RGEN Repligen
In “8-K - REPLIGEN CORP (0000730272) (Filer),” Repligen (RGEN) is linked, with no stored direction, high confidence. Reason on file: SEC 8-K filing -> direct issuer disclosure -> RGEN
How “8-K - REPLIGEN CORP (0000730272) (Filer)” reaches Repligen (RGEN)
“8-K - REPLIGEN CORP (0000730272) (Filer)” (30 Oct 2026) reaches Repligen (RGEN) through this story.
For Repligen (RGEN), the reason on file says SEC 8-K filing -> direct issuer disclosure -> RGEN
Price levels for Repligen (RGEN)
RGEN traded between 166.78 and 191.02 across 5 sessions. The latest close on file is 173.01.
How strong the case is around Repligen (RGEN)
14 out of 100
“8-K - REPLIGEN CORP (0000730272) (Filer)” scores 14 out of 100. The score uses 1 sources, and 1 linked companies.