# EDGAR Filing Document

**Accession Number:** 0000276914
**File Stem:** 0001752724-23-073912
**Filing Date:** 2023-3
**Character Count:** 38719
**Document Hash:** 740e0fd72b31d3aceeeb1ca8de4f6eaa
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-23-073912.hdr.sgml**: 20230330

**ACCESSION NUMBER**: 0001752724-23-073912

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230131

**FILED AS OF DATE**: 20230330

**DATE AS OF CHANGE**: 20230330

**PERIOD START**: 20230731

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LORD ABBETT DEVELOPING GROWTH FUND, INC.
- **CENTRAL INDEX KEY:** 0000276914
- **IRS NUMBER:** 132958970
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 0731

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-02871
- **FILM NUMBER:** 23778681

**BUSINESS ADDRESS:**
- **STREET 1:** 90 HUDSON ST.
- **CITY:** JERSEY CITY
- **STATE:** NJ
- **ZIP:** 07302
- **BUSINESS PHONE:** 201-827-2000

**MAIL ADDRESS:**
- **STREET 1:** 90 HUDSON ST.
- **CITY:** JERSEY CITY
- **STATE:** NJ
- **ZIP:** 07302

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LORD ABBETT DEVELOPING GROWTH FUND INC /NEW/
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DEVELOPING GROWTH SHARES INC
- **DATE OF NAME CHANGE:** 19600201

## Series and Classes Contracts Data

### LORD ABBETT DEVELOPING GROWTH FUND INC (Series ID: S000006834)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000018473 | Class A      | LAGWX           |
| C000018475 | Class C      | LADCX           |
| C000018476 | Class P      | LADPX           |
| C000018477 | Class I      | LADYX           |
| C000054855 | Class F      | LADFX           |
| C000054856 | Class R2     | LADQX           |
| C000054857 | Class R3     | LADRX           |
| C000151972 | Class R4     | LADSX           |
| C000151973 | Class R5     | LADTX           |
| C000151974 | Class R6     | LADVX           |
| C000188220 | Class F3     | LOGWX           |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** LORD ABBETT DEVELOPING GROWTH FUND, INC.

- **b. Investment Company Act file number:** 811-02871

- **c. CIK number of Registrant:** 0000276914

- **d. LEI of Registrant:** 549300HWJ2W28SDTJF85

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 90 HUDSON STREET

  - **City:** JERSEY CITY

  - **State:** NJ

  - **Foreign country:** US

  - **Zip / Postal Code:** 07302

  - **Telephone number:** 201-827-2000

**Item A.2. Information about the Series.**

- **a. Name of Series:** LORD ABBETT DEVELOPING GROWTH FUND INC

- **b. EDGAR series identifier (if any):** S000006834

- **c. LEI of Series:** 549300HWJ2W28SDTJF85

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2023-07-31

- **b. Date as of which information is reported:** 2023-01-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $2775866029.55

**Total Liabilities:** $54370373.39

**Net Assets:** $2721495656.16

**Cash Not Reported:** $0.04

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000188220 | 0.33%                | -6.23%               | 8.37%                |
| Class ID C000018475 | 0.24%                | -6.34%               | 8.33%                |
| Class ID C000151974 | 0.33%                | -6.23%               | 8.37%                |
| Class ID C000151972 | 0.28%                | -6.25%               | 8.38%                |
| Class ID C000054856 | 0.31%                | -6.32%               | 8.34%                |
| Class ID C000151973 | 0.34%                | -6.22%               | 8.39%                |
| Class ID C000018473 | 0.28%                | -6.25%               | 8.38%                |
| Class ID C000018476 | 0.30%                | -6.26%               | 8.34%                |
| Class ID C000018477 | 0.34%                | -6.22%               | 8.39%                |
| Class ID C000054857 | 0.30%                | -6.31%               | 8.32%                |
| Class ID C000054855 | 0.31%                | -6.23%               | 8.33%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-49872339.95            | $59643295.89                               |
| Month 2  | $-38921430.65            | $-126598508.45                             |
| Month 3  | $18253789.75             | $193137250.27                              |

