OABI
OmniAb Inc
OmniAb Inc historical holders
total: 2
Arbiter Partners Capital Management OmniAb Inc transactions over time
- Total transactions:
- 2
- New positions:
- 1
- Added:
- 1
- Held since:
- 2025 Q3
- Held for:
- 3 quarters
- Latest activity:
- 2025 Q4
Paul Isaac has been an institutional investor in OmniAb Inc (OABI) since 2025 Q3. According to 2026 Q1 report, Paul Isaac holds 192,585 shares with a market value of roughly $302.36K representing 0.21% of their equity portfolio. The fund/company first acquired OABI in 2025 Q3, initially purchasing 160,529 shares. Since the initial investment, Arbiter Partners Capital Management has made 1 more transaction in this position.
Does Paul Isaac still hold OABI?
Yes, Paul Isaac continues to hold OmniAb Inc (OABI). According to their 2026 Q1 report, they maintain a position of 192,585 shares valued at approximately $302.36K, representing 0.21% of their equity portfolio.
When did Paul Isaac first invest in OABI?
Paul Isaac first invested in OmniAb Inc (OABI) in 2025 Q3 at the reported quarter-end price of $1.60 per share, acquiring 160,529 shares in their initial purchase.
What is Paul Isaac's average cost basis for OABI?
Based on historical transaction data, Paul Isaac's estimated cost basis for OmniAb Inc (OABI) is approximately $1.64 per share. This represents their average reported price* across all buy transactions.
Estimated cost basis*
- Weighted AVG buy price:
- $1.64
OABI transactions history by Arbiter Partners Capital Management
2 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2025 Q4
|
0.19%
|
192,585
|
$1.85
|
$356,282
|
+19.97% (+32,056)
|
+0.03%
|
|
2025 Q3
|
0.18%
|
160,529
|
$1.60
|
$256,846
|
new
|
+0.18%
|
* Shares, change to shares, sold shares, shares held after: split-adjusted.
* Reported price: this doesn't represent the actual buy or sell price. It is the split-adjusted price of the security as of the last day of the reported period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
* Estimated cost basis: based on "Reported price*" (not earlier than 2013 Q2). Calculation starts from the latest "new buy" activity to the latest "close out" activity (if any).
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* New buy or own: this means there is no earlier reporting (for us or in general). So we can't know if the actual purchase of the security happened at the reported period or earlier.