Pertento Partners LLP: NB BANCORP INC (NBBK): Quarterly 13F Position History
As of Q1 2026, Pertento Partners LLP reported 2,206,666 shares of NB BANCORP INC (NBBK), worth $46.5M and representing 4.9% of its 13F equity book. Quarter-over-quarter share count change: 137,110 (-5.8%) . The position first appeared in Q1 2024 and has been disclosed across 9 13F-HR filings in Pactolio's tracked window.
- 2,206,666Shares Held (Latest Filing)
- $46.5MReported Market Value (Latest Filing)
- 4.9%Portfolio Weight (% of 13F Equity Book)
- 137,110Quarter-over-Quarter Share Change
- +$40.8KQuarter-over-Quarter Value Change
- 2,355,743Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 9 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 2,206,666 | 137,110 | -5.8% | $46.5M | 4.9% | $21.1 |
| Q4 2025 | 2,343,776 | +229,440 | +10.9% | $46.5M | 5.1% | $19.8 |
| Q3 2025 | 2,114,336 | 0 | — | $37.3M | 4.5% | $17.6 |
| Q2 2025 | 2,114,336 | +135,433 | +6.8% | $37.8M | 4.3% | $17.9 |
| Q1 2025 | 1,978,903 | 0 | — | $35.8M | 4.3% | $18.1 |
| Q4 2024 | 1,978,903 | 376,840 | -16.0% | $35.7M | 3.7% | $18.1 |
| Q3 2024 | 2,355,743 | 0 | — | $43.7M | 5.3% | $18.6 |
| Q2 2024 | 2,355,743 | +1,019,184 | +76.3% | $35.5M | 4.5% | $15.1 |
| Q1 2024 | 1,336,559 | — | — | $18.3M | 3.7% | $13.7 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Pertento Partners LLP first disclose a NBBK position in 13F-HR filings?
Pertento Partners LLP first reported NB BANCORP INC (NBBK) on its 13F-HR filing for the period ending 2024-03-31 (Q1 2024). The position has appeared on 9 reported quarters within Pactolio's tracked window.
What was Pertento Partners LLP's most recent quarter-over-quarter share-count change in NBBK?
Between Q4 2025 and Q1 2026, Pertento Partners LLP reduced its NBBK position by 137,110 shares (-5.8%), leaving 2,206,666 shares at a market value of $46.5M.
Does the implied price-per-share represent Pertento Partners LLP's cost basis in NBBK?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.