### Schedule of Portfolio Investments

| Name                                  | Title                                                  | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Parsons Corp                          | Parsons Corp                                           | CUSIP: 70202L102<br>LEI: 549300ZXH0VRBSEPX752 | Long             | EC               | CORP              | US        |    542449 | NS      | $23607380.48  | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Fixed Income Clearing Corp            | FIXED INC CLEARING CORP.REPO                           | CUSIP: 000000000<br>LEI: 549300H47WTHXPU08X20 | Long             | RA               | CORP              | US        |  22153598 | PA      | $22153598.19  | 0.81%             |  |  |  | No            |                  2 | On Loan: No      |
| 10X Genomics Inc                      | 10X Genomics Inc                                       | CUSIP: 88025U109<br>LEI: 5493003Z6741WNLG7H43 | Long             | EC               | CORP              | US        |    462602 | NS      | $21663651.66  | 0.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Inter Parfums Inc                     | Inter Parfums Inc                                      | CUSIP: 458334109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    151276 | NS      | $17883848.72  | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Piper Sandler Cos                     | Piper Sandler Cos                                      | CUSIP: 724078100<br>LEI: QUQDBTUSOAKFEVMRMF78 | Long             | EC               | CORP              | US        |    122989 | NS      | $17476736.90  | 0.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Pliant Therapeutics Inc               | Pliant Therapeutics Inc                                | CUSIP: 729139105<br>LEI: 5493002Q5LITR7VHZH02 | Long             | EC               | CORP              | US        |    575061 | NS      | $20150137.44  | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| DoubleVerify Holdings Inc             | DoubleVerify Holdings Inc                              | CUSIP: 25862V105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1040128 | NS      | $28281080.32  | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Cabot Corp                            | Cabot Corp                                             | CUSIP: 127055101<br>LEI: K05C0SER542GQ6VLRO68 | Long             | EC               | CORP              | US        |    312235 | NS      | $23520662.55  | 0.86%             |  |  |  | No            |                  1 | On Loan: No      |
| RBC Bearings Inc                      | RBC Bearings Inc                                       | CUSIP: 75524B104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    148920 | NS      | $36332012.40  | 1.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Fiverr International Ltd              | Fiverr International Ltd                               | CUSIP: 000000000<br>LEI: 549300Z8OREY6THCPF67 | Long             | EC               | CORP              | IL        |    589513 | NS      | $21865037.17  | 0.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Prometheus Biosciences Inc            | Prometheus Biosciences Inc                             | CUSIP: 74349U108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    241848 | NS      | $27488443.68  | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Talos Energy Inc                      | Talos Energy Inc                                       | CUSIP: 87484T108<br>LEI: 549300OKFHZ84SFJFT95 | Long             | EC               | CORP              | US        |   1043313 | NS      | $20668030.53  | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Warby Parker Inc                      | Warby Parker Inc                                       | CUSIP: 93403J106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    796280 | NS      | $12859922.00  | 0.47%             |  |  |  | No            |                  1 | On Loan: —       |
| SiteOne Landscape Supply Inc          | SiteOne Landscape Supply Inc                           | CUSIP: 82982L103<br>LEI: 5299008LX7SBD4HIAU03 | Long             | EC               | CORP              | US        |    153158 | NS      | $23204968.58  | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| CEVA Inc                              | CEVA Inc                                               | CUSIP: 157210105<br>LEI: 529900G9T7CVU2J2VU73 | Long             | EC               | CORP              | US        |    227439 | NS      | $7532779.68   | 0.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Planet Fitness Inc                    | Planet Fitness Inc                                     | CUSIP: 72703H101<br>LEI: 549300LLE5HUPF6H8G33 | Long             | EC               | CORP              | US        |    643367 | NS      | $54461016.55  | 2.00%             |  |  |  | No            |                  1 | On Loan: No      |
| JFrog Ltd                             | JFrog Ltd                                              | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | IL        |    886655 | NS      | $22795900.05  | 0.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Pacific Biosciences of California Inc | Pacific Biosciences of California Inc                  | CUSIP: 69404D108<br>LEI: 529900F1BWRE1M0KZN89 | Long             | EC               | CORP              | US        |   2823134 | NS      | $31308556.06  | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| HashiCorp Inc                         | HashiCorp Inc                                          | CUSIP: 418100103<br>LEI: 549300XGOB9ZFQHMIP56 | Long             | EC               | CORP              | US        |    462630 | NS      | $14887433.40  | 0.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Axonics Inc                           | Axonics Inc                                            | CUSIP: 05465P101<br>LEI: 549300LJY4X7N57VJL05 | Long             | EC               | CORP              | US        |    532328 | NS      | $32684939.20  | 1.20%             |  |  |  | No            |                  1 | On Loan: No      |
| iRhythm Technologies Inc              | iRhythm Technologies Inc                               | CUSIP: 450056106<br>LEI: 549300FJI72RJGDQS384 | Long             | EC               | CORP              | US        |    104792 | NS      | $10301053.60  | 0.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Applied Industrial Technologies Inc   | Applied Industrial Technologies Inc                    | CUSIP: 03820C105<br>LEI: 549300NU173IJRC6PO38 | Long             | EC               | CORP              | US        |    248163 | NS      | $35539423.23  | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Balchem Corp                          | Balchem Corp                                           | CUSIP: 057665200<br>LEI: 549300VR70OPMHUI3557 | Long             | EC               | CORP              | US        |    182345 | NS      | $23819727.35  | 0.88%             |  |  |  | No            |                  1 | On Loan: No      |
| Tetra Tech Inc                        | Tetra Tech Inc                                         | CUSIP: 88162G103<br>LEI: 549300UJ1LP7JGJC5P32 | Long             | EC               | CORP              | US        |    268825 | NS      | $41807664.00  | 1.54%             |  |  |  | No            |                  1 | On Loan: No      |
| AvidXchange Holdings Inc              | AvidXchange Holdings Inc                               | CUSIP: 05368X102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   3441248 | NS      | $38266677.76  | 1.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Remitly Global Inc                    | Remitly Global Inc                                     | CUSIP: 75960P104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   2457988 | NS      | $29643335.28  | 1.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Fox Factory Holding Corp              | Fox Factory Holding Corp                               | CUSIP: 35138V102<br>LEI: 529900GE1HSV0617R721 | Long             | EC               | CORP              | US        |    272829 | NS      | $32218376.61  | 1.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Evoqua Water Technologies Corp        | Evoqua Water Technologies Corp                         | CUSIP: 30057T105<br>LEI: 529900YQAOMEZRGRRP43 | Long             | EC               | CORP              | US        |     53756 | NS      | $2607703.56   | 0.10%             |  |  |  | No            |                  1 | On Loan: No      |
| Gogo Inc                              | Gogo Inc                                               | CUSIP: 38046C109<br>LEI: 549300VL3DIHSFHYTO04 | Long             | EC               | CORP              | US        |   1328258 | NS      | $22274886.66  | 0.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Apellis Pharmaceuticals Inc           | Apellis Pharmaceuticals Inc                            | CUSIP: 03753U106<br>LEI: 254900HS0ZFRXXSB9D42 | Long             | EC               | CORP              | US        |    737654 | NS      | $38896495.42  | 1.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Madrigal Pharmaceuticals Inc          | Madrigal Pharmaceuticals Inc                           | CUSIP: 558868105<br>LEI: 549300CHIMT2EUSNJB60 | Long             | EC               | CORP              | US        |     88867 | NS      | $25615912.75  | 0.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Inspire Medical Systems Inc           | Inspire Medical Systems Inc                            | CUSIP: 457730109<br>LEI: 549300XQQCQ7HCJKTW25 | Long             | EC               | CORP              | US        |    207290 | NS      | $52456807.40  | 1.93%             |  |  |  | No            |                  1 | On Loan: No      |
| MasTec Inc                            | MasTec Inc                                             | CUSIP: 576323109<br>LEI: 549300TMDIT8WREDOF45 | Long             | EC               | CORP              | US        |    141425 | NS      | $13892177.75  | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| BJ's Wholesale Club Holdings Inc      | BJ's Wholesale Club Holdings Inc                       | CUSIP: 05550J101<br>LEI: 549300UCIWH1C93V0J03 | Long             | EC               | CORP              | US        |     18155 | NS      | $1315692.85   | 0.05%             |  |  |  | No            |                  1 | On Loan: No      |
| ChampionX Corp                        | ChampionX Corp                                         | CUSIP: 15872M104<br>LEI: 549300EP2909K6DYYP38 | Long             | EC               | CORP              | US        |    448787 | NS      | $14818946.74  | 0.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Penumbra Inc                          | Penumbra Inc                                           | CUSIP: 70975L107<br>LEI: 549300RGE06P3ECANU72 | Long             | EC               | CORP              | US        |     84084 | NS      | $21055474.44  | 0.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Comfort Systems USA Inc               | Comfort Systems USA Inc                                | CUSIP: 199908104<br>LEI: 5299009DT1ZA5HTU6R38 | Long             | EC               | CORP              | US        |    396819 | NS      | $48030971.76  | 1.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Axon Enterprise Inc                   | Axon Enterprise Inc                                    | CUSIP: 05464C101<br>LEI: 549300QP2IEEGFE16681 | Long             | EC               | CORP              | US        |    258485 | NS      | $50518308.40  | 1.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Array Technologies Inc                | Array Technologies Inc                                 | CUSIP: 04271T100<br>LEI: 549300JM5FECYJQ85V37 | Long             | EC               | CORP              | US        |   1411948 | NS      | $31387604.04  | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Cactus Inc                            | Cactus Inc                                             | CUSIP: 127203107<br>LEI: 549300J3T8C9F8QFKV08 | Long             | EC               | CORP              | US        |    159071 | NS      | $8607331.81   | 0.32%             |  |  |  | No            |                  1 | On Loan: No      |
| Wingstop Inc                          | Wingstop Inc                                           | CUSIP: 974155103<br>LEI: 549300SSH3F8HPIM3Q47 | Long             | EC               | CORP              | US        |    242272 | NS      | $38392843.84  | 1.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Saia Inc                              | Saia Inc                                               | CUSIP: 78709Y105<br>LEI: 549300WNPG4N9GBOYB29 | Long             | EC               | CORP              | US        |     69136 | NS      | $18858918.08  | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| World Wrestling Entertainment Inc     | World Wrestling Entertainment Inc                      | CUSIP: 98156Q108<br>LEI: 549300WZVLSCS3L4L698 | Long             | EC               | CORP              | US        |    436887 | NS      | $36969377.94  | 1.36%             |  |  |  | No            |                  1 | On Loan: No      |
| CyberArk Software Ltd                 | CyberArk Software Ltd                                  | CUSIP: 000000000<br>LEI: 529900YEXNDM894PWS93 | Long             | EC               | CORP              | IL        |    111150 | NS      | $15658812.00  | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Dick's Sporting Goods Inc             | Dick's Sporting Goods Inc                              | CUSIP: 253393102<br>LEI: 529900SSBV5I4LWSK313 | Long             | EC               | CORP              | US        |    261029 | NS      | $34132152.04  | 1.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Calix Inc                             | Calix Inc                                              | CUSIP: 13100M509<br>LEI: 5299002RQRZ4SXSCSJ58 | Long             | EC               | CORP              | US        |    829441 | NS      | $43661774.24  | 1.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Cerevel Therapeutics Holdings Inc     | Cerevel Therapeutics Holdings Inc                      | CUSIP: 15678U128<br>LEI: 254900RJNIRS9COSQR41 | Long             | EC               | CORP              | US        |    897163 | NS      | $30638116.45  | 1.13%             |  |  |  | No            |                  1 | On Loan: No      |
| TransMedics Group Inc                 | TransMedics Group Inc                                  | CUSIP: 89377M109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    748998 | NS      | $47201853.96  | 1.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Fidelity Investments                  | Fidelity Investments Money Market Government Portfolio | CUSIP: 31607A703<br>LEI: E57ODZWZ7FF32TWEFA76 | Long             | STIV             | RF                | US        |  29193982 | NS      | $29193982.16  | 1.07%             |  |  |  | No            |                  1 | On Loan: No      |
| Intra-Cellular Therapies Inc          | Intra-Cellular Therapies Inc                           | CUSIP: 46116X101<br>LEI: 5299002U2KGF193IJA20 | Long             | EC               | CORP              | US        |    356761 | NS      | $17095987.12  | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| Shift4 Payments Inc                   | Shift4 Payments Inc                                    | CUSIP: 82452J109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    295230 | NS      | $18906529.20  | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Rambus Inc                            | Rambus Inc                                             | CUSIP: 750917106<br>LEI: 2549000211GDCQSLV833 | Long             | EC               | CORP              | US        |   1288165 | NS      | $52132037.55  | 1.92%             |  |  |  | No            |                  1 | On Loan: No      |
| Krystal Biotech Inc                   | Krystal Biotech Inc                                    | CUSIP: 501147102<br>LEI: 549300YONUY68210OE41 | Long             | EC               | CORP              | US        |    742365 | NS      | $61705378.80  | 2.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Texas Roadhouse Inc                   | Texas Roadhouse Inc                                    | CUSIP: 882681109<br>LEI: 5299002Y1CNRPDGXTQ75 | Long             | EC               | CORP              | US        |    265518 | NS      | $26665972.74  | 0.98%             |  |  |  | No            |                  1 | On Loan: No      |
| Diodes Inc                            | Diodes Inc                                             | CUSIP: 254543101<br>LEI: 549300XP2X1ARVH3BX23 | Long             | EC               | CORP              | US        |    549340 | NS      | $48995634.60  | 1.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Topgolf Callaway Brands Corp          | Topgolf Callaway Brands Corp                           | CUSIP: 131193104<br>LEI: 5493005UB0KFRKBPCU72 | Long             | EC               | CORP              | US        |   1153301 | NS      | $28244341.49  | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Olink Holding AB                      | Olink Holding AB                                       | CUSIP: 680710100<br>LEI: 8945004Z7ZHV3LML4J27 | Long             | EC               | CORP              | SE        |    544583 | NS      | $10662935.14  | 0.39%             |  |  |  | No            |                  1 | On Loan: —       |
| AeroVironment Inc                     | AeroVironment Inc                                      | CUSIP: 008073108<br>LEI: 529900PGHVI29YLZ6221 | Long             | EC               | CORP              | US        |    263008 | NS      | $23399821.76  | 0.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Karuna Therapeutics Inc               | Karuna Therapeutics Inc                                | CUSIP: 48576A100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    189379 | NS      | $37760278.81  | 1.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Crocs Inc                             | Crocs Inc                                              | CUSIP: 227046109<br>LEI: 549300B0J6YCXD63OG72 | Long             | EC               | CORP              | US        |    559263 | NS      | $68101455.51  | 2.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Citibank NA                           | CITIBANK NA DDCA                                       | CUSIP: 000000000<br>LEI: E57ODZWZ7FF32TWEFA76 | Long             | STIV             | RF                | US        |   3243776 | NS      | $3243775.79   | 0.12%             |  |  |  | No            |                  1 | On Loan: No      |
| TechnipFMC PLC                        | TechnipFMC PLC                                         | CUSIP: 000000000<br>LEI: 549300D5I93QWCJTCK36 | Long             | EC               | CORP              | GB        |   2094410 | NS      | $29091354.90  | 1.07%             |  |  |  | No            |                  1 | On Loan: No      |
| Wynn Resorts Ltd                      | Wynn Resorts Ltd                                       | CUSIP: 983134107<br>LEI: 254900CEKKWIHTEAB172 | Long             | EC               | CORP              | US        |    205214 | NS      | $21268378.96  | 0.78%             |  |  |  | No            |                  1 | On Loan: No      |
| Xenon Pharmaceuticals Inc             | Xenon Pharmaceuticals Inc                              | CUSIP: 98420N105<br>LEI: 549300XV44Q9Z1MIPQ03 | Long             | EC               | CORP              | CA        |   1319585 | NS      | $51582577.65  | 1.90%             |  |  |  | No            |                  1 | On Loan: No      |
| Agilysys Inc                          | Agilysys Inc                                           | CUSIP: 00847J105<br>LEI: 5299001XWB5V3B5IPN93 | Long             | EC               | CORP              | US        |    238209 | NS      | $19904744.04  | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Flywire Corp                          | Flywire Corp                                           | CUSIP: 302492103<br>LEI: 54930055DSV7NNY4VY66 | Long             | EC               | CORP              | US        |   1399328 | NS      | $37739876.16  | 1.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Arcellx Inc                           | Arcellx Inc                                            | CUSIP: 03940C100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    383472 | NS      | $12811799.52  | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Qualtrics International Inc           | Qualtrics International Inc                            | CUSIP: 747601201<br>LEI: 549300NW34K5PVZGTN68 | Long             | EC               | CORP              | US        |    538707 | NS      | $8495409.39   | 0.31%             |  |  |  | No            |                  1 | On Loan: No      |
| PowerSchool Holdings Inc              | PowerSchool Holdings Inc                               | CUSIP: 73939C106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1261743 | NS      | $28414452.36  | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Shockwave Medical Inc                 | Shockwave Medical Inc                                  | CUSIP: 82489T104<br>LEI: 549300LDXO56IC5Y1538 | Long             | EC               | CORP              | US        |     66015 | NS      | $12406198.95  | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Sarepta Therapeutics Inc              | Sarepta Therapeutics Inc                               | CUSIP: 803607100<br>LEI: 549300IKDPIED8J8IG21 | Long             | EC               | CORP              | US        |    325769 | NS      | $40711351.93  | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Endava PLC                            | Endava PLC                                             | CUSIP: 29260V105<br>LEI: 213800JJ6CRPCWCQVZ25 | Long             | EC               | CORP              | GB        |    328689 | NS      | $28881902.43  | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Gitlab Inc                            | Gitlab Inc                                             | CUSIP: 37637K108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    354515 | NS      | $17516586.15  | 0.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Legend Biotech Corp                   | Legend Biotech Corp                                    | CUSIP: 52490G102<br>LEI: 254900EIUFZTW136H859 | Long             | EC               | CORP              | KY        |    316221 | NS      | $15969160.50  | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Ventyx Biosciences Inc                | Ventyx Biosciences Inc                                 | CUSIP: 92332V107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    978904 | NS      | $41113968.00  | 1.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Impinj Inc                            | Impinj Inc                                             | CUSIP: 453204109<br>LEI: 549300M26VGKSMMWWN17 | Long             | EC               | CORP              | US        |    411092 | NS      | $53351519.76  | 1.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Silk Road Medical Inc                 | Silk Road Medical Inc                                  | CUSIP: 82710M100<br>LEI: 549300VL8KC0ZPDQHE14 | Long             | EC               | CORP              | US        |    559989 | NS      | $30441002.04  | 1.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Driven Brands Holdings Inc            | Driven Brands Holdings Inc                             | CUSIP: 26210V102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    460774 | NS      | $13449993.06  | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Global-e Online Ltd                   | Global-e Online Ltd                                    | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | IL        |    660221 | NS      | $19786823.37  | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Natera Inc                            | Natera Inc                                             | CUSIP: 632307104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    455931 | NS      | $19573117.83  | 0.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Ameresco Inc                          | Ameresco Inc                                           | CUSIP: 02361E108<br>LEI: 529900NZXZGBCBXYY327 | Long             | EC               | CORP              | US        |    530673 | NS      | $34212488.31  | 1.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Matador Resources Co                  | Matador Resources Co                                   | CUSIP: 576485205<br>LEI: 549300CI3Q2UUK5R4G79 | Long             | EC               | CORP              | US        |    250570 | NS      | $16577711.20  | 0.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Jamf Holding Corp                     | Jamf Holding Corp                                      | CUSIP: 47074L105<br>LEI: 254900IHLXZU4Z5ANA12 | Long             | EC               | CORP              | US        |    313568 | NS      | $6230596.16   | 0.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Lantheus Holdings Inc                 | Lantheus Holdings Inc                                  | CUSIP: 516544103<br>LEI: 5299005HUB5IOJGO7S39 | Long             | EC               | CORP              | US        |    232392 | NS      | $13362540.00  | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Cytokinetics Inc                      | Cytokinetics Inc                                       | CUSIP: 23282W605<br>LEI: 549300BE5DY1HW7IHA64 | Long             | EC               | CORP              | US        |   1081549 | NS      | $45944201.52  | 1.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Sprout Social Inc                     | Sprout Social Inc                                      | CUSIP: 85209W109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    477111 | NS      | $30520790.67  | 1.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Summit Materials Inc                  | Summit Materials Inc                                   | CUSIP: 86614U100<br>LEI: 549300XNOLX5GIOSO108 | Long             | EC               | CORP              | US        |    632774 | NS      | $20792953.64  | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| indie Semiconductor Inc               | indie Semiconductor Inc                                | CUSIP: 45569U101<br>LEI: 254900L1MFXFYGB1PV53 | Long             | EC               | CORP              | US        |   3266409 | NS      | $26033279.73  | 0.96%             |  |  |  | No            |                  1 | On Loan: —       |
| Glaukos Corp                          | Glaukos Corp                                           | CUSIP: 377322102<br>LEI: 5299004JA1LHE21M6T14 | Long             | EC               | CORP              | US        |    469641 | NS      | $23035891.05  | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Clean Harbors Inc                     | Clean Harbors Inc                                      | CUSIP: 184496107<br>LEI: 5493000SJVZVZJKHJF48 | Long             | EC               | CORP              | US        |    379690 | NS      | $49473607.00  | 1.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Deckers Outdoor Corp                  | Deckers Outdoor Corp                                   | CUSIP: 243537107<br>LEI: 5493008LG4W3I6K8J118 | Long             | EC               | CORP              | US        |    102618 | NS      | $43867142.64  | 1.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Shoals Technologies Group Inc         | Shoals Technologies Group Inc                          | CUSIP: 82489W107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    784085 | NS      | $21868130.65  | 0.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Valmont Industries Inc                | Valmont Industries Inc                                 | CUSIP: 920253101<br>LEI: 5493009ZGZJJ8F77JN08 | Long             | EC               | CORP              | US        |    116486 | NS      | $38408928.78  | 1.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Celsius Holdings Inc                  | Celsius Holdings Inc                                   | CUSIP: 15118V207<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    225309 | NS      | $22602998.88  | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Lattice Semiconductor Corp            | Lattice Semiconductor Corp                             | CUSIP: 518415104<br>LEI: 549300LRBBPZDQ2II567 | Long             | EC               | CORP              | US        |    587348 | NS      | $44515104.92  | 1.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Tenable Holdings Inc                  | Tenable Holdings Inc                                   | CUSIP: 88025T102<br>LEI: 5493004S5OMPESF0EF83 | Long             | EC               | CORP              | US        |    354907 | NS      | $14277908.61  | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Clear Secure Inc                      | Clear Secure Inc                                       | CUSIP: 18467V109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   2101898 | NS      | $65978578.22  | 2.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Confluent Inc                         | Confluent Inc                                          | CUSIP: 20717M103<br>LEI: 254900MRZ83YWUV7SN74 | Long             | EC               | CORP              | US        |    815848 | NS      | $18846088.80  | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2023-02-23

**Name of Applicant:** LORD ABBETT DEVELOPING GROWTH FUND, INC.

**Signature:** Michael Hebert

**Name of Signer:** Michael Hebert

**Title:** Chief Financial Officer