Rallybio (RLYB) insider funds add 50,800 shares in open-market buys
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
Rallybio Corp reported that private investment funds and separately managed accounts managed by ADAR1 Capital Management, LLC, which may be deemed to be indirectly beneficially owned by ADAR1 and Daniel Schneeberger, completed a series of open-market purchases of common stock. On May 11–12, 2026, these accounts bought a total of 50,800 shares of Rallybio common stock in four transactions at weighted average prices around $13.83–$14.00 per share, within disclosed trading ranges from $13.75 to $14.00. Following the most recent transaction, the filing reports 830,584 shares indirectly owned. The reporting persons disclaim beneficial ownership of the securities beyond any pecuniary interest.
Positive
- None.
Negative
- None.
Insider Trade Summary
Net Buyer: 50,800 shares ($711,055)
Net Buy
4 txns
Insider
ADAR1 Capital Management, LLC, Schneeberger Daniel
Role
null | null
Bought
50,800 shs ($711K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Purchase | Common Stock | 800 | $13.8288 | $11K |
| Purchase | Common Stock | 5,100 | $13.9984 | $71K |
| Purchase | Common Stock | 25,000 | $14.00 | $350K |
| Purchase | Common Stock | 19,900 | $14.00 | $279K |
Holdings After Transaction:
Common Stock — 830,584 shares (Indirect, See Footnote)
Footnotes (1)
- The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.9164 to $14.0000, inclusive. Each Reporting Person undertakes to provide to Rallybio Corp, any security holder of Rallybio Corp or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.7500 to $13.9300, inclusive. Each Reporting Person undertakes to provide to Rallybio Corp, any security holder of Rallybio Corp or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The reported securities are owned directly by private investment funds managed by ADAR1 Capital Management, LLC and separately managed accounts of ADAR1 Capital Management, LLC, and may be deemed to be indirectly beneficially owned by (i) ADAR1 Capital Management, LLC and (ii) Daniel Schneeberger, the sole manager of ADAR1 Capital Management, LLC. For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.
Key Figures
Total shares purchased: 50,800 shares
Shares after latest transaction: 830,584 shares
Purchase price per share: $14.0000 per share
+4 more
7 metrics
Total shares purchased
50,800 shares
Open-market purchases on May 11–12, 2026
Shares after latest transaction
830,584 shares
Indirect holdings reported following May 12, 2026 purchase
Purchase price per share
$14.0000 per share
Two May 11, 2026 transactions in common stock
Purchase price per share
$13.8288 per share
May 12, 2026 open-market common stock purchase
Trading price range
$13.9164–$14.0000
Weighted-average price range in one transaction footnote
Trading price range
$13.7500–$13.9300
Weighted-average price range in another transaction footnote
Number of buy transactions
4 transactions
All coded P as open-market purchases of common stock
Key Terms
open-market purchase, weighted average price, indirectly beneficially owned, pecuniary interest, +1 more
5 terms
open-market purchase financial
"transaction_action: open-market purchase"
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
weighted average price financial
"The reported price is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
indirectly beneficially owned financial
"may be deemed to be indirectly beneficially owned by (i) ADAR1..."
pecuniary interest financial
"except to the extent of his/its pecuniary interest therein, if any"
Section 16 of the Securities Exchange Act of 1934 regulatory
"For purposes of Section 16 of the Securities Exchange Act of 1934, as amended"
A provision of federal securities law that requires company insiders—directors, officers and large shareholders—to publicly report their stock holdings and trades and to surrender any “short-swing” profits from purchases and sales within a six-month window. It acts like a rule that forces leaders to announce their trades and prevents quick buy-sell windfalls, giving investors transparency into insider activity and reducing opportunities for unfair gain.
FAQ
What insider transactions did Rallybio Corp (RLYB) report in this Form 4?
The Form 4 reports four open-market purchases of Rallybio common stock totaling 50,800 shares. These transactions were executed on May 11–12, 2026 by accounts managed by ADAR1 Capital Management, LLC at prices around the mid‑teens per share.
Are the Rallybio (RLYB) insider trades described as open-market purchases?
Yes. Each transaction is classified as an open-market purchase of Rallybio common stock. The Form 4 specifies transaction code P with a description of purchases in the open market or private transactions, and provides weighted average prices and trading ranges.
How do the Rallybio (RLYB) Form 4 filers describe their beneficial ownership?
The reporting persons state the securities are owned directly by funds and managed accounts of ADAR1 and may be deemed indirectly owned by them. They disclaim beneficial ownership of the shares except to the extent of any pecuniary interest in those securities